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74 lines
1.8 KiB
C
74 lines
1.8 KiB
C
/*
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* BIRD Library -- SHA-256 and SHA-224 Hash Functions,
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* HMAC-SHA-256 and HMAC-SHA-224 Functions
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*
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* (c) 2015 CZ.NIC z.s.p.o.
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*
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* Based on the code from libgcrypt-1.6.0, which is
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* (c) 2003, 2006, 2008, 2009 Free Software Foundation, Inc.
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*
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* Can be freely distributed and used under the terms of the GNU GPL.
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*/
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#ifndef _BIRD_SHA256_H_
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#define _BIRD_SHA256_H_
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#include "nest/bird.h"
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#define SHA224_SIZE 28
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#define SHA224_HEX_SIZE 57
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#define SHA224_BLOCK_SIZE 64
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#define SHA256_SIZE 32
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#define SHA256_HEX_SIZE 65
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#define SHA256_BLOCK_SIZE 64
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struct sha256_context {
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u32 h0, h1, h2, h3, h4, h5, h6, h7;
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byte buf[SHA256_BLOCK_SIZE];
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uint nblocks;
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uint count;
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};
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#define sha224_context sha256_context
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void sha256_init(struct sha256_context *ctx);
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void sha224_init(struct sha224_context *ctx);
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void sha256_update(struct sha256_context *ctx, const byte *buf, size_t len);
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static inline void sha224_update(struct sha224_context *ctx, const byte *buf, size_t len)
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{ sha256_update(ctx, buf, len); }
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byte *sha256_final(struct sha256_context *ctx);
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static inline byte *sha224_final(struct sha224_context *ctx)
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{ return sha256_final(ctx); }
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/*
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* HMAC-SHA256, HMAC-SHA224
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*/
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struct sha256_hmac_context
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{
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struct sha256_context ictx;
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struct sha256_context octx;
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};
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#define sha224_hmac_context sha256_hmac_context
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void sha256_hmac_init(struct sha256_hmac_context *ctx, const byte *key, size_t keylen);
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void sha224_hmac_init(struct sha224_hmac_context *ctx, const byte *key, size_t keylen);
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void sha256_hmac_update(struct sha256_hmac_context *ctx, const byte *buf, size_t buflen);
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void sha224_hmac_update(struct sha224_hmac_context *ctx, const byte *buf, size_t buflen);
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byte *sha256_hmac_final(struct sha256_hmac_context *ctx);
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byte *sha224_hmac_final(struct sha224_hmac_context *ctx);
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#endif /* _BIRD_SHA256_H_ */
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