ovo/src/ovo.cpp

/**
 * ovo Main File
 *
 * @category ovo
 * @package ovo.cpp
 * @copyright Copyright (c) 2019 EEENeko (https://github.com/eeeneko)
 * @license GNU General Public License 2.0
 * @version 0.0.2
 */

#include "ovo.h"

#include <cstdio>
#include <cstdlib>
#include <io.h>
#include <algorithm>



/****** Class info ******/

/**
 * Display version
 *
 * @access public
 */
string ovo::info::version = "Version 0.0.1";

/**
 * Display a welcome string
 *
 * @access public
 * @param void
 * @return void
 */
void ovo::info::detail() const
{
    cout << endl << "Lib Name: ovo" <<endl;
    cout << "Org: EEENeko (https://github.com/eeeNeko)" << endl;
    cout << "Author: Jianzhi Fan, Yimian Liu" << endl;
    cout << "license GNU General Public License 2.0" << endl;
    cout << "copyright Copyright (c) 2019 EEENeko" << endl << endl;
}



/****** Class file ******/

/**
 * Get All Files info with certain format
 *
 * @Author yimian
 * @access private
 * @param string path filePath
 * @param string format  #such as "*.jpg"
 * @param int isShowPath  #If this is 1, the path would display before every filename
 * @return void
 */
void ovo::file::get_all_files_info(string path, const string format)
{
    long hFile = 0;
    //File info struct
    struct _finddata_t fileInfo;
    class FileInfo t_file;
    string p;
#ifdef linux    
    const string sign = "/";
#else
    const string sign = "\\";
#endif
    //If the path end with '/'
    if(path[path.size()-1] == '/' || path[path.size()-1] == '\\') path.erase(path.end() - 1);
    //Deal with files
    if((hFile = _findfirst(p.assign(path).append(sign+format).c_str(),&fileInfo)) != -1){
        do
        {
            if(!(fileInfo.attrib & _A_SUBDIR)){
                t_file.path = p.assign(path).append(sign).append(fileInfo.name);
                t_file.name = p.assign(fileInfo.name);
                t_file.size = fileInfo.size;
                t_file.time_create = fileInfo.time_create;
                t_file.time_access = fileInfo.time_access;
                t_file.time_write = fileInfo.time_write;
                t_file.attrib = fileInfo.attrib;
                file.push_back(t_file);
            }

        }while(_findnext(hFile, &fileInfo) == 0);

        _findclose(hFile);
    }
}

/**
 * Get All Folders and subFolders
 *
 * @Author yimian
 * @access private
 * @param string path filePath
 * @param vector<string>& folders
 * @return void
 */
void ovo::file::get_all_folders_name(string path, vector<string>& folders)
{
    long hFile = 0;
    //File info struct
    struct _finddata_t fileInfo;
    string p;
#ifdef linux    
    const string sign = "/";
#else
    const string sign = "\\";
#endif
    //If the path end with '/'
    if(path[path.size()-1] == '/' || path[path.size()-1] == '\\') path.erase(path.end() - 1);
    //Deal with folders
    if((hFile = _findfirst(p.assign(path).append(sign+"*").c_str(),&fileInfo)) != -1){
        do
        {
            if((fileInfo.attrib & _A_SUBDIR)){
                if(strcmp(fileInfo.name,".") != 0 && strcmp(fileInfo.name,"..") != 0){
                    folders.push_back(p.assign(path).append(sign).append(fileInfo.name));
                    get_all_folders_name(p.assign(path).append(sign).append(fileInfo.name), folders);
                }
            }

        }while(_findnext(hFile, &fileInfo) == 0);

        _findclose(hFile);
    }
}

/**
 * Get files with certain format and settings
 *
 * @Author yimian
 * @access public
 * @param string path filePath
 * @param string format  #such as "*.jpg"
 * @param int isSearchSubfolders  ##If this is 1, will search all the sub folders
 * @param int isShowPath  #If this is 1, the path would display before every filename
 * @return void
 */
void ovo::file::get_files_info(const string path, const string format, const int isSearchSubfolders)
{

#ifdef linux    
    const string sign = "/";
#else
    const string sign = "\\";
#endif

    get_all_files_info(path, format);

    //Search Sub Folders
    if(isSearchSubfolders){
        vector<string> foldersPath;
        get_all_folders_name(path, foldersPath);

        for(int i = 0; i < foldersPath.size(); i++){

            get_all_files_info(foldersPath[i], format);
        }
    }

}

/* String class */


void ovo::String::split(const std::string& s, std::vector<std::string>& v, const std::string& c)
{
    std::string::size_type pos1, pos2;
    pos2 = s.find(c);
    pos1 = 0;
    while(std::string::npos != pos2){
        v.push_back(s.substr(pos1, pos2-pos1));
 
        pos1 = pos2 + c.size();
        pos2 = s.find(c, pos1);
    }
    if(pos1 != s.length()) v.push_back(s.substr(pos1));
}


/****** Class math ******/

/*** md5 ***/

/**
 * @From file md5.h
 * @author Jiewei Wei
 * @mail weijieweijerry@163.com
 * @github https://github.com/JieweiWei
 * @data Oct 19 2014
 */
/* Define the static member of md5. */
const byte ovo::math::MD5::PADDING[64] = { 0x80 };
const char ovo::math::MD5::HEX_NUMBERS[16] = {
    '0', '1', '2', '3',
    '4', '5', '6', '7',
    '8', '9', 'a', 'b',
    'c', 'd', 'e', 'f'
};

/**
 * @Construct a md5 object with a string.
 *
 * @param {message} the message will be transformed.
 *
 */
ovo::math::MD5::MD5(const string& message)
{
    finished = false;
    /* Reset number of bits. */
    count[0] = count[1] = 0;
    /* Initialization constants. */
    state[0] = 0x67452301;
    state[1] = 0xefcdab89;
    state[2] = 0x98badcfe;
    state[3] = 0x10325476;

    /* Initialization the object according to message. */
    init((const byte*)message.c_str(), message.length());
}

/**
 * @Generate md5 digest.
 *
 * @return the message-digest.
 *
 */
const byte* ovo::math::MD5::getDigest()
{
    if (!finished) {
        finished = true;

        byte bits[8];
        bit32 oldState[4];
        bit32 oldCount[2];
        bit32 index, padLen;

        /* Save current state and count. */
        memcpy(oldState, state, 16);
        memcpy(oldCount, count, 8);

        /* Save number of bits */
        encode(count, bits, 8);

        /* Pad out to 56 mod 64. */
        index = (bit32)((count[0] >> 3) & 0x3f);
        padLen = (index < 56) ? (56 - index) : (120 - index);
        init(PADDING, padLen);

        /* Append length (before padding) */
        init(bits, 8);

        /* Store state in digest */
        encode(state, digest, 16);

        /* Restore current state and count. */
        memcpy(state, oldState, 16);
        memcpy(count, oldCount, 8);
    }
    return digest;
}

/**
 * @Initialization the md5 object, processing another message block,
 * and updating the context.
 *
 * @param {input} the input message.
 *
 * @param {len} the number btye of message.
 *
 */
void ovo::math::MD5::init(const byte* input, size_t len)
{
    bit32 i, index, partLen;

    finished = false;

    /* Compute number of bytes mod 64 */
    index = (bit32)((count[0] >> 3) & 0x3f);

    /* update number of bits */
    if ((count[0] += ((bit32)len << 3)) < ((bit32)len << 3)) {
        ++count[1];
    }
    count[1] += ((bit32)len >> 29);

    partLen = 64 - index;

      /* transform as many times as possible. */
      if (len >= partLen) {
        memcpy(&buffer[index], input, partLen);
        transform(buffer);

        for (i = partLen; i + 63 < len; i += 64) {

            transform(&input[i]);
        }
        index = 0;
    } else {
        i = 0;
    }

    /* Buffer remaining input */
    memcpy(&buffer[index], &input[i], len - i);
}

/**
 * @md5 basic transformation. Transforms state based on block.
 *
 * @param {block} the message block.
 */
void ovo::math::MD5::transform(const byte block[64])
{
    bit32 a = state[0], b = state[1], c = state[2], d = state[3], x[16];

    decode(block, x, 64);

    /* Round 1 */
    FF (a, b, c, d, x[ 0], s11, 0xd76aa478);
    FF (d, a, b, c, x[ 1], s12, 0xe8c7b756);
    FF (c, d, a, b, x[ 2], s13, 0x242070db);
    FF (b, c, d, a, x[ 3], s14, 0xc1bdceee);
    FF (a, b, c, d, x[ 4], s11, 0xf57c0faf);
    FF (d, a, b, c, x[ 5], s12, 0x4787c62a);
    FF (c, d, a, b, x[ 6], s13, 0xa8304613);
    FF (b, c, d, a, x[ 7], s14, 0xfd469501);
    FF (a, b, c, d, x[ 8], s11, 0x698098d8);
    FF (d, a, b, c, x[ 9], s12, 0x8b44f7af);
    FF (c, d, a, b, x[10], s13, 0xffff5bb1);
    FF (b, c, d, a, x[11], s14, 0x895cd7be);
    FF (a, b, c, d, x[12], s11, 0x6b901122);
    FF (d, a, b, c, x[13], s12, 0xfd987193);
    FF (c, d, a, b, x[14], s13, 0xa679438e);
    FF (b, c, d, a, x[15], s14, 0x49b40821);

    /* Round 2 */
    GG (a, b, c, d, x[ 1], s21, 0xf61e2562);
    GG (d, a, b, c, x[ 6], s22, 0xc040b340);
    GG (c, d, a, b, x[11], s23, 0x265e5a51);
    GG (b, c, d, a, x[ 0], s24, 0xe9b6c7aa);
    GG (a, b, c, d, x[ 5], s21, 0xd62f105d);
    GG (d, a, b, c, x[10], s22,  0x2441453);
    GG (c, d, a, b, x[15], s23, 0xd8a1e681);
    GG (b, c, d, a, x[ 4], s24, 0xe7d3fbc8);
    GG (a, b, c, d, x[ 9], s21, 0x21e1cde6);
    GG (d, a, b, c, x[14], s22, 0xc33707d6);
    GG (c, d, a, b, x[ 3], s23, 0xf4d50d87);
    GG (b, c, d, a, x[ 8], s24, 0x455a14ed);
    GG (a, b, c, d, x[13], s21, 0xa9e3e905);
    GG (d, a, b, c, x[ 2], s22, 0xfcefa3f8);
    GG (c, d, a, b, x[ 7], s23, 0x676f02d9);
    GG (b, c, d, a, x[12], s24, 0x8d2a4c8a);

    /* Round 3 */
    HH (a, b, c, d, x[ 5], s31, 0xfffa3942);
    HH (d, a, b, c, x[ 8], s32, 0x8771f681);
    HH (c, d, a, b, x[11], s33, 0x6d9d6122);
    HH (b, c, d, a, x[14], s34, 0xfde5380c);
    HH (a, b, c, d, x[ 1], s31, 0xa4beea44);
    HH (d, a, b, c, x[ 4], s32, 0x4bdecfa9);
    HH (c, d, a, b, x[ 7], s33, 0xf6bb4b60);
    HH (b, c, d, a, x[10], s34, 0xbebfbc70);
    HH (a, b, c, d, x[13], s31, 0x289b7ec6);
    HH (d, a, b, c, x[ 0], s32, 0xeaa127fa);
    HH (c, d, a, b, x[ 3], s33, 0xd4ef3085);
    HH (b, c, d, a, x[ 6], s34,  0x4881d05);
    HH (a, b, c, d, x[ 9], s31, 0xd9d4d039);
    HH (d, a, b, c, x[12], s32, 0xe6db99e5);
    HH (c, d, a, b, x[15], s33, 0x1fa27cf8);
    HH (b, c, d, a, x[ 2], s34, 0xc4ac5665);

    /* Round 4 */
    II (a, b, c, d, x[ 0], s41, 0xf4292244);
    II (d, a, b, c, x[ 7], s42, 0x432aff97);
    II (c, d, a, b, x[14], s43, 0xab9423a7);
    II (b, c, d, a, x[ 5], s44, 0xfc93a039);
    II (a, b, c, d, x[12], s41, 0x655b59c3);
    II (d, a, b, c, x[ 3], s42, 0x8f0ccc92);
    II (c, d, a, b, x[10], s43, 0xffeff47d);
    II (b, c, d, a, x[ 1], s44, 0x85845dd1);
    II (a, b, c, d, x[ 8], s41, 0x6fa87e4f);
    II (d, a, b, c, x[15], s42, 0xfe2ce6e0);
    II (c, d, a, b, x[ 6], s43, 0xa3014314);
    II (b, c, d, a, x[13], s44, 0x4e0811a1);
    II (a, b, c, d, x[ 4], s41, 0xf7537e82);
    II (d, a, b, c, x[11], s42, 0xbd3af235);
    II (c, d, a, b, x[ 2], s43, 0x2ad7d2bb);
    II (b, c, d, a, x[ 9], s44, 0xeb86d391);

    state[0] += a;
    state[1] += b;
    state[2] += c;
    state[3] += d;
}

/**
* @Encodes input (unsigned long) into output (byte).
*
* @param {input} usigned long.
*
* @param {output} byte.
*
* @param {length} the length of input.
*
*/
void ovo::math::MD5::encode(const bit32* input, byte* output, size_t length)
{
    for (size_t i = 0, j = 0; j < length; ++i, j += 4) {

        output[j]= (byte)(input[i] & 0xff);
        output[j + 1] = (byte)((input[i] >> 8) & 0xff);
        output[j + 2] = (byte)((input[i] >> 16) & 0xff);
        output[j + 3] = (byte)((input[i] >> 24) & 0xff);
    }
}

/**
 * @Decodes input (byte) into output (usigned long).
 *
 * @param {input} bytes.
 *
 * @param {output} unsigned long.
 *
 * @param {length} the length of input.
 *
 */
void ovo::math::MD5::decode(const byte* input, bit32* output, size_t length)
{
    for (size_t i = 0, j = 0; j < length; ++i, j += 4) {

        output[i] = ((bit32)input[j]) | (((bit32)input[j + 1]) << 8) |
        (((bit32)input[j + 2]) << 16) | (((bit32)input[j + 3]) << 24);
    }
}


/**
 * @Convert digest to string value.
 *
 * @return the hex string of digest.
 *
 */
string ovo::math::MD5::toStr(const int length)
{
    const byte* digest_ = getDigest();
    string str;
    str.reserve(16 << 1);
    for (size_t i = 0; i < 16; ++i) {

        int t = digest_[i];
        int a = t / 16;
        int b = t % 16;
        str.append(1, HEX_NUMBERS[a]);
        str.append(1, HEX_NUMBERS[b]);
    }
    return str.substr(0, (length > 0 && length < 33) ? length : 32);
}


/*** base64 ***/

/**
 * 
 * @From file base64.h
 * @author ReneNyffenegger
 * @mail rene.nyffenegger@adp-gmbh.ch
 * @github https://github.com/ReneNyffenegger
 * 
 */
const string ovo::math::base64_chars = 
             "ABCDEFGHIJKLMNOPQRSTUVWXYZ"
             "abcdefghijklmnopqrstuvwxyz"
             "0123456789+/";

string ovo::math::base64_encode(const string fromStr)
{
    char const* bytes_to_encode = fromStr.c_str();
    unsigned int in_len = fromStr.length();
    string ret;
    int i = 0;
    int j = 0;
    unsigned char char_array_3[3];
    unsigned char char_array_4[4];

    while(in_len--) {

        char_array_3[i++] = *(bytes_to_encode++);
        if(i == 3) {
        char_array_4[0] = (char_array_3[0] & 0xfc) >> 2;
        char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
        char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);
        char_array_4[3] = char_array_3[2] & 0x3f;

        for(i = 0; (i <4) ; i++)

            ret += base64_chars[char_array_4[i]];
            i = 0;
        }
    }

    if(i) {
        for(j = i; j < 3; j++)
            char_array_3[j] = '\0';

        char_array_4[0] = ( char_array_3[0] & 0xfc) >> 2;
        char_array_4[1] = ((char_array_3[0] & 0x03) << 4) + ((char_array_3[1] & 0xf0) >> 4);
        char_array_4[2] = ((char_array_3[1] & 0x0f) << 2) + ((char_array_3[2] & 0xc0) >> 6);

        for (j = 0; (j < i + 1); j++)
            ret += base64_chars[char_array_4[j]];

        while((i++ < 3))
            ret += '=';
    }

    return ret;
}

string ovo::math::base64_decode(string const& encoded_string)
{
    int in_len = encoded_string.size();
    int i = 0;
    int j = 0;
    int in_ = 0;
    unsigned char char_array_4[4], char_array_3[3];
    string ret;

    while(in_len-- && ( encoded_string[in_] != '=') && is_base64(encoded_string[in_])) {

        char_array_4[i++] = encoded_string[in_]; in_++;
        if(i ==4) {
        for (i = 0; i <4; i++)
        char_array_4[i] = base64_chars.find(char_array_4[i]);

        char_array_3[0] = ( char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
        char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);
        char_array_3[2] = ((char_array_4[2] & 0x3) << 6) +   char_array_4[3];

        for(i = 0; (i < 3); i++)
            ret += char_array_3[i];
        i = 0;
        }
    }

    if(i) {
        for(j = 0; j < i; j++)
            char_array_4[j] = base64_chars.find(char_array_4[j]);

        char_array_3[0] = (char_array_4[0] << 2) + ((char_array_4[1] & 0x30) >> 4);
        char_array_3[1] = ((char_array_4[1] & 0xf) << 4) + ((char_array_4[2] & 0x3c) >> 2);

        for (j = 0; (j < i - 1); j++) ret += char_array_3[j];
    }
    
    return ret;
}




/*** sha256 ***/

/**
 * 
 * @From file sha256.h
 * @author Louis Nam
 * @github https://github.com/Encoloniel
 * 
 */

const unsigned int ovo::math::SHA256::sha256_k[64] = //UL = uint32
{0x428a2f98, 0x71374491, 0xb5c0fbcf, 0xe9b5dba5,
    0x3956c25b, 0x59f111f1, 0x923f82a4, 0xab1c5ed5,
    0xd807aa98, 0x12835b01, 0x243185be, 0x550c7dc3,
    0x72be5d74, 0x80deb1fe, 0x9bdc06a7, 0xc19bf174,
    0xe49b69c1, 0xefbe4786, 0x0fc19dc6, 0x240ca1cc,
    0x2de92c6f, 0x4a7484aa, 0x5cb0a9dc, 0x76f988da,
    0x983e5152, 0xa831c66d, 0xb00327c8, 0xbf597fc7,
    0xc6e00bf3, 0xd5a79147, 0x06ca6351, 0x14292967,
    0x27b70a85, 0x2e1b2138, 0x4d2c6dfc, 0x53380d13,
    0x650a7354, 0x766a0abb, 0x81c2c92e, 0x92722c85,
    0xa2bfe8a1, 0xa81a664b, 0xc24b8b70, 0xc76c51a3,
    0xd192e819, 0xd6990624, 0xf40e3585, 0x106aa070,
    0x19a4c116, 0x1e376c08, 0x2748774c, 0x34b0bcb5,
    0x391c0cb3, 0x4ed8aa4a, 0x5b9cca4f, 0x682e6ff3,
    0x748f82ee, 0x78a5636f, 0x84c87814, 0x8cc70208,
    0x90befffa, 0xa4506ceb, 0xbef9a3f7, 0xc67178f2};

void ovo::math::SHA256::transform(const unsigned char *message, unsigned int block_nb)
{
    uint32 w[64];
    uint32 wv[8];
    uint32 t1, t2;
    const unsigned char *sub_block;
    int i;
    int j;
    for (i = 0; i < (int) block_nb; i++) {
        sub_block = message + (i << 6);
        for (j = 0; j < 16; j++) {
            SHA2_PACK32(&sub_block[j << 2], &w[j]);
        }
        for (j = 16; j < 64; j++) {
            w[j] =  SHA256_F4(w[j -  2]) + w[j -  7] + SHA256_F3(w[j - 15]) + w[j - 16];
        }
        for (j = 0; j < 8; j++) {
            wv[j] = m_h[j];
        }
        for (j = 0; j < 64; j++) {
            t1 = wv[7] + SHA256_F2(wv[4]) + SHA2_CH(wv[4], wv[5], wv[6])
            + sha256_k[j] + w[j];
            t2 = SHA256_F1(wv[0]) + SHA2_MAJ(wv[0], wv[1], wv[2]);
            wv[7] = wv[6];
            wv[6] = wv[5];
            wv[5] = wv[4];
            wv[4] = wv[3] + t1;
            wv[3] = wv[2];
            wv[2] = wv[1];
            wv[1] = wv[0];
            wv[0] = t1 + t2;
        }
        for (j = 0; j < 8; j++) {
            m_h[j] += wv[j];
        }
    }
}

void ovo::math::SHA256::init()
{
    m_h[0] = 0x6a09e667;
    m_h[1] = 0xbb67ae85;
    m_h[2] = 0x3c6ef372;
    m_h[3] = 0xa54ff53a;
    m_h[4] = 0x510e527f;
    m_h[5] = 0x9b05688c;
    m_h[6] = 0x1f83d9ab;
    m_h[7] = 0x5be0cd19;
    m_len = 0;
    m_tot_len = 0;
}

void ovo::math::SHA256::update(const unsigned char *message, unsigned int len)
{
    unsigned int block_nb;
    unsigned int new_len, rem_len, tmp_len;
    const unsigned char *shifted_message;
    tmp_len = SHA224_256_BLOCK_SIZE - m_len;
    rem_len = len < tmp_len ? len : tmp_len;
    memcpy(&m_block[m_len], message, rem_len);
    if (m_len + len < SHA224_256_BLOCK_SIZE) {
        m_len += len;
        return;
    }
    new_len = len - rem_len;
    block_nb = new_len / SHA224_256_BLOCK_SIZE;
    shifted_message = message + rem_len;
    transform(m_block, 1);
    transform(shifted_message, block_nb);
    rem_len = new_len % SHA224_256_BLOCK_SIZE;
    memcpy(m_block, &shifted_message[block_nb << 6], rem_len);
    m_len = rem_len;
    m_tot_len += (block_nb + 1) << 6;
}

void ovo::math::SHA256::final(unsigned char *digest)
{
    unsigned int block_nb;
    unsigned int pm_len;
    unsigned int len_b;
    int i;
    block_nb = (1 + ((SHA224_256_BLOCK_SIZE - 9)
                     < (m_len % SHA224_256_BLOCK_SIZE)));
    len_b = (m_tot_len + m_len) << 3;
    pm_len = block_nb << 6;
    memset(m_block + m_len, 0, pm_len - m_len);
    m_block[m_len] = 0x80;
    SHA2_UNPACK32(len_b, m_block + pm_len - 4);
    transform(m_block, block_nb);
    for (i = 0 ; i < 8; i++) {
        SHA2_UNPACK32(m_h[i], &digest[i << 2]);
    }
}

string ovo::math::sha256(string input)
{
    unsigned char digest[ovo::math::SHA256::DIGEST_SIZE];
    memset(digest,0,ovo::math::SHA256::DIGEST_SIZE);
    
    SHA256 ctx = SHA256();
    ctx.init();
    ctx.update( (unsigned char*)input.c_str(), input.length());
    ctx.final(digest);
    
    char buf[2*ovo::math::SHA256::DIGEST_SIZE+1];
    buf[2*ovo::math::SHA256::DIGEST_SIZE] = 0;
    for (int i = 0; i < ovo::math::SHA256::DIGEST_SIZE; i++)
        sprintf(buf+i*2, "%02x", digest[i]);
    return string(buf);
}


/****** AES *******/

std::string ovo::math::aes_encode(std::string strSrc)
{
    if(_aes_key == "" || _aes_iv == "") throw "AES encode without initialization!!";
    strSrc = this->base64_encode(strSrc);
    size_t length = strSrc.length();
    int block_num = length / BLOCK_SIZE + 1;

    //明文
    char* szDataIn = new char[block_num * BLOCK_SIZE + 1];
    memset(szDataIn, 0x00, block_num * BLOCK_SIZE + 1);
    strcpy(szDataIn, strSrc.c_str());

    //进行PKCS7Padding填充。
    int k = length % BLOCK_SIZE;
    int j = length / BLOCK_SIZE;
    int padding = BLOCK_SIZE - k;
    for (int i = 0; i < padding; i++)
    {
        szDataIn[j * BLOCK_SIZE + k + i] = padding;
    }
    szDataIn[block_num * BLOCK_SIZE] = '\0';

    //加密后的密文
    char *szDataOut = new char[block_num * BLOCK_SIZE + 1];
    memset(szDataOut, 0, block_num * BLOCK_SIZE + 1);

    //进行进行AES的CBC模式加密
    AES aes;
    aes.MakeKey(_aes_key.c_str(), _aes_iv.c_str(), 16, 16);
    aes.Encrypt(szDataIn, szDataOut, block_num * BLOCK_SIZE, AES::CBC);
    string str = this->base64_encode((string)szDataOut);
    delete[] szDataIn;
    delete[] szDataOut;
    return str;
}

std::string ovo::math::aes_decode(const std::string& strSrc)
{
    if(_aes_key == "" || _aes_iv == "") throw "AES decode without initialization!!";
    std::string strData = this->base64_decode(strSrc);
    size_t length = strData.length();
    //密文
    char *szDataIn = new char[length + 1];
    memcpy(szDataIn, strData.c_str(), length+1);
    //明文
    char *szDataOut = new char[length + 1];
    memcpy(szDataOut, strData.c_str(), length+1);

    //进行AES的CBC模式解密
    AES aes;
    aes.MakeKey(_aes_key.c_str(), _aes_iv.c_str(), 16, 16);
    aes.Decrypt(szDataIn, szDataOut, length, AES::CBC);

    //去PKCS7Padding填充
    if (0x00 < szDataOut[length - 1] <= 0x16)
    {
        int tmp = szDataOut[length - 1];
        for (int i = length - 1; i >= length - tmp; i--)
        {
            if (szDataOut[i] != tmp)
            {
            memset(szDataOut, 0, length);
            cout << "AES Decode Failture!!" << endl;
            break;
            }
            else
            szDataOut[i] = 0;
        }
    }
    std::string strDest(szDataOut);
    delete[] szDataIn;
    delete[] szDataOut;
    return this->base64_decode(strDest);
}


/**
 * 
 * @From file AES.cpp
 * @author witto_sdy
 * @web https://blog.csdn.net/witto_sdy/article/details/83375999
 * 
 */

const int sm_alog[256] =
{ 1, 3, 5, 15, 17, 51, 85, 255, 26, 46, 114, 150, 161, 248, 19, 53, 95, 225, 56,
    72, 216, 115, 149, 164, 247, 2, 6, 10, 30, 34, 102, 170, 229, 52, 92,
    228, 55, 89, 235, 38, 106, 190, 217, 112, 144, 171, 230, 49, 83, 245, 4,
    12, 20, 60, 68, 204, 79, 209, 104, 184, 211, 110, 178, 205, 76, 212,
    103, 169, 224, 59, 77, 215, 98, 166, 241, 8, 24, 40, 120, 136, 131, 158,
    185, 208, 107, 189, 220, 127, 129, 152, 179, 206, 73, 219, 118, 154,
    181, 196, 87, 249, 16, 48, 80, 240, 11, 29, 39, 105, 187, 214, 97, 163,
    254, 25, 43, 125, 135, 146, 173, 236, 47, 113, 147, 174, 233, 32, 96,
    160, 251, 22, 58, 78, 210, 109, 183, 194, 93, 231, 50, 86, 250, 21, 63,
    65, 195, 94, 226, 61, 71, 201, 64, 192, 91, 237, 44, 116, 156, 191, 218,
    117, 159, 186, 213, 100, 172, 239, 42, 126, 130, 157, 188, 223, 122,
    142, 137, 128, 155, 182, 193, 88, 232, 35, 101, 175, 234, 37, 111, 177,
    200, 67, 197, 84, 252, 31, 33, 99, 165, 244, 7, 9, 27, 45, 119, 153,
    176, 203, 70, 202, 69, 207, 74, 222, 121, 139, 134, 145, 168, 227, 62,
    66, 198, 81, 243, 14, 18, 54, 90, 238, 41, 123, 141, 140, 143, 138, 133,
    148, 167, 242, 13, 23, 57, 75, 221, 124, 132, 151, 162, 253, 28, 36,
    108, 180, 199, 82, 246, 1 };

const int sm_log[256] =
{ 0, 0, 25, 1, 50, 2, 26, 198, 75, 199, 27, 104, 51, 238, 223, 3, 100, 4, 224,
    14, 52, 141, 129, 239, 76, 113, 8, 200, 248, 105, 28, 193, 125, 194, 29,
    181, 249, 185, 39, 106, 77, 228, 166, 114, 154, 201, 9, 120, 101, 47,
    138, 5, 33, 15, 225, 36, 18, 240, 130, 69, 53, 147, 218, 142, 150, 143,
    219, 189, 54, 208, 206, 148, 19, 92, 210, 241, 64, 70, 131, 56, 102,
    221, 253, 48, 191, 6, 139, 98, 179, 37, 226, 152, 34, 136, 145, 16, 126,
    110, 72, 195, 163, 182, 30, 66, 58, 107, 40, 84, 250, 133, 61, 186, 43,
    121, 10, 21, 155, 159, 94, 202, 78, 212, 172, 229, 243, 115, 167, 87,
    175, 88, 168, 80, 244, 234, 214, 116, 79, 174, 233, 213, 231, 230, 173,
    232, 44, 215, 117, 122, 235, 22, 11, 245, 89, 203, 95, 176, 156, 169,
    81, 160, 127, 12, 246, 111, 23, 196, 73, 236, 216, 67, 31, 45, 164, 118,
    123, 183, 204, 187, 62, 90, 251, 96, 177, 134, 59, 82, 161, 108, 170,
    85, 41, 157, 151, 178, 135, 144, 97, 190, 220, 252, 188, 149, 207, 205,
    55, 63, 91, 209, 83, 57, 132, 60, 65, 162, 109, 71, 20, 42, 158, 93, 86,
    242, 211, 171, 68, 17, 146, 217, 35, 32, 46, 137, 180, 124, 184, 38,
    119, 153, 227, 165, 103, 74, 237, 222, 197, 49, 254, 24, 13, 99, 140,
    128, 192, 247, 112, 7 };

const char sm_S[256] =
{ 99, 124, 119, 123, -14, 107, 111, -59, 48, 1, 103, 43, -2, -41, -85, 118, -54,
    -126, -55, 125, -6, 89, 71, -16, -83, -44, -94, -81, -100, -92, 114,
    -64, -73, -3, -109, 38, 54, 63, -9, -52, 52, -91, -27, -15, 113, -40,
    49, 21, 4, -57, 35, -61, 24, -106, 5, -102, 7, 18, -128, -30, -21, 39,
    -78, 117, 9, -125, 44, 26, 27, 110, 90, -96, 82, 59, -42, -77, 41, -29,
    47, -124, 83, -47, 0, -19, 32, -4, -79, 91, 106, -53, -66, 57, 74, 76,
    88, -49, -48, -17, -86, -5, 67, 77, 51, -123, 69, -7, 2, 127, 80, 60,
    -97, -88, 81, -93, 64, -113, -110, -99, 56, -11, -68, -74, -38, 33, 16,
    -1, -13, -46, -51, 12, 19, -20, 95, -105, 68, 23, -60, -89, 126, 61,
    100, 93, 25, 115, 96, -127, 79, -36, 34, 42, -112, -120, 70, -18, -72,
    20, -34, 94, 11, -37, -32, 50, 58, 10, 73, 6, 36, 92, -62, -45, -84, 98,
    -111, -107, -28, 121, -25, -56, 55, 109, -115, -43, 78, -87, 108, 86,
    -12, -22, 101, 122, -82, 8, -70, 120, 37, 46, 28, -90, -76, -58, -24,
    -35, 116, 31, 75, -67, -117, -118, 112, 62, -75, 102, 72, 3, -10, 14,
    97, 53, 87, -71, -122, -63, 29, -98, -31, -8, -104, 17, 105, -39, -114,
    -108, -101, 30, -121, -23, -50, 85, 40, -33, -116, -95, -119, 13, -65,
    -26, 66, 104, 65, -103, 45, 15, -80, 84, -69, 22 };

const char sm_Si[256] =
{ 82, 9, 106, -43, 48, 54, -91, 56, -65, 64, -93, -98, -127, -13, -41, -5, 124,
    -29, 57, -126, -101, 47, -1, -121, 52, -114, 67, 68, -60, -34, -23, -53,
    84, 123, -108, 50, -90, -62, 35, 61, -18, 76, -107, 11, 66, -6, -61, 78,
    8, 46, -95, 102, 40, -39, 36, -78, 118, 91, -94, 73, 109, -117, -47, 37,
    114, -8, -10, 100, -122, 104, -104, 22, -44, -92, 92, -52, 93, 101, -74,
    -110, 108, 112, 72, 80, -3, -19, -71, -38, 94, 21, 70, 87, -89, -115,
    -99, -124, -112, -40, -85, 0, -116, -68, -45, 10, -9, -28, 88, 5, -72,
    -77, 69, 6, -48, 44, 30, -113, -54, 63, 15, 2, -63, -81, -67, 3, 1, 19,
    -118, 107, 58, -111, 17, 65, 79, 103, -36, -22, -105, -14, -49, -50,
    -16, -76, -26, 115, -106, -84, 116, 34, -25, -83, 53, -123, -30, -7, 55,
    -24, 28, 117, -33, 110, 71, -15, 26, 113, 29, 41, -59, -119, 111, -73,
    98, 14, -86, 24, -66, 27, -4, 86, 62, 75, -58, -46, 121, 32, -102, -37,
    -64, -2, 120, -51, 90, -12, 31, -35, -88, 51, -120, 7, -57, 49, -79, 18,
    16, 89, 39, -128, -20, 95, 96, 81, 127, -87, 25, -75, 74, 13, 45, -27,
    122, -97, -109, -55, -100, -17, -96, -32, 59, 77, -82, 42, -11, -80,
    -56, -21, -69, 60, -125, 83, -103, 97, 23, 43, 4, 126, -70, 119, -42,
    38, -31, 105, 20, 99, 85, 33, 12, 125 };

const int sm_T1[256] =
{ -966564955, -126059388, -294160487, -159679603, -855539, -697603139,
    -563122255, -1849309868, 1613770832, 33620227, -832084055, 1445669757,
    -402719207, -1244145822, 1303096294, -327780710, -1882535355, 528646813,
    -1983264448, -92439161, -268764651, -1302767125, -1907931191, -68095989,
    1101901292, -1277897625, 1604494077, 1169141738, 597466303, 1403299063,
    -462261610, -1681866661, 1974974402, -503448292, 1033081774, 1277568618,
    1815492186, 2118074177, -168298750, -2083730353, 1748251740, 1369810420,
    -773462732, -101584632, -495881837, -1411852173, 1647391059, 706024767,
    134480908, -1782069422, 1176707941, -1648114850, 806885416, 932615841,
    168101135, 798661301, 235341577, 605164086, 461406363, -538779075,
    -840176858, 1311188841, 2142417613, -361400929, 302582043, 495158174,
    1479289972, 874125870, 907746093, -596742478, -1269146898, 1537253627,
    -1538108682, 1983593293, -1210657183, 2108928974, 1378429307,
    -572267714, 1580150641, 327451799, -1504488459, -1177431704, 0,
    -1041371860, 1075847264, -469959649, 2041688520, -1235526675,
    -731223362, -1916023994, 1740553945, 1916352843, -1807070498,
    -1739830060, -1336387352, -2049978550, -1143943061, -974131414,
    1336584933, -302253290, -2042412091, -1706209833, 1714631509, 293963156,
    -1975171633, -369493744, 67240454, -25198719, -1605349136, 2017213508,
    631218106, 1269344483, -1571728909, 1571005438, -2143272768, 93294474,
    1066570413, 563977660, 1882732616, -235539196, 1673313503, 2008463041,
    -1344611723, 1109467491, 537923632, -436207846, -34344178, -1076702611,
    -2117218996, 403442708, 638784309, -1007883217, -1101045791, 899127202,
    -2008791860, 773265209, -1815821225, 1437050866, -58818942, 2050833735,
    -932944724, -1168286233, 840505643, -428641387, -1067425632, 427917720,
    -1638969391, -1545806721, 1143087718, 1412049534, 999329963, 193497219,
    -1941551414, -940642775, 1807268051, 672404540, -1478566279,
    -1134666014, 369822493, -1378100362, -606019525, 1681011286, 1949973070,
    336202270, -1840690725, 201721354, 1210328172, -1201906460, -1614626211,
    -1110191250, 1135389935, -1000185178, 965841320, 831886756, -739974089,
    -226920053, -706222286, -1949775805, 1849112409, -630362697, 26054028,
    -1311386268, -1672589614, 1235855840, -663982924, -1403627782,
    -202050553, -806688219, -899324497, -193299826, 1202630377, 268961816,
    1874508501, -260540280, 1243948399, 1546530418, 941366308, 1470539505,
    1941222599, -1748580783, -873928669, -1579295364, -395021156,
    1042226977, -1773450275, 1639824860, 227249030, 260737669, -529502064,
    2084453954, 1907733956, -865704278, -1874310952, 100860677, -134810111,
    470683154, -1033805405, 1781871967, -1370007559, 1773779408, 394692241,
    -1715355304, 974986535, 664706745, -639508168, -336005101, 731420851,
    571543859, -764843589, -1445340816, 126783113, 865375399, 765172662,
    1008606754, 361203602, -907417312, -2016489911, -1437248001, 1344809080,
    -1512054918, 59542671, 1503764984, 160008576, 437062935, 1707065306,
    -672733647, -2076032314, -798463816, -2109652541, 697932208, 1512910199,
    504303377, 2075177163, -1470868228, 1841019862, 739644986 };

const int sm_T2[256] =
{ -1513725085, -2064089988, -1712425097, -1913226373, 234877682, -1110021269,
    -1310822545, 1418839493, 1348481072, 50462977, -1446090905, 2102799147,
    434634494, 1656084439, -431117397, -1695779210, 1167051466, -1658879358,
    1082771913, -2013627011, 368048890, -340633255, -913422521, 201060592,
    -331240019, 1739838676, -44064094, -364531793, -1088185188, -145513308,
    -1763413390, 1536934080, -1032472649, 484572669, -1371696237,
    1783375398, 1517041206, 1098792767, 49674231, 1334037708, 1550332980,
    -195975771, 886171109, 150598129, -1813876367, 1940642008, 1398944049,
    1059722517, 201851908, 1385547719, 1699095331, 1587397571, 674240536,
    -1590192490, 252314885, -1255171430, 151914247, 908333586, -1692696448,
    1038082786, 651029483, 1766729511, -847269198, -1612024459, 454166793,
    -1642232957, 1951935532, 775166490, 758520603, -1294176658, -290170278,
    -77881184, -157003182, 1299594043, 1639438038, -830622797, 2068982057,
    1054729187, 1901997871, -1760328572, -173649069, 1757008337, 0,
    750906861, 1614815264, 535035132, -931548751, -306816165, -1093375382,
    1183697867, -647512386, 1265776953, -560706998, -728216500, -391096232,
    1250283471, 1807470800, 717615087, -447763798, 384695291, -981056701,
    -677753523, 1432761139, -1810791035, -813021883, 283769337, 100925954,
    -2114027649, -257929136, 1148730428, -1171939425, -481580888,
    -207466159, -27417693, -1065336768, -1979347057, -1388342638,
    -1138647651, 1215313976, 82966005, -547111748, -1049119050, 1974459098,
    1665278241, 807407632, 451280895, 251524083, 1841287890, 1283575245,
    337120268, 891687699, 801369324, -507617441, -1573546089, -863484860,
    959321879, 1469301956, -229267545, -2097381762, 1199193405, -1396153244,
    -407216803, 724703513, -1780059277, -1598005152, -1743158911,
    -778154161, 2141445340, 1715741218, 2119445034, -1422159728,
    -2096396152, -896776634, 700968686, -747915080, 1009259540, 2041044702,
    -490971554, 487983883, 1991105499, 1004265696, 1449407026, 1316239930,
    504629770, -611169975, 168560134, 1816667172, -457679780, 1570751170,
    1857934291, -280777556, -1497079198, -1472622191, -1540254315,
    936633572, -1947043463, 852879335, 1133234376, 1500395319, -1210421907,
    -1946055283, 1689376213, -761508274, -532043351, -1260884884, -89369002,
    133428468, 634383082, -1345690267, -1896580486, -381178194, 403703816,
    -714097990, -1997506440, 1867130149, 1918643758, 607656988, -245913946,
    -948718412, 1368901318, 600565992, 2090982877, -1662487436, 557719327,
    -577352885, -597574211, -2045932661, -2062579062, -1864339344,
    1115438654, -999180875, -1429445018, -661632952, 84280067, 33027830,
    303828494, -1547542175, 1600795957, -106014889, -798377543, -1860729210,
    1486471617, 658119965, -1188585826, 953803233, 334231800, -1288988520,
    857870609, -1143838359, 1890179545, -1995993458, -1489791852,
    -1238525029, 574365214, -1844082809, 550103529, 1233637070, -5614251,
    2018519080, 2057691103, -1895592820, -128343647, -2146858615, 387583245,
    -630865985, 836232934, -964410814, -1194301336, -1014873791,
    -1339450983, 2002398509, 287182607, -881086288, -56077228, -697451589,
    975967766 };

const int sm_T3[256] =
{ 1671808611, 2089089148, 2006576759, 2072901243, -233963534, 1807603307,
    1873927791, -984313403, 810573872, 16974337, 1739181671, 729634347,
    -31856642, -681396777, -1410970197, 1989864566, -901410870, -2103631998,
    -918517303, 2106063485, -99225606, 1508618841, 1204391495, -267650064,
    -1377025619, -731401260, -1560453214, -1343601233, -1665195108,
    -1527295068, 1922491506, -1067738176, -1211992649, -48438787,
    -1817297517, 644500518, 911895606, 1061256767, -150800905, -867204148,
    878471220, -1510714971, -449523227, -251069967, 1905517169, -663508008,
    827548209, 356461077, 67897348, -950889017, 593839651, -1017209405,
    405286936, -1767819370, 84871685, -1699401830, 118033927, 305538066,
    -2137318528, -499261470, -349778453, 661212711, -1295155278, 1973414517,
    152769033, -2086789757, 745822252, 439235610, 455947803, 1857215598,
    1525593178, -1594139744, 1391895634, 994932283, -698239018, -1278313037,
    695947817, -482419229, 795958831, -2070473852, 1408607827, -781665839,
    0, -315833875, 543178784, -65018884, -1312261711, 1542305371,
    1790891114, -884568629, -1093048386, 961245753, 1256100938, 1289001036,
    1491644504, -817199665, -798245936, -282409489, -1427812438, -82383365,
    1137018435, 1305975373, 861234739, -2053893755, 1171229253, -116332039,
    33948674, 2139225727, 1357946960, 1011120188, -1615190625, -1461498968,
    1374921297, -1543610973, 1086357568, -1886780017, -1834139758,
    -1648615011, 944271416, -184225291, -1126210628, -1228834890,
    -629821478, 560153121, 271589392, -15014401, -217121293, -764559406,
    -850624051, 202643468, 322250259, -332413972, 1608629855, -1750977129,
    1154254916, 389623319, -1000893500, -1477290585, 2122513534, 1028094525,
    1689045092, 1575467613, 422261273, 1939203699, 1621147744, -2120738431,
    1339137615, -595614756, 577127458, 712922154, -1867826288, -2004677752,
    1187679302, -299251730, -1194103880, 339486740, -562452514, 1591917662,
    186455563, -612979237, -532948000, 844522546, 978220090, 169743370,
    1239126601, 101321734, 611076132, 1558493276, -1034051646, -747717165,
    -1393605716, 1655096418, -1851246191, -1784401515, -466103324,
    2039214713, -416098841, -935097400, 928607799, 1840765549, -1920204403,
    -714821163, 1322425422, -1444918871, 1823791212, 1459268694, -200805388,
    -366620694, 1706019429, 2056189050, -1360443474, 135794696, -1160417350,
    2022240376, 628050469, 779246638, 472135708, -1494132826, -1261997132,
    -967731258, -400307224, -579034659, 1956440180, 522272287, 1272813131,
    -1109630531, -1954148981, -1970991222, 1888542832, 1044544574,
    -1245417035, 1722469478, 1222152264, 50660867, -167643146, 236067854,
    1638122081, 895445557, 1475980887, -1177523783, -2037311610,
    -1051158079, 489110045, -1632032866, -516367903, -132912136,
    -1733088360, 288563729, 1773916777, -646927911, -1903622258,
    -1800981612, -1682559589, 505560094, -2020469369, -383727127,
    -834041906, 1442818645, 678973480, -545610273, -1936784500, -1577559647,
    -1988097655, 219617805, -1076206145, -432941082, 1120306242, 1756942440,
    1103331905, -1716508263, 762796589, 252780047, -1328841808, 1425844308, 
    -1143575109, 372911126 };
const int sm_T4[256] =
{ 1667474886, 2088535288, 2004326894, 2071694838, -219017729, 1802223062,
    1869591006, -976923503, 808472672, 16843522, 1734846926, 724270422,
    -16901657, -673750347, -1414797747, 1987484396, -892713585, -2105369313,
    -909557623, 2105378810, -84273681, 1499065266, 1195886990, -252703749,
    -1381110719, -724277325, -1566376609, -1347425723, -1667449053,
    -1532692653, 1920112356, -1061135461, -1212693899, -33743647,
    -1819038147, 640051788, 909531756, 1061110142, -134806795, -859025533,
    875846760, -1515850671, -437963567, -235861767, 1903268834, -656903253,
    825316194, 353713962, 67374088, -943238507, 589522246, -1010606435,
    404236336, -1768513225, 84217610, -1701137105, 117901582, 303183396,
    -2139055333, -488489505, -336910643, 656894286, -1296904833, 1970642922,
    151591698, -2088526307, 741110872, 437923380, 454765878, 1852748508,
    1515908788, -1600062629, 1381168804, 993742198, -690593353, -1280061827,
    690584402, -471646499, 791638366, -2071685357, 1398011302, -774805319,
    0, -303223615, 538992704, -50585629, -1313748871, 1532751286,
    1785380564, -875870579, -1094788761, 960056178, 1246420628, 1280103576,
    1482221744, -808498555, -791647301, -269538619, -1431640753, -67430675,
    1128514950, 1296947098, 859002214, -2054843375, 1162203018, -101117719,
    33687044, 2139062782, 1347481760, 1010582648, -1616922075, -1465326773,
    1364325282, -1549533603, 1077985408, -1886418427, -1835881153,
    -1650607071, 943212656, -168491791, -1128472733, -1229536905,
    -623217233, 555836226, 269496352, -58651, -202174723, -757961281,
    -842183551, 202118168, 320025894, -320065597, 1600119230, -1751670219,
    1145359496, 387397934, -993765485, -1482165675, 2122220284, 1027426170,
    1684319432, 1566435258, 421079858, 1936954854, 1616945344, -2122213351,
    1330631070, -589529181, 572679748, 707427924, -1869567173, -2004319477,
    1179044492, -286381625, -1195846805, 336870440, -555845209, 1583276732,
    185277718, -606374227, -522175525, 842159716, 976899700, 168435220,
    1229577106, 101059084, 606366792, 1549591736, -1027449441, -741118275,
    -1397952701, 1650632388, -1852725191, -1785355215, -454805549,
    2038008818, -404278571, -926399605, 926374254, 1835907034, -1920103423,
    -707435343, 1313788572, -1448484791, 1819063512, 1448540844, -185333773,
    -353753649, 1701162954, 2054852340, -1364268729, 134748176, -1162160785,
    2021165296, 623210314, 774795868, 471606328, -1499008681, -1263220877,
    -960081513, -387439669, -572687199, 1953799400, 522133822, 1263263126,
    -1111630751, -1953790451, -1970633457, 1886425312, 1044267644,
    -1246378895, 1718004428, 1212733584, 50529542, -151649801, 235803164,
    1633788866, 892690282, 1465383342, -1179004823, -2038001385,
    -1044293479, 488449850, -1633765081, -505333543, -117959701,
    -1734823125, 286339874, 1768537042, -640061271, -1903261433,
    -1802197197, -1684294099, 505291324, -2021158379, -370597687,
    -825341561, 1431699370, 673740880, -539002203, -1936945405, -1583220647,
    -1987477495, 218961690, -1077945755, -421121577, 1111672452, 1751693520,
    1094828930, -1717981143, 757954394, 252645662, -1330590853, 1414855848,
    -1145317779, 370555436 };
const int sm_T5[256] =
{ 1374988112, 2118214995, 437757123, 975658646, 1001089995, 530400753,
    -1392879445, 1273168787, 540080725, -1384747530, -1999866223,
    -184398811, 1340463100, -987051049, 641025152, -1251826801, -558802359,
    632953703, 1172967064, 1576976609, -1020300030, -2125664238,
    -1924753501, 1809054150, 59727847, 361929877, -1083344149, -1789765158,
    -725712083, 1484005843, 1239443753, -1899378620, 1975683434, -191989384,
    -1722270101, 666464733, -1092530250, -259478249, -920605594, 2110667444,
    1675577880, -451268222, -1756286112, 1649639237, -1318815776,
    -1150570876, -25059300, -116905068, 1883793496, -1891238631,
    -1797362553, 1383856311, -1418472669, 1917518562, -484470953,
    1716890410, -1293211641, 800440835, -2033878118, -751368027, 807962610,
    599762354, 33778362, -317291940, -1966138325, -1485196142, -217582864,
    1315562145, 1708848333, 101039829, -785096161, -995688822, 875451293,
    -1561111136, 92987698, -1527321739, 193195065, 1080094634, 1584504582,
    -1116860335, 1042385657, -1763899843, -583137874, 1306967366,
    -1856729675, 1908694277, 67556463, 1615861247, 429456164, -692196969,
    -1992277044, 1742315127, -1326955843, 126454664, -417768648, 2043211483,
    -1585706425, 2084704233, -125559095, 0, 159417987, 841739592, 504459436,
    1817866830, -49348613, 260388950, 1034867998, 908933415, 168810852,
    1750902305, -1688513327, 607530554, 202008497, -1822955761, -1259432238,
    463180190, -2134850225, 1641816226, 1517767529, 470948374, -493635062,
    -1063245083, 1008918595, 303765277, 235474187, -225720403, 766945465,
    337553864, 1475418501, -1351284916, -291906117, -1551933187, -150919521,
    1551037884, 1147550661, 1543208500, -1958532746, -886847780,
    -1225917336, -1192955549, -684598070, 1113818384, 328671808,
    -2067394272, -2058738563, -759480840, -1359400431, -953573011,
    496906059, -592301837, 226906860, 2009195472, 733156972, -1452230247,
    294930682, 1206477858, -1459843900, -1594867942, 1451044056, 573804783,
    -2025238841, -650587711, -1932877058, -1730933962, -1493859889,
    -1518674392, -625504730, 1068351396, 742039012, 1350078989, 1784663195,
    1417561698, -158526526, -1864845080, 775550814, -2101104651,
    -1621262146, 1775276924, 1876241833, -819653965, -928212677, 270040487,
    -392404114, -616842373, -853116919, 1851332852, -325404927, -2091935064,
    -426414491, -1426069890, 566021896, -283776794, -1159226407, 1248802510,
    -358676012, 699432150, 832877231, 708780849, -962227152, 899835584,
    1951317047, -58537306, -527380304, 866637845, -251357110, 1106041591,
    2144161806, 395441711, 1984812685, 1139781709, -861254316, -459930401,
    -1630423581, 1282050075, -1054072904, 1181045119, -1654724092, 25965917,
    -91786125, -83148498, -1285087910, -1831087534, -384805325, 1842759443,
    -1697160820, 933301370, 1509430414, -351060855, -827774994, -1218328267,
    -518199827, 2051518780, -1663901863, 1441952575, 404016761, 1942435775,
    1408749034, 1610459739, -549621996, 2017778566, -894438527, -1184316354,
    941896748, -1029488545, 371049330, -1126030068, 675039627, -15887039,
    967311729, 135050206, -659233636, 1683407248, 2076935265, -718096784,
    108, -793225406 };

const int sm_T6[256] =
{ 1347548327, 1400783205, -1021700188, -1774573730, -885281941, -249586363,
    -1414727080, -1823743229, 1428173050, -156404115, -1853305738,
    636813900, -61872681, -674944309, -2144979644, -1883938141, 1239331162,
    1730525723, -1740248562, -513933632, 46346101, 310463728, -1551022441,
    -966011911, -419197089, -1793748324, -339776134, -627748263, 768917123,
    -749177823, 692707433, 1150208456, 1786102409, 2029293177, 1805211710,
    -584599183, -1229004465, 401639597, 1724457132, -1266823622, 409198410,
    -2098914767, 1620529459, 1164071807, -525245321, -2068091986, 486441376,
    -1795618773, 1483753576, 428819965, -2020286868, -1219331080, 598438867,
    -495826174, 1474502543, 711349675, 129166120, 53458370, -1702443653,
    -1512884472, -231724921, -1306280027, -1174273174, 1559041666,
    730517276, -1834518092, -252508174, -1588696606, -848962828, -721025602,
    533804130, -1966823682, -1657524653, -1599933611, 839224033, 1973745387,
    957055980, -1438621457, 106852767, 1371368976, -113368694, 1033297158,
    -1361232379, 1179510461, -1248766835, 91341917, 1862534868, -10465259,
    605657339, -1747534359, -863420349, 2003294622, -1112479678,
    -2012771957, 954669403, -612775698, 1201765386, -377732593, -906460130,
    0, -2096529274, 1211247597, -1407315600, 1315723890, -67301633,
    1443857720, 507358933, 657861945, 1678381017, 560487590, -778347692,
    975451694, -1324610969, 261314535, -759894378, -1642357871, 1333838021,
    -1570644960, 1767536459, 370938394, 182621114, -440360918, 1128014560,
    487725847, 185469197, -1376613433, -1188186456, -938205527, -2057834215,
    1286567175, -1141990947, -39616672, -1611202266, -1134791947,
    -985373125, 878443390, 1988838185, -590666810, 1756818940, 1673061617,
    -891866660, 272786309, 1075025698, 545572369, 2105887268, -120407235,
    296679730, 1841768865, 1260232239, -203640272, -334657966, -797457949,
    1814803222, -1716948807, -99511224, 575138148, -995558260, 446754879,
    -665420500, -282971248, -947435186, -1042728751, -24327518, 915985419,
    -811141759, 681933534, 651868046, -1539330625, -466863459, 223377554,
    -1687527476, 1649704518, -1024029421, -393160520, 1580087799,
    -175979601, -1096852096, 2087309459, -1452288723, -1278270190,
    1003007129, -1492117379, 1860738147, 2077965243, 164439672, -194094824,
    32283319, -1467789414, 1709610350, 2125135846, 136428751, -420538904,
    -642062437, -833982666, -722821367, -701910916, -1355701070, 824852259,
    818324884, -1070226842, 930369212, -1493400886, -1327460144, 355706840,
    1257309336, -146674470, 243256656, 790073846, -1921626666, 1296297904,
    1422699085, -538667516, -476130891, 457992840, -1195299809, 2135319889,
    77422314, 1560382517, 1945798516, 788204353, 1521706781, 1385356242,
    870912086, 325965383, -1936009375, 2050466060, -1906706412, -1981082820,
    -288446169, 901210569, -304014107, 1014646705, 1503449823, 1062597235,
    2031621326, -1082931401, -363595827, 1533017514, 350174575, -2038938405,
    -2117423117, 1052338372, 741876788, 1606591296, 1914052035, 213705253,
    -1960297399, 1107234197, 1899603969, -569897805, -1663519516,
    -1872472383, 1635502980, 1893020342, 1950903388, 1120974935 };

const int sm_T7[256] =
{ -1487908364, 1699970625, -1530717673, 1586903591, 1808481195, 1173430173,
    1487645946, 59984867, -95084496, 1844882806, 1989249228, 1277555970,
    -671330331, -875051734, 1149249077, -1550863006, 1514790577, 459744698,
    244860394, -1058972162, 1963115311, -267222708, -1750889146, -104436781,
    1608975247, -1667951214, 2062270317, 1507497298, -2094148418, 567498868,
    1764313568, -935031095, -1989511742, 2037970062, 1047239000, 1910319033,
    1337376481, -1390940024, -1402549984, 984907214, 1243112415, 830661914,
    861968209, 2135253587, 2011214180, -1367032981, -1608712575, 731183368,
    1750626376, -48656571, 1820824798, -122203525, -752637069, 48394827,
    -1890065633, -1423284651, 671593195, -1039978571, 2073724613, 145085239,
    -2014171096, -1515052097, 1790575107, -2107839210, 472615631,
    -1265457287, -219090169, -492745111, -187865638, -1093335547,
    1646252340, -24460122, 1402811438, 1436590835, -516815478, -344611594,
    -331805821, -274055072, -1626972559, 273792366, -1963377119, 104699613,
    95345982, -1119466010, -1917480620, 1560637892, -730921978, 369057872,
    -81520232, -375925059, 1137477952, -1636341799, 1119727848, -1954019447,
    1530455833, -287606328, 172466556, 266959938, 516552836, 0, -2038232704,
    -314035669, 1890328081, 1917742170, -262898, 945164165, -719438418,
    958871085, -647755249, -1507760036, 1423022939, 775562294, 1739656202,
    -418409641, -1764576018, -1851909221, -984645440, 547512796, 1265195639,
    437656594, -1173691757, 719700128, -532464606, 387781147, 218828297,
    -944901493, -1464259146, -1446505442, 428169201, 122466165, -574886247,
    1627235199, 648017665, -172204942, 1002783846, 2117360635, 695634755,
    -958608605, -60246291, -245122844, -590686415, -2062531997, 574624663,
    287343814, 612205898, 1039717051, 840019705, -1586641111, 793451934,
    821288114, 1391201670, -472877119, 376187827, -1181111952, 1224348052,
    1679968233, -1933268740, 1058709744, 752375421, -1863376333, 1321699145,
    -775825096, -1560376118, 188127444, -2117097739, -567761542,
    -1910056265, -1079754835, -1645990854, -1844621192, -862229921,
    1180849278, 331544205, -1192718120, -144822727, -1342864701,
    -2134991011, -1820562992, 766078933, 313773861, -1724135252, 2108100632,
    1668212892, -1149510853, 2013908262, 418672217, -1224610662,
    -1700232369, 1852171925, -427906305, -821550660, -387518699,
    -1680229657, 919489135, 164948639, 2094410160, -1297141340, 590424639,
    -1808742747, 1723872674, -1137216434, -895026046, -793714544,
    -669699161, -1739919100, -621329940, 1343127501, -164685935, -695372211,
    -1337113617, 1297403050, 81781910, -1243373871, -2011476886, 532201772,
    1367295589, -368796322, 895287692, 1953757831, 1093597963, 492483431,
    -766340389, 1446242576, 1192455638, 1636604631, 209336225, 344873464,
    1015671571, 669961897, -919226527, -437395172, -1321436601, -547775278,
    1933530610, -830924780, 935293895, -840281097, -1436852227, 1863638845,
    -611944380, -209597777, -1002522264, 875313188, 1080017571, -1015933411,
    621591778, 1233856572, -1790836979, 24197544, -1277294580, -459482956,
    -1047501738, -2073986101, -1234119374, 1551124588, 1463996600 };

const int sm_T8[256] =
{ -190361519, 1097159550, 396673818, 660510266, -1418998981, -1656360673,
    -94852180, -486304949, 821712160, 1986918061, -864644728, 38544885,
    -438830001, 718002117, 893681702, 1654886325, -1319482914, -1172609243,
    -368142267, -20913827, 796197571, 1290801793, 1184342925, -738605461,
    -1889540349, -1835231979, 1836772287, 1381620373, -1098699308,
    1948373848, -529979063, -909622130, -1031181707, -1904641804,
    1480485785, -1183720153, -514869570, -2001922064, 548169417, -835013507,
    -548792221, 439452389, 1362321559, 1400849762, 1685577905, 1806599355,
    -2120213250, 137073913, 1214797936, 1174215055, -563312748, 2079897426,
    1943217067, 1258480242, 529487843, 1437280870, -349698126, -1245576401,
    -981755258, 923313619, 679998000, -1079659997, 57326082, 377642221,
    -820237430, 2041877159, 133361907, 1776460110, -621490843, 96392454,
    878845905, -1493267772, 777231668, -212492126, -1964953083, -152341084,
    -2081670901, 1626319424, 1906247262, 1846563261, 562755902, -586793578,
    1040559837, -423803315, 1418573201, -1000536719, 114585348, 1343618912,
    -1728371687, -1108764714, 1078185097, -643926169, -398279248,
    -1987344377, 425408743, -923870343, 2081048481, 1108339068, -2078357000,
    0, -2138668279, 736970802, 292596766, 1517440620, 251657213,
    -2059905521, -1361764803, 758720310, 265905162, 1554391400, 1532285339,
    908999204, 174567692, 1474760595, -292105548, -1684955621, -1060810880,
    -601841055, 2001430874, 303699484, -1816524062, -1607801408, 585122620,
    454499602, 151849742, -1949848078, -1230456531, 514443284, -249985705,
    1963412655, -1713521682, 2137062819, 19308535, 1928707164, 1715193156,
    -75615141, 1126790795, 600235211, -302225226, -453942344, 836553431,
    1669664834, -1759363053, -971956092, 1243905413, -1153566510,
    -114159186, 698445255, -1641067747, -1305414692, -2041385971,
    -1042034569, -1290376149, 1891211689, -1807156719, -379313593,
    -57883480, -264299872, 2100090966, 865136418, 1229899655, 953270745,
    -895287668, -737462632, -176042074, 2061379749, -1215420710,
    -1379949505, 983426092, 2022837584, 1607244650, 2118541908, -1928084746,
    -658970480, 972512814, -1011878526, 1568718495, -795640727, -718427793,
    621982671, -1399243832, 410887952, -1671205144, 1002142683, 645401037,
    1494807662, -1699282452, 1335535747, -1787927066, -1671510, -1127282655,
    367585007, -409216582, 1865862730, -1626745622, -1333995991,
    -1531793615, 1059270954, -1517014842, -1570324427, 1320957812,
    -2100648196, -1865371424, -1479011021, 77089521, -321194175, -850391425,
    -1846137065, 1305906550, -273658557, -1437772596, -1778065436,
    -776608866, 1787304780, 740276417, 1699839814, 1592394909, -1942659839,
    -2022411270, 188821243, 1729977011, -606973294, 274084841, -699985043,
    -681472870, -1593017801, -132870567, 322734571, -1457000754, 1640576439,
    484830689, 1202797690, -757114468, -227328171, 349075736, -952647821,
    -137500077, -39167137, 1030690015, 1155237496, -1342996022, 1757691577,
    607398968, -1556062270, 499347990, -500888388, 1011452712, 227885567,
    -1476300487, 213114376, -1260086056, 1455525988, -880516741, 850817237,
    1817998408, -1202240816 };

const int sm_U1[256] =
{ 0, 235474187, 470948374, 303765277, 941896748, 908933415, 607530554,
    708780849, 1883793496, 2118214995, 1817866830, 1649639237, 1215061108,
    1181045119, 1417561698, 1517767529, -527380304, -291906117, -58537306,
    -225720403, -659233636, -692196969, -995688822, -894438527, -1864845080,
    -1630423581, -1932877058, -2101104651, -1459843900, -1493859889,
    -1259432238, -1159226407, -616842373, -718096784, -953573011,
    -920605594, -484470953, -317291940, -15887039, -251357110, -1418472669,
    -1518674392, -1218328267, -1184316354, -1822955761, -1654724092,
    -1891238631, -2125664238, 1001089995, 899835584, 666464733, 699432150,
    59727847, 226906860, 530400753, 294930682, 1273168787, 1172967064,
    1475418501, 1509430414, 1942435775, 2110667444, 1876241833, 1641816226,
    -1384747530, -1551933187, -1318815776, -1083344149, -1789765158,
    -1688513327, -1992277044, -2025238841, -583137874, -751368027,
    -1054072904, -819653965, -451268222, -351060855, -116905068, -150919521,
    1306967366, 1139781709, 1374988112, 1610459739, 1975683434, 2076935265,
    1775276924, 1742315127, 1034867998, 866637845, 566021896, 800440835,
    92987698, 193195065, 429456164, 395441711, 1984812685, 2017778566,
    1784663195, 1683407248, 1315562145, 1080094634, 1383856311, 1551037884,
    101039829, 135050206, 437757123, 337553864, 1042385657, 807962610,
    573804783, 742039012, -1763899843, -1730933962, -1966138325,
    -2067394272, -1359400431, -1594867942, -1293211641, -1126030068,
    -426414491, -392404114, -91786125, -191989384, -558802359, -793225406,
    -1029488545, -861254316, 1106041591, 1340463100, 1576976609, 1408749034,
    2043211483, 2009195472, 1708848333, 1809054150, 832877231, 1068351396,
    766945465, 599762354, 159417987, 126454664, 361929877, 463180190,
    -1585706425, -1351284916, -1116860335, -1285087910, -1722270101,
    -1756286112, -2058738563, -1958532746, -785096161, -549621996,
    -853116919, -1020300030, -384805325, -417768648, -184398811, -83148498,
    -1697160820, -1797362553, -2033878118, -1999866223, -1561111136,
    -1392879445, -1092530250, -1326955843, -358676012, -459930401,
    -158526526, -125559095, -759480840, -592301837, -827774994, -1063245083,
    2051518780, 1951317047, 1716890410, 1750902305, 1113818384, 1282050075,
    1584504582, 1350078989, 168810852, 67556463, 371049330, 404016761,
    841739592, 1008918595, 775550814, 540080725, -325404927, -493635062,
    -259478249, -25059300, -725712083, -625504730, -928212677, -962227152,
    -1663901863, -1831087534, -2134850225, -1899378620, -1527321739,
    -1426069890, -1192955549, -1225917336, 202008497, 33778362, 270040487,
    504459436, 875451293, 975658646, 675039627, 641025152, 2084704233,
    1917518562, 1615861247, 1851332852, 1147550661, 1248802510, 1484005843,
    1451044056, 933301370, 967311729, 733156972, 632953703, 260388950,
    25965917, 328671808, 496906059, 1206477858, 1239443753, 1543208500,
    1441952575, 2144161806, 1908694277, 1675577880, 1842759443, -684598070,
    -650587711, -886847780, -987051049, -283776794, -518199827, -217582864,
    -49348613, -1485196142, -1452230247, -1150570876, -1251826801,
    -1621262146, -1856729675, -2091935064, -1924753501 };

const int sm_U2[256] =
{ 0, 185469197, 370938394, 487725847, 741876788, 657861945, 975451694,
    824852259, 1483753576, 1400783205, 1315723890, 1164071807, 1950903388,
    2135319889, 1649704518, 1767536459, -1327460144, -1141990947,
    -1493400886, -1376613433, -1663519516, -1747534359, -1966823682,
    -2117423117, -393160520, -476130891, -24327518, -175979601, -995558260,
    -811141759, -759894378, -642062437, 2077965243, 1893020342, 1841768865,
    1724457132, 1474502543, 1559041666, 1107234197, 1257309336, 598438867,
    681933534, 901210569, 1052338372, 261314535, 77422314, 428819965,
    310463728, -885281941, -1070226842, -584599183, -701910916, -419197089,
    -334657966, -249586363, -99511224, -1823743229, -1740248562,
    -2057834215, -1906706412, -1082931401, -1266823622, -1452288723,
    -1570644960, -156404115, -39616672, -525245321, -339776134, -627748263,
    -778347692, -863420349, -947435186, -1361232379, -1512884472,
    -1195299809, -1278270190, -2098914767, -1981082820, -1795618773,
    -1611202266, 1179510461, 1296297904, 1347548327, 1533017514, 1786102409,
    1635502980, 2087309459, 2003294622, 507358933, 355706840, 136428751,
    53458370, 839224033, 957055980, 605657339, 790073846, -1921626666,
    -2038938405, -1687527476, -1872472383, -1588696606, -1438621457,
    -1219331080, -1134791947, -721025602, -569897805, -1021700188,
    -938205527, -113368694, -231724921, -282971248, -466863459, 1033297158,
    915985419, 730517276, 545572369, 296679730, 446754879, 129166120,
    213705253, 1709610350, 1860738147, 1945798516, 2029293177, 1239331162,
    1120974935, 1606591296, 1422699085, -146674470, -61872681, -513933632,
    -363595827, -612775698, -797457949, -848962828, -966011911, -1355701070,
    -1539330625, -1188186456, -1306280027, -2096529274, -2012771957,
    -1793748324, -1642357871, 1201765386, 1286567175, 1371368976,
    1521706781, 1805211710, 1620529459, 2105887268, 1988838185, 533804130,
    350174575, 164439672, 46346101, 870912086, 954669403, 636813900,
    788204353, -1936009375, -2020286868, -1702443653, -1853305738,
    -1599933611, -1414727080, -1229004465, -1112479678, -722821367,
    -538667516, -1024029421, -906460130, -120407235, -203640272, -288446169,
    -440360918, 1014646705, 930369212, 711349675, 560487590, 272786309,
    457992840, 106852767, 223377554, 1678381017, 1862534868, 1914052035,
    2031621326, 1211247597, 1128014560, 1580087799, 1428173050, 32283319,
    182621114, 401639597, 486441376, 768917123, 651868046, 1003007129,
    818324884, 1503449823, 1385356242, 1333838021, 1150208456, 1973745387,
    2125135846, 1673061617, 1756818940, -1324610969, -1174273174,
    -1492117379, -1407315600, -1657524653, -1774573730, -1960297399,
    -2144979644, -377732593, -495826174, -10465259, -194094824, -985373125,
    -833982666, -749177823, -665420500, 2050466060, 1899603969, 1814803222,
    1730525723, 1443857720, 1560382517, 1075025698, 1260232239, 575138148,
    692707433, 878443390, 1062597235, 243256656, 91341917, 409198410,
    325965383, -891866660, -1042728751, -590666810, -674944309, -420538904,
    -304014107, -252508174, -67301633, -1834518092, -1716948807,
    -2068091986, -1883938141, -1096852096, -1248766835, -1467789414,
    -1551022441, };

const int sm_U3[256] =
{ 0, 218828297, 437656594, 387781147, 875313188, 958871085, 775562294,
    590424639, 1750626376, 1699970625, 1917742170, 2135253587, 1551124588,
    1367295589, 1180849278, 1265195639, -793714544, -574886247, -895026046,
    -944901493, -459482956, -375925059, -24460122, -209597777, -1192718120,
    -1243373871, -1560376118, -1342864701, -1933268740, -2117097739,
    -1764576018, -1680229657, -1149510853, -1234119374, -1586641111,
    -1402549984, -1890065633, -2107839210, -1790836979, -1739919100,
    -752637069, -567761542, -919226527, -1002522264, -418409641, -368796322,
    -48656571, -267222708, 1808481195, 1723872674, 1910319033, 2094410160,
    1608975247, 1391201670, 1173430173, 1224348052, 59984867, 244860394,
    428169201, 344873464, 935293895, 984907214, 766078933, 547512796,
    1844882806, 1627235199, 2011214180, 2062270317, 1507497298, 1423022939,
    1137477952, 1321699145, 95345982, 145085239, 532201772, 313773861,
    830661914, 1015671571, 731183368, 648017665, -1119466010, -1337113617,
    -1487908364, -1436852227, -1989511742, -2073986101, -1820562992,
    -1636341799, -719438418, -669699161, -821550660, -1039978571,
    -516815478, -331805821, -81520232, -164685935, -695372211, -611944380,
    -862229921, -1047501738, -492745111, -274055072, -122203525, -172204942,
    -1093335547, -1277294580, -1530717673, -1446505442, -1963377119,
    -2014171096, -1863376333, -1645990854, 104699613, 188127444, 472615631,
    287343814, 840019705, 1058709744, 671593195, 621591778, 1852171925,
    1668212892, 1953757831, 2037970062, 1514790577, 1463996600, 1080017571,
    1297403050, -621329940, -671330331, -1058972162, -840281097, -287606328,
    -472877119, -187865638, -104436781, -1297141340, -1079754835,
    -1464259146, -1515052097, -2038232704, -1954019447, -1667951214,
    -1851909221, 172466556, 122466165, 273792366, 492483431, 1047239000,
    861968209, 612205898, 695634755, 1646252340, 1863638845, 2013908262,
    1963115311, 1446242576, 1530455833, 1277555970, 1093597963, 1636604631,
    1820824798, 2073724613, 1989249228, 1436590835, 1487645946, 1337376481,
    1119727848, 164948639, 81781910, 331544205, 516552836, 1039717051,
    821288114, 669961897, 719700128, -1321436601, -1137216434, -1423284651,
    -1507760036, -2062531997, -2011476886, -1626972559, -1844621192,
    -647755249, -730921978, -1015933411, -830924780, -314035669, -532464606,
    -144822727, -95084496, -1224610662, -1173691757, -1390940024,
    -1608712575, -2094148418, -1910056265, -1724135252, -1808742747,
    -547775278, -766340389, -984645440, -935031095, -344611594, -427906305,
    -245122844, -60246291, 1739656202, 1790575107, 2108100632, 1890328081,
    1402811438, 1586903591, 1233856572, 1149249077, 266959938, 48394827,
    369057872, 418672217, 1002783846, 919489135, 567498868, 752375421,
    209336225, 24197544, 376187827, 459744698, 945164165, 895287692,
    574624663, 793451934, 1679968233, 1764313568, 2117360635, 1933530610,
    1343127501, 1560637892, 1243112415, 1192455638, -590686415, -775825096,
    -958608605, -875051734, -387518699, -437395172, -219090169, -262898,
    -1265457287, -1181111952, -1367032981, -1550863006, -2134991011,
    -1917480620, -1700232369, -1750889146 };

const int sm_U4[256] =
{ 0, 151849742, 303699484, 454499602, 607398968, 758720310, 908999204,
    1059270954, 1214797936, 1097159550, 1517440620, 1400849762, 1817998408,
    1699839814, 2118541908, 2001430874, -1865371424, -1713521682,
    -2100648196, -1949848078, -1260086056, -1108764714, -1493267772,
    -1342996022, -658970480, -776608866, -895287668, -1011878526, -57883480,
    -176042074, -292105548, -409216582, 1002142683, 850817237, 698445255,
    548169417, 529487843, 377642221, 227885567, 77089521, 1943217067,
    2061379749, 1640576439, 1757691577, 1474760595, 1592394909, 1174215055,
    1290801793, -1418998981, -1570324427, -1183720153, -1333995991,
    -1889540349, -2041385971, -1656360673, -1807156719, -486304949,
    -368142267, -249985705, -132870567, -952647821, -835013507, -718427793,
    -601841055, 1986918061, 2137062819, 1685577905, 1836772287, 1381620373,
    1532285339, 1078185097, 1229899655, 1040559837, 923313619, 740276417,
    621982671, 439452389, 322734571, 137073913, 19308535, -423803315,
    -273658557, -190361519, -39167137, -1031181707, -880516741, -795640727,
    -643926169, -1361764803, -1479011021, -1127282655, -1245576401,
    -1964953083, -2081670901, -1728371687, -1846137065, 1305906550,
    1155237496, 1607244650, 1455525988, 1776460110, 1626319424, 2079897426,
    1928707164, 96392454, 213114376, 396673818, 514443284, 562755902,
    679998000, 865136418, 983426092, -586793578, -737462632, -820237430,
    -971956092, -114159186, -264299872, -349698126, -500888388, -1787927066,
    -1671205144, -2022411270, -1904641804, -1319482914, -1202240816,
    -1556062270, -1437772596, -321194175, -438830001, -20913827, -137500077,
    -923870343, -1042034569, -621490843, -738605461, -1531793615,
    -1379949505, -1230456531, -1079659997, -2138668279, -1987344377,
    -1835231979, -1684955621, 2081048481, 1963412655, 1846563261,
    1729977011, 1480485785, 1362321559, 1243905413, 1126790795, 878845905,
    1030690015, 645401037, 796197571, 274084841, 425408743, 38544885,
    188821243, -681472870, -563312748, -981755258, -864644728, -212492126,
    -94852180, -514869570, -398279248, -1626745622, -1778065436,
    -1928084746, -2078357000, -1153566510, -1305414692, -1457000754,
    -1607801408, 1202797690, 1320957812, 1437280870, 1554391400, 1669664834,
    1787304780, 1906247262, 2022837584, 265905162, 114585348, 499347990,
    349075736, 736970802, 585122620, 972512814, 821712160, -1699282452,
    -1816524062, -2001922064, -2120213250, -1098699308, -1215420710,
    -1399243832, -1517014842, -757114468, -606973294, -1060810880,
    -909622130, -152341084, -1671510, -453942344, -302225226, 174567692,
    57326082, 410887952, 292596766, 777231668, 660510266, 1011452712,
    893681702, 1108339068, 1258480242, 1343618912, 1494807662, 1715193156,
    1865862730, 1948373848, 2100090966, -1593017801, -1476300487,
    -1290376149, -1172609243, -2059905521, -1942659839, -1759363053,
    -1641067747, -379313593, -529979063, -75615141, -227328171, -850391425,
    -1000536719, -548792221, -699985043, 836553431, 953270745, 600235211,
    718002117, 367585007, 484830689, 133361907, 251657213, 2041877159,
    1891211689, 1806599355, 1654886325, 1568718495, 1418573201, 1335535747,
    1184342925 };

const char sm_rcon[30] =
{ 1, 2, 4, 8, 16, 32, 64, -128, 27, 54, 108, -40, -85, 77, -102, 47, 94, -68,
    99, -58, -105, 53, 106, -44, -77, 125, -6, -17, -59, -111 };

const int sm_shifts[3][4][2] =
{
{
{ 0, 0 },
{ 1, 3 },
{ 2, 2 },
{ 3, 1 } },
{
{ 0, 0 },
{ 1, 5 },
{ 2, 4 },
{ 3, 3 } },
{
{ 0, 0 },
{ 1, 7 },
{ 3, 5 },
{ 4, 4 } } };

//Error Messages
char const* sm_szErrorMsg1 = "Object not Initialized";
char const* sm_szErrorMsg2 = "Data not multiple of Block Size";

//Null chain
char const* sm_chain0 =
    "\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0\0";
static int Mul(int a, int b)
{
    return (a != 0 && b != 0) ?
            sm_alog[(sm_log[a & 0xFF] + sm_log[b & 0xFF]) % 255] : 0;
}

//Convenience method used in generating Transposition Boxes
static int Mul4(int a, char b[])
{
    if (a == 0)
    return 0;
    a = sm_log[a & 0xFF];
    int a0 = (b[0] != 0) ? sm_alog[(a + sm_log[b[0] & 0xFF]) % 255] & 0xFF : 0;
    int a1 = (b[1] != 0) ? sm_alog[(a + sm_log[b[1] & 0xFF]) % 255] & 0xFF : 0;
    int a2 = (b[2] != 0) ? sm_alog[(a + sm_log[b[2] & 0xFF]) % 255] & 0xFF : 0;
    int a3 = (b[3] != 0) ? sm_alog[(a + sm_log[b[3] & 0xFF]) % 255] & 0xFF : 0;
    return a0 << 24 | a1 << 16 | a2 << 8 | a3;
}
//CONSTRUCTOR
 ovo::math::AES:: AES() :
    m_bKeyInit(false), m_keylength(0), m_blockSize(0), m_iROUNDS(0)
{
}

//DESTRUCTOR
 ovo::math::AES::~ AES()
{
}

void  ovo::math::AES::Xor(char* buff, char const* chain)
{
    if (false == m_bKeyInit)
        return;
    for (int i = 0; i < m_blockSize; i++)
    *(buff++) ^= *(chain++);
}

void  ovo::math::AES::DefEncryptBlock(char const* in, char* result)
{
    if (false == m_bKeyInit)
    return;
    int* Ker = m_Ke[0];
    int t0 = ((unsigned char) *(in++) << 24);
    t0 |= ((unsigned char) *(in++) << 16);
    t0 |= ((unsigned char) *(in++) << 8);
    (t0 |= (unsigned char) *(in++)) ^= Ker[0];
    int t1 = ((unsigned char) *(in++) << 24);
    t1 |= ((unsigned char) *(in++) << 16);
    t1 |= ((unsigned char) *(in++) << 8);
    (t1 |= (unsigned char) *(in++)) ^= Ker[1];
    int t2 = ((unsigned char) *(in++) << 24);
    t2 |= ((unsigned char) *(in++) << 16);
    t2 |= ((unsigned char) *(in++) << 8);
    (t2 |= (unsigned char) *(in++)) ^= Ker[2];
    int t3 = ((unsigned char) *(in++) << 24);
    t3 |= ((unsigned char) *(in++) << 16);
    t3 |= ((unsigned char) *(in++) << 8);
    (t3 |= (unsigned char) *(in++)) ^= Ker[3];
    int a0, a1, a2, a3;
    //Apply Round Transforms
    for (int r = 1; r < m_iROUNDS; r++)
    {
    Ker = m_Ke[r];
        a0 = (sm_T1[(t0 >> 24) & 0xFF] ^ sm_T2[(t1 >> 16) & 0xFF]
            ^ sm_T3[(t2 >> 8) & 0xFF] ^ sm_T4[t3 & 0xFF]) ^ Ker[0];
        a1 = (sm_T1[(t1 >> 24) & 0xFF] ^ sm_T2[(t2 >> 16) & 0xFF]
            ^ sm_T3[(t3 >> 8) & 0xFF] ^ sm_T4[t0 & 0xFF]) ^ Ker[1];
        a2 = (sm_T1[(t2 >> 24) & 0xFF] ^ sm_T2[(t3 >> 16) & 0xFF]
            ^ sm_T3[(t0 >> 8) & 0xFF] ^ sm_T4[t1 & 0xFF]) ^ Ker[2];
        a3 = (sm_T1[(t3 >> 24) & 0xFF] ^ sm_T2[(t0 >> 16) & 0xFF]
            ^ sm_T3[(t1 >> 8) & 0xFF] ^ sm_T4[t2 & 0xFF]) ^ Ker[3];
        t0 = a0;
        t1 = a1;
        t2 = a2;
        t3 = a3;
    }
    //Last Round is special
    Ker = m_Ke[m_iROUNDS];
    int tt = Ker[0];
    result[0] = sm_S[(t0 >> 24) & 0xFF] ^ (tt >> 24);
    result[1] = sm_S[(t1 >> 16) & 0xFF] ^ (tt >> 16);
    result[2] = sm_S[(t2 >> 8) & 0xFF] ^ (tt >> 8);
    result[3] = sm_S[t3 & 0xFF] ^ tt;
    tt = Ker[1];
    result[4] = sm_S[(t1 >> 24) & 0xFF] ^ (tt >> 24);
    result[5] = sm_S[(t2 >> 16) & 0xFF] ^ (tt >> 16);
    result[6] = sm_S[(t3 >> 8) & 0xFF] ^ (tt >> 8);
    result[7] = sm_S[t0 & 0xFF] ^ tt;
    tt = Ker[2];
    result[8] = sm_S[(t2 >> 24) & 0xFF] ^ (tt >> 24);
    result[9] = sm_S[(t3 >> 16) & 0xFF] ^ (tt >> 16);
    result[10] = sm_S[(t0 >> 8) & 0xFF] ^ (tt >> 8);
    result[11] = sm_S[t1 & 0xFF] ^ tt;
    tt = Ker[3];
    result[12] = sm_S[(t3 >> 24) & 0xFF] ^ (tt >> 24);
    result[13] = sm_S[(t0 >> 16) & 0xFF] ^ (tt >> 16);
    result[14] = sm_S[(t1 >> 8) & 0xFF] ^ (tt >> 8);
    result[15] = sm_S[t2 & 0xFF] ^ tt;
}

//Convenience method to decrypt exactly one block of plaintext, assuming
//Rijndael's default block size (128-bit).
// in         - The ciphertext.
// result     - The plaintext generated from a ciphertext using the session key.
void  ovo::math::AES::DefDecryptBlock(char const* in, char* result)
{
    if (false == m_bKeyInit)
        return;
    int* Kdr = m_Kd[0];
    int t0 = ((unsigned char) *(in++) << 24);
    t0 = t0 | ((unsigned char) *(in++) << 16);
    t0 |= ((unsigned char) *(in++) << 8);
    (t0 |= (unsigned char) *(in++)) ^= Kdr[0];
    int t1 = ((unsigned char) *(in++) << 24);
    t1 |= ((unsigned char) *(in++) << 16);
    t1 |= ((unsigned char) *(in++) << 8);
    (t1 |= (unsigned char) *(in++)) ^= Kdr[1];
    int t2 = ((unsigned char) *(in++) << 24);
    t2 |= ((unsigned char) *(in++) << 16);
    t2 |= ((unsigned char) *(in++) << 8);
    (t2 |= (unsigned char) *(in++)) ^= Kdr[2];
    int t3 = ((unsigned char) *(in++) << 24);
    t3 |= ((unsigned char) *(in++) << 16);
    t3 |= ((unsigned char) *(in++) << 8);
    (t3 |= (unsigned char) *(in++)) ^= Kdr[3];
    int a0, a1, a2, a3;
    for (int r = 1; r < m_iROUNDS; r++) // apply round transforms
    {
        Kdr = m_Kd[r];
        a0 = (sm_T5[(t0 >> 24) & 0xFF] ^ sm_T6[(t3 >> 16) & 0xFF]
                ^ sm_T7[(t2 >> 8) & 0xFF] ^ sm_T8[t1 & 0xFF]) ^ Kdr[0];
        a1 = (sm_T5[(t1 >> 24) & 0xFF] ^ sm_T6[(t0 >> 16) & 0xFF]
                ^ sm_T7[(t3 >> 8) & 0xFF] ^ sm_T8[t2 & 0xFF]) ^ Kdr[1];
        a2 = (sm_T5[(t2 >> 24) & 0xFF] ^ sm_T6[(t1 >> 16) & 0xFF]
                ^ sm_T7[(t0 >> 8) & 0xFF] ^ sm_T8[t3 & 0xFF]) ^ Kdr[2];
        a3 = (sm_T5[(t3 >> 24) & 0xFF] ^ sm_T6[(t2 >> 16) & 0xFF]
                ^ sm_T7[(t1 >> 8) & 0xFF] ^ sm_T8[t0 & 0xFF]) ^ Kdr[3];
        t0 = a0;
        t1 = a1;
        t2 = a2;
        t3 = a3;
    }
    //Last Round is special
    Kdr = m_Kd[m_iROUNDS];
    int tt = Kdr[0];
    result[0] = sm_Si[(t0 >> 24) & 0xFF] ^ (tt >> 24);
    result[1] = sm_Si[(t3 >> 16) & 0xFF] ^ (tt >> 16);
    result[2] = sm_Si[(t2 >> 8) & 0xFF] ^ (tt >> 8);
    result[3] = sm_Si[t1 & 0xFF] ^ tt;
    tt = Kdr[1];
    result[4] = sm_Si[(t1 >> 24) & 0xFF] ^ (tt >> 24);
    result[5] = sm_Si[(t0 >> 16) & 0xFF] ^ (tt >> 16);
    result[6] = sm_Si[(t3 >> 8) & 0xFF] ^ (tt >> 8);
    result[7] = sm_Si[t2 & 0xFF] ^ tt;
    tt = Kdr[2];
    result[8] = sm_Si[(t2 >> 24) & 0xFF] ^ (tt >> 24);
    result[9] = sm_Si[(t1 >> 16) & 0xFF] ^ (tt >> 16);
    result[10] = sm_Si[(t0 >> 8) & 0xFF] ^ (tt >> 8);
    result[11] = sm_Si[t3 & 0xFF] ^ tt;
    tt = Kdr[3];
    result[12] = sm_Si[(t3 >> 24) & 0xFF] ^ (tt >> 24);
    result[13] = sm_Si[(t2 >> 16) & 0xFF] ^ (tt >> 16);
    result[14] = sm_Si[(t1 >> 8) & 0xFF] ^ (tt >> 8);
    result[15] = sm_Si[t0 & 0xFF] ^ tt;
}

//Encrypt exactly one block of plaintext.
// in           - The plaintext.
// result       - The ciphertext generated from a plaintext using the key.
void  ovo::math::AES::EncryptBlock(char const* in, char* result)
{
    if (false == m_bKeyInit)
        return;
    if (DEFAULT_BLOCK_SIZE == m_blockSize)
    {
        DefEncryptBlock(in, result);
        return;
    }
    int BC = m_blockSize / 4;
    int SC = (BC == 4) ? 0 : (BC == 6 ? 1 : 2);
    int s1 = sm_shifts[SC][1][0];
    int s2 = sm_shifts[SC][2][0];
    int s3 = sm_shifts[SC][3][0];
    //Temporary Work Arrays
    int i;
    int tt;
    int* pi = t;
    for (i = 0; i < BC; i++)
    {
        *pi = ((unsigned char) *(in++) << 24);
        *pi |= ((unsigned char) *(in++) << 16);
        *pi |= ((unsigned char) *(in++) << 8);
        (*(pi++) |= (unsigned char) *(in++)) ^= m_Ke[0][i];
    }
    //Apply Round Transforms
    for (int r = 1; r < m_iROUNDS; r++)
    {
        for (i = 0; i < BC; i++)
            a[i] = (sm_T1[(t[i] >> 24) & 0xFF]
                    ^ sm_T2[(t[(i + s1) % BC] >> 16) & 0xFF]
                    ^ sm_T3[(t[(i + s2) % BC] >> 8) & 0xFF]
                    ^ sm_T4[t[(i + s3) % BC] & 0xFF]) ^ m_Ke[r][i];
        memcpy(t, a, 4 * BC);
    }
    int j;
    //Last Round is Special
    for (i = 0, j = 0; i < BC; i++)
    {
        tt = m_Ke[m_iROUNDS][i];
        result[j++] = sm_S[(t[i] >> 24) & 0xFF] ^ (tt >> 24);
        result[j++] = sm_S[(t[(i + s1) % BC] >> 16) & 0xFF] ^ (tt >> 16);
        result[j++] = sm_S[(t[(i + s2) % BC] >> 8) & 0xFF] ^ (tt >> 8);
        result[j++] = sm_S[t[(i + s3) % BC] & 0xFF] ^ tt;
    }
}
 
//Decrypt exactly one block of ciphertext.
// in         - The ciphertext.
// result     - The plaintext generated from a ciphertext using the session key.
void  ovo::math::AES::DecryptBlock(char const* in, char* result)
{
    if (false == m_bKeyInit)
        return;
    if (DEFAULT_BLOCK_SIZE == m_blockSize)
    {
        DefDecryptBlock(in, result);
        return;
    }
    int BC = m_blockSize / 4;
    int SC = BC == 4 ? 0 : (BC == 6 ? 1 : 2);
    int s1 = sm_shifts[SC][1][1];
    int s2 = sm_shifts[SC][2][1];
    int s3 = sm_shifts[SC][3][1];
    //Temporary Work Arrays
    int i;
    int tt;
    int* pi = t;
    for (i = 0; i < BC; i++)
    {
        *pi = ((unsigned char) *(in++) << 24);
        *pi |= ((unsigned char) *(in++) << 16);
        *pi |= ((unsigned char) *(in++) << 8);
        (*(pi++) |= (unsigned char) *(in++)) ^= m_Kd[0][i];
    }
    //Apply Round Transforms
    for (int r = 1; r < m_iROUNDS; r++)
    {
        for (i = 0; i < BC; i++)
            a[i] = (sm_T5[(t[i] >> 24) & 0xFF]
                    ^ sm_T6[(t[(i + s1) % BC] >> 16) & 0xFF]
                    ^ sm_T7[(t[(i + s2) % BC] >> 8) & 0xFF]
                    ^ sm_T8[t[(i + s3) % BC] & 0xFF]) ^ m_Kd[r][i];
        memcpy(t, a, 4 * BC);
    }
    int j;
    //Last Round is Special
    for (i = 0, j = 0; i < BC; i++)
    {
        tt = m_Kd[m_iROUNDS][i];
        result[j++] = sm_Si[(t[i] >> 24) & 0xFF] ^ (tt >> 24);
        result[j++] = sm_Si[(t[(i + s1) % BC] >> 16) & 0xFF] ^ (tt >> 16);
        result[j++] = sm_Si[(t[(i + s2) % BC] >> 8) & 0xFF] ^ (tt >> 8);
        result[j++] = sm_Si[t[(i + s3) % BC] & 0xFF] ^ tt;
    }
}
 
//Expand a user-supplied key material into a session key.
// key        - The 128/192/256-bit user-key to use.
// chain      - initial chain block for CBC and CFB modes.
// keylength  - 16, 24 or 32 bytes
// blockSize  - The block size in bytes of this Rijndael (16, 24 or 32 bytes).
void  ovo::math::AES::MakeKey(char const* key, char const* chain, int keylength,
        int blockSize)
{
    if (NULL == key)
        return;
    if (!(16 == keylength || 24 == keylength || 32 == keylength))
        return;
    if (!(16 == blockSize || 24 == blockSize || 32 == blockSize))
        return;
    m_keylength = keylength;
    m_blockSize = blockSize;
    //Initialize the chain
    memcpy(m_chain0, chain, m_blockSize);
    memcpy(m_chain, chain, m_blockSize);
    //Calculate Number of Rounds
    switch (m_keylength)
    {
    case 16:
        m_iROUNDS = (m_blockSize == 16) ? 10 : (m_blockSize == 24 ? 12 : 14);
        break;
 
    case 24:
        m_iROUNDS = (m_blockSize != 32) ? 12 : 14;
        break;
 
    default: // 32 bytes = 256 bits
        m_iROUNDS = 14;
    }
    int BC = m_blockSize / 4;
    int i, j;
    for (i = 0; i <= m_iROUNDS; i++)
    {
        for (j = 0; j < BC; j++)
            m_Ke[i][j] = 0;
    }
    for (i = 0; i <= m_iROUNDS; i++)
    {
        for (j = 0; j < BC; j++)
            m_Kd[i][j] = 0;
    }
    int ROUND_KEY_COUNT = (m_iROUNDS + 1) * BC;
    int KC = m_keylength / 4;
    //Copy user material bytes into temporary ints
    int* pi = tk;
    char const* pc = key;
    for (i = 0; i < KC; i++)
    {
        *pi = (unsigned char) *(pc++) << 24;
        *pi |= (unsigned char) *(pc++) << 16;
        *pi |= (unsigned char) *(pc++) << 8;
        *(pi++) |= (unsigned char) *(pc++);
    }
    //Copy values into round key arrays
    int t = 0;
    for (j = 0; (j < KC) && (t < ROUND_KEY_COUNT); j++, t++)
    {
        m_Ke[t / BC][t % BC] = tk[j];
        m_Kd[m_iROUNDS - (t / BC)][t % BC] = tk[j];
    }
    int tt, rconpointer = 0;
    while (t < ROUND_KEY_COUNT)
    {
        //Extrapolate using phi (the round key evolution function)
        tt = tk[KC - 1];
        tk[0] ^= (sm_S[(tt >> 16) & 0xFF] & 0xFF) << 24
                ^ (sm_S[(tt >> 8) & 0xFF] & 0xFF) << 16
                ^ (sm_S[tt & 0xFF] & 0xFF) << 8
                ^ (sm_S[(tt >> 24) & 0xFF] & 0xFF)
                ^ (sm_rcon[rconpointer++] & 0xFF) << 24;
        if (KC != 8)
            for (i = 1, j = 0; i < KC;)
                tk[i++] ^= tk[j++];
        else
        {
            for (i = 1, j = 0; i < KC / 2;)
                tk[i++] ^= tk[j++];
            tt = tk[KC / 2 - 1];
            tk[KC / 2] ^= (sm_S[tt & 0xFF] & 0xFF)
                    ^ (sm_S[(tt >> 8) & 0xFF] & 0xFF) << 8
                    ^ (sm_S[(tt >> 16) & 0xFF] & 0xFF) << 16
                    ^ (sm_S[(tt >> 24) & 0xFF] & 0xFF) << 24;
            for (j = KC / 2, i = j + 1; i < KC;)
                tk[i++] ^= tk[j++];
        }
        //Copy values into round key arrays
        for (j = 0; (j < KC) && (t < ROUND_KEY_COUNT); j++, t++)
        {
            m_Ke[t / BC][t % BC] = tk[j];
            m_Kd[m_iROUNDS - (t / BC)][t % BC] = tk[j];
        }
    }
    //Inverse MixColumn where needed
    for (int r = 1; r < m_iROUNDS; r++)
        for (j = 0; j < BC; j++)
        {
            tt = m_Kd[r][j];
            m_Kd[r][j] = sm_U1[(tt >> 24) & 0xFF] ^ sm_U2[(tt >> 16) & 0xFF]
                    ^ sm_U3[(tt >> 8) & 0xFF] ^ sm_U4[tt & 0xFF];
        }
    m_bKeyInit = true;
}
void  ovo::math::AES::Encrypt(char const* in, char* result, size_t n, int iMode)
{
    if (false == m_bKeyInit)
        return;
    //n should be > 0 and multiple of m_blockSize
    if (0 == n || n % m_blockSize != 0)
        return;
    int i;
    char const* pin;
    char* presult;
    if (CBC == iMode) //CBC mode, using the Chain
    {
        for (i = 0, pin = in, presult = result; i < n / m_blockSize; i++)
        {
            Xor(m_chain, pin);
            EncryptBlock(m_chain, presult);
            memcpy(m_chain, presult, m_blockSize);
            pin += m_blockSize;
            presult += m_blockSize;
        }
    }
    else if (CFB == iMode) //CFB mode, using the Chain
    {
        for (i = 0, pin = in, presult = result; i < n / m_blockSize; i++)
        {
            EncryptBlock(m_chain, presult);
            Xor(presult, pin);
            memcpy(m_chain, presult, m_blockSize);
            pin += m_blockSize;
            presult += m_blockSize;
        }
    }
    else //ECB mode, not using the Chain
    {
        for (i = 0, pin = in, presult = result; i < n / m_blockSize; i++)
        {
            EncryptBlock(pin, presult);
            pin += m_blockSize;
            presult += m_blockSize;
        }
    }
}
 
void  ovo::math::AES::Decrypt(char const* in, char* result, size_t n, int iMode)
{
    if (false == m_bKeyInit)
        return;
    //n should be > 0 and multiple of m_blockSize
    if (0 == n || n % m_blockSize != 0)
        return;
    int i;
    char const* pin;
    char* presult;
    if (CBC == iMode) //CBC mode, using the Chain
    {
        for (i = 0, pin = in, presult = result; i < n / m_blockSize; i++)
        {
            DecryptBlock(pin, presult);
            Xor(presult, m_chain);
            memcpy(m_chain, pin, m_blockSize);
            pin += m_blockSize;
            presult += m_blockSize;
        }
    }
    else if (CFB == iMode) //CFB mode, using the Chain, not using Decrypt()
    {
        for (i = 0, pin = in, presult = result; i < n / m_blockSize; i++)
        {
            EncryptBlock(m_chain, presult);
            //memcpy(presult, pin, m_blockSize);
            Xor(presult, pin);
            memcpy(m_chain, pin, m_blockSize);
            pin += m_blockSize;
            presult += m_blockSize;
        }
    }
    else //ECB mode, not using the Chain
    {
        for (i = 0, pin = in, presult = result; i < n / m_blockSize; i++)
        {
            DecryptBlock(pin, presult);
            pin += m_blockSize;
            presult += m_blockSize;
        }
    }
}




#ifdef _pthread

/****** Class Timer ******/

/**
 * 
 * @From file sha256.h
 * @author yimian || developed form github.com/shalithasuranga/timercpp
 * 
 */

void ovo::Timer::setTimeout(auto function, int delay)
{
    this->clear = false;
    std::thread t([=]() {
        if(this->clear) return;
        std::this_thread::sleep_for(std::chrono::milliseconds(delay));
        if(this->clear) return;
        function();
    });
    t.detach();
}

void ovo::Timer::setInterval(auto function, int interval)
{
    this->clear = false;
    std::thread t([=]() {
        while(true) {
            if(this->clear) return;
            std::this_thread::sleep_for(std::chrono::milliseconds(interval));
            if(this->clear) return;
            function();
        }
    });
    t.detach();
}

void ovo::Timer::stop()
{
    this->clear = true;
}


#endif



/****** Class db ******/

/**
 * push data to database 
 *
 * @Author yimian
 * @access public
 * @param data data
 * @param string key
 * @return void
 */
void ovo::db::pushData(const string& key, data& data){

    if(this->_AES) m.aes_ini(key);
    this->checkFolder();

    string fName = getFName(key);

    ofstream ous(fName.c_str());
    data.iter=data.begin();
    for(;data.iter!=data.end();data.iter++){
        if(_AES){
            ous << "_" << m.aes_encode(data.iter->first)<<" _"<<m.aes_encode(data.iter->second)<<endl;
        }else{
            ous << "_" << m.base64_encode(data.iter->first)<<" _"<<m.base64_encode(data.iter->second)<<endl;
        }
    }
    ous.close();
}


/**
 * add data to database 
 *
 * @Author yimian
 * @access public
 * @param data data
 * @param string key
 * @return void
 */
void ovo::db::addData(const string& key, data& data){

    if(this->_AES) m.aes_ini(key);
    this->checkFolder();

    string fName = getFName(key);

    ofstream ous(fName.c_str(), ios::app);
    data.iter=data.begin();
    for(;data.iter!=data.end();data.iter++){
        if(_AES){
            ous << "_" << m.aes_encode(data.iter->first)<<" _"<<m.aes_encode(data.iter->second)<<endl;
        }else{
            ous << "_" << m.base64_encode(data.iter->first)<<" _"<<m.base64_encode(data.iter->second)<<endl;
        }
    }
    ous.close();
}


/**
 * get data from database 
 *
 * @Author yimian
 * @access public
 * @param string key
 * @return data data
 */
ovo::data ovo::db::getData(const string& key){

    data data;

    if(_AES) m.aes_ini(key);
    this->checkFolder();

    string fName = getFName(key);

    string t_first;
    string t_second;

    ifstream ins(fName.c_str());
    if(!ins){
        data.insert("_isExist", "NO");
        return data;
    }
    while(!ins.eof()){
        ins >> t_first >> t_second;
        if(!t_first.length()>=1 || !t_second.length()>=1) return data;
        t_first = t_first.substr(1);
        t_second = t_second.substr(1);
        if(_AES){
            data.insert((m.aes_decode(t_first)), m.aes_decode(t_second));
        }else{
            data.insert((m.base64_decode(t_first)), m.base64_decode(t_second));
        }
    }
    data.clear(m.base64_decode(t_first));
    ins.close();
    return data;
}


/**
 * get data from database 
 *
 * @Author yimian
 * @access public
 * @param string key
 * @return data data
 */
void ovo::db::getData(const string& key, std::vector<string>& v1, std::vector<string>& v2){


    if(_AES) m.aes_ini(key);
    this->checkFolder();

    string fName = getFName(key);

    string t_first;
    string t_second;

    ifstream ins(fName.c_str());
    if(!ins){
        return ;
    }
    while(!ins.eof()){

        ins >> t_first >> t_second;
        t_first = t_first.substr(1);
        t_second = t_second.substr(1);
        if(_AES){
            v1.push_back((m.aes_decode(t_first)));
            v2.push_back(m.aes_decode(t_second));
        }else{
            v1.push_back((m.base64_decode(t_first)));
            v2.push_back(m.base64_decode(t_second));
        }
    }
    v1.pop_back();
    v2.pop_back();
    ins.close();
    return ;
}


/**
 * classify data in database 
 *
 * @Author yimian
 * @access public
 * @param string key
 * @param data delData
 * @return void
 */
void ovo::db::classify(const string& key, std::vector<string> v){

    ovo::data d;

    d = this->getData(key);
    if(d["_isExist"] == "NO") return;

    d.classify();

    if(!v.size()){
        this->pushData(key, d);
        return;
    }

    for(int i = 0; i < v.size(); i ++){

        d.clear(v[i]);
    }

    this->pushData(key, d);
}




/**
 * delete data from database 
 *
 * @Author yimian
 * @access public
 * @param string key
 * @return void
 */
void ovo::db::del(const string& key){

    string cmd = "del " + this->getFName(key);
    system(cmd.c_str());
}