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