33 lines
875 B
C
33 lines
875 B
C
/* sha.h sha256 and sha224 hash functions */
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#ifndef SHA256_H
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#define SHA256_H
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#include "ustd.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#define sha256_block_size 64
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#define sha256_hash_size 32
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#define sha224_hash_size 28
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/* algorithm context */
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typedef struct sha256_ctx
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{
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unsigned message[16]; /* 512-bit buffer for leftovers */
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uint64_t length; /* number of processed bytes */
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unsigned hash[8]; /* 256-bit algorithm internal hashing state */
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unsigned digest_length; /* length of the algorithm digest in bytes */
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} sha256_ctx;
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void rhash_sha224_init(sha256_ctx* ctx);
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void rhash_sha256_init(sha256_ctx* ctx);
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void rhash_sha256_update(sha256_ctx* ctx, const unsigned char* data, size_t length);
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void rhash_sha256_final(sha256_ctx* ctx, unsigned char result[32]);
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#ifdef __cplusplus
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} /* extern "C" */
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#endif /* __cplusplus */
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#endif /* SHA256_H */
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