65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/* mhash_snefru.h */
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/* Snefru is a cryptographic hash function invented by Ralph Merkle
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* which supports 128-bit and 256-bit output. It was named after the
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* Egyptian Pharaoh Sneferu, continuing the tradition of the Khufu and
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* Khafre block ciphers.
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*
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* Snefru is a public-domain one-way hash function. For more information see
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* http://www.funet.fi/pub/crypt/mirrors/idea.sec.dsi.unimi.it/rpub.cl.msu.edu/
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* crypt/docs/merkle-khufu-khafre-snefru.txt.gz
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*
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* This code was written by B. Poettering in 2004 for the mhash library. It
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* is in the public domain.
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*/
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#if defined(ENABLE_SNEFRU)
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#if !defined(__MHASH_SNEFRU_H_INCLUDED)
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#define __MHASH_SNEFRU_H_INCLUDED
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#define SNEFRU128_DATA_SIZE 48
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#define SNEFRU128_DIGEST_SIZE 16
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#define SNEFRU128_DIGEST_LEN (SNEFRU128_DIGEST_SIZE / 4)
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#define SNEFRU256_DATA_SIZE 32
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#define SNEFRU256_DIGEST_SIZE 32
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#define SNEFRU256_DIGEST_LEN (SNEFRU256_DIGEST_SIZE / 4)
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#define SNEFRU_BLOCK_SIZE 64
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#define SNEFRU_BLOCK_LEN (SNEFRU_BLOCK_SIZE / 4)
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typedef struct snefru_ctx
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{
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mutils_word8 buffer[SNEFRU128_DATA_SIZE]; /* buffer of data to hash */
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mutils_word64 hashlen; /* number of hashed bits */
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mutils_word32 index; /* index to buffer */
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mutils_word32 hash[SNEFRU_BLOCK_LEN]; /* the hashing state */
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} SNEFRU_CTX;
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void
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snefru_init(struct snefru_ctx *ctx);
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void
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snefru128_update(struct snefru_ctx *ctx, __const mutils_word8 *data, mutils_word32 length);
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void
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snefru256_update(struct snefru_ctx *ctx, __const mutils_word8 *data, mutils_word32 length);
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void
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snefru128_final(struct snefru_ctx *ctx);
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void
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snefru256_final(struct snefru_ctx *ctx);
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void
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snefru128_digest(__const struct snefru_ctx *ctx, mutils_word8 *digest);
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void
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snefru256_digest(__const struct snefru_ctx *ctx, mutils_word8 *digest);
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#endif /* MHASH_SNEFRU_H_INCLUDED */
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#endif
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