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Diffstat (limited to 'lib/sha256.h')
| -rw-r--r-- | lib/sha256.h | 66 |
1 files changed, 66 insertions, 0 deletions
diff --git a/lib/sha256.h b/lib/sha256.h new file mode 100644 index 0000000..c93d253 --- /dev/null +++ b/lib/sha256.h @@ -0,0 +1,66 @@ +/*- + * Copyright 2005,2007,2009 Colin Percival + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD: src/lib/libmd/sha256.h,v 1.2 2006/01/17 15:35:56 phk Exp $ + */ + +#ifndef _SHA256_H_ +#define _SHA256_H_ + +#ifdef __cplusplus +extern "C" { +#endif + +typedef struct SHA256Context { + uint32_t state[8]; + uint32_t count[2]; + unsigned char buf[64]; +} SHA256_CTX; + +typedef struct HMAC_SHA256Context { + SHA256_CTX ictx; + SHA256_CTX octx; +} HMAC_SHA256_CTX; + +void SHA256_Init(SHA256_CTX *); +void SHA256_Update(SHA256_CTX *, const void *, size_t); +void SHA256_Final(unsigned char[32], SHA256_CTX *); +void HMAC__SHA256_Init(HMAC_SHA256_CTX *, const void *, size_t); +void HMAC__SHA256_Update(HMAC_SHA256_CTX *, const void *, size_t); +void HMAC__SHA256_Final(unsigned char[32], HMAC_SHA256_CTX *); + +/** + * PBKDF2_SHA256(passwd, passwdlen, salt, saltlen, c, buf, dkLen): + * Compute PBKDF2(passwd, salt, c, dkLen) using HMAC-SHA256 as the PRF, and + * write the output to buf. The value dkLen must be at most 32 * (2^32 - 1). + */ +void PBKDF2_SHA256(const uint8_t *, size_t, const uint8_t *, size_t, uint64_t, + uint8_t *, size_t); + +#ifdef __cplusplus +} +#endif + +#endif /* !_SHA256_H_ */ |