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45 lines
1.6 KiB
45 lines
1.6 KiB
Port of the OpenBSD `bcrypt_pbkdf` function to pure Javascript. `npm`-ified |
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version of [Devi Mandiri's port](https://github.com/devi/tmp/blob/master/js/bcrypt_pbkdf.js), |
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with some minor performance improvements. The code is copied verbatim (and |
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un-styled) from Devi's work. |
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This product includes software developed by Niels Provos. |
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## API |
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### `bcrypt_pbkdf.pbkdf(pass, passlen, salt, saltlen, key, keylen, rounds)` |
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Derive a cryptographic key of arbitrary length from a given password and salt, |
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using the OpenBSD `bcrypt_pbkdf` function. This is a combination of Blowfish and |
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SHA-512. |
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See [this article](http://www.tedunangst.com/flak/post/bcrypt-pbkdf) for |
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further information. |
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Parameters: |
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* `pass`, a Uint8Array of length `passlen` |
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* `passlen`, an integer Number |
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* `salt`, a Uint8Array of length `saltlen` |
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* `saltlen`, an integer Number |
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* `key`, a Uint8Array of length `keylen`, will be filled with output |
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* `keylen`, an integer Number |
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* `rounds`, an integer Number, number of rounds of the PBKDF to run |
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### `bcrypt_pbkdf.hash(sha2pass, sha2salt, out)` |
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Calculate a Blowfish hash, given SHA2-512 output of a password and salt. Used as |
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part of the inner round function in the PBKDF. |
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Parameters: |
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* `sha2pass`, a Uint8Array of length 64 |
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* `sha2salt`, a Uint8Array of length 64 |
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* `out`, a Uint8Array of length 32, will be filled with output |
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## License |
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This source form is a 1:1 port from the OpenBSD `blowfish.c` and `bcrypt_pbkdf.c`. |
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As a result, it retains the original copyright and license. The two files are |
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under slightly different (but compatible) licenses, and are here combined in |
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one file. For each of the full license texts see `LICENSE`.
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