| Paul Bakker | f518b16 | 2012-08-23 13:03:18 +0000 | [diff] [blame^] | 1 | /** |
| 2 | * \file pbkdf2.h |
| 3 | * |
| 4 | * \brief Password-Based Key Derivation Function 2 (from PKCS#5) |
| 5 | * |
| 6 | * \author Mathias Olsson <mathias@kompetensum.com> |
| 7 | * |
| 8 | * Copyright (C) 2006-2012, Brainspark B.V. |
| 9 | * |
| 10 | * This file is part of PolarSSL (http://www.polarssl.org) |
| 11 | * Lead Maintainer: Paul Bakker <polarssl_maintainer at polarssl.org> |
| 12 | * |
| 13 | * All rights reserved. |
| 14 | * |
| 15 | * This program is free software; you can redistribute it and/or modify |
| 16 | * it under the terms of the GNU General Public License as published by |
| 17 | * the Free Software Foundation; either version 2 of the License, or |
| 18 | * (at your option) any later version. |
| 19 | * |
| 20 | * This program is distributed in the hope that it will be useful, |
| 21 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 22 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 23 | * GNU General Public License for more details. |
| 24 | * |
| 25 | * You should have received a copy of the GNU General Public License along |
| 26 | * with this program; if not, write to the Free Software Foundation, Inc., |
| 27 | * 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. |
| 28 | */ |
| 29 | #ifndef POLARSSL_PBKDF2_H |
| 30 | #define POLARSSL_PBKDF2_H |
| 31 | |
| 32 | #include <string.h> |
| 33 | |
| 34 | #include "md.h" |
| 35 | |
| 36 | #define POLARSSL_ERR_PBKDF2_BAD_INPUT_DATA -0x007C /**< Bad input parameters to function. */ |
| 37 | |
| 38 | #ifdef __cplusplus |
| 39 | extern "C" { |
| 40 | #endif |
| 41 | |
| 42 | /** |
| 43 | * \brief PKCS#5 PBKDF2 using HMAC |
| 44 | * |
| 45 | * \param ctx Generic HMAC context |
| 46 | * \param password Password to use when generating key |
| 47 | * \param plen Length of password |
| 48 | * \param salt Salt to use when generating key |
| 49 | * \param slen Length of salt |
| 50 | * \param iteration_count Iteration count |
| 51 | * \param key_length Length of generated key |
| 52 | * \param output Generated key. Must be at least as big as key_length |
| 53 | * |
| 54 | * \returns 0 on success, or a PolarSSL error code if verification fails. |
| 55 | */ |
| 56 | int pbkdf2_hmac( md_context_t *ctx, const unsigned char *password, |
| 57 | size_t plen, const unsigned char *salt, size_t slen, |
| 58 | unsigned int iteration_count, |
| 59 | unsigned long key_length, unsigned char *output ); |
| 60 | |
| 61 | |
| 62 | /** |
| 63 | * \brief Checkup routine |
| 64 | * |
| 65 | * \return 0 if successful, or 1 if the test failed |
| 66 | */ |
| 67 | int pbkdf2_self_test( int verbose ); |
| 68 | |
| 69 | #ifdef __cplusplus |
| 70 | } |
| 71 | #endif |
| 72 | |
| 73 | #endif /* pbkdf2.h */ |