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38 lines
919 B
C
38 lines
919 B
C
/*
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* BIRD -- HMAC-SHA256 Message Authentication
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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_HMAC_H_
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#define _BIRD_SHA256_HMAC_H_
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#define SHA256_SIZE 32
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#define SHA256_HEX_SIZE 65
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#define SHA224_SIZE 28
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#define SHA224_HEX_SIZE 57
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/* The context used by this module. */
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typedef struct
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{
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u32 h0, h1, h2, h3, h4, h5, h6, h7;
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u32 nblocks;
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int count;
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int finalized:1;
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int use_hmac:1;
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byte buf[64];
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byte opad[64];
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} sha256_hmac_context;
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void sha256_hmac_init(sha256_hmac_context *ctx, const void *key, size_t keylen);
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void sha256_hmac_update(sha256_hmac_context *ctx, const void *buf, size_t buflen);
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const byte *sha256_hmac_final(sha256_hmac_context *ctx);
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#endif /* _BIRD_SHA256_HMAC_H_ */
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