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/* sha2 implementation excerpted from code by Aaron D. Gifford */
#ifndef UTIL_SHA_H
#define UTIL_SHA_H
#include <stddef.h>
#include <stdint.h>
#include "utildecl.h"
#define SHA256_BLOCK_LENGTH 64
#define SHA256_DIGEST_LENGTH 32
#define SHA256_STRING_LENGTH (SHA256_DIGEST_LENGTH * 2 + 1)
#define SHA384_BLOCK_LENGTH 128
#define SHA384_DIGEST_LENGTH 48
#define SHA384_STRING_LENGTH (SHA384_DIGEST_LENGTH * 2 + 1)
#define SHA512_BLOCK_LENGTH 128
#define SHA512_DIGEST_LENGTH 64
#define SHA512_STRING_LENGTH (SHA512_DIGEST_LENGTH * 2 + 1)
//#define sha256_state sha256_state_t
//#define sha384_state sha384_state_t
//#define sha512_state sha512_state_t
typedef struct {
uint32_t words[8];
uint64_t bitcount;
union {
uint8_t buffer[SHA256_BLOCK_LENGTH];
uint32_t buffer32[SHA256_BLOCK_LENGTH / sizeof(uint32_t)];
uint64_t buffer64[SHA256_BLOCK_LENGTH / sizeof(uint64_t)];
};
} sha256_state;
typedef struct {
uint64_t words[8];
uint64_t bitcount[2];
union {
uint8_t buffer[SHA512_BLOCK_LENGTH];
uint64_t buffer64[SHA512_BLOCK_LENGTH / sizeof(uint64_t)];
};
} sha512_state;
typedef sha512_state sha384_state;
enum {
SHA_BYTES = 0,
SHA_UCHEX = (1<<0),
SHA_LCHEX = (1<<1)
};
#define SHA_DEFAULT SHA_BYTES
#define SHA_HEX (SHA_UCHEX|SHA_LCHEX)
UTILAPI sha256_state * sha256_digest_init (sha256_state *state);
UTILAPI sha384_state * sha384_digest_init (sha384_state *state);
UTILAPI sha512_state * sha512_digest_init (sha512_state *state);
UTILAPI void sha256_digest_add (sha256_state *state, const void *data, size_t size);
UTILAPI void sha384_digest_add (sha384_state *state, const void *data, size_t size);
UTILAPI void sha512_digest_add (sha512_state *state, const void *data, size_t size);
UTILAPI void sha256_digest_get (sha256_state *state, uint8_t digest[], int flags);
UTILAPI void sha384_digest_get (sha384_state *state, uint8_t digest[], int flags);
UTILAPI void sha512_digest_get (sha512_state *state, uint8_t digest[], int flags);
UTILAPI void sha256_digest (const void *data, size_t size, uint8_t digest[], int flags);
UTILAPI void sha384_digest (const void *data, size_t size, uint8_t digest[], int flags);
UTILAPI void sha512_digest (const void *data, size_t size, uint8_t digest[], int flags);
UTILAPI int sha256_digest_add_file (sha256_state *state, const char *filename);
UTILAPI int sha256_digest_file (const char *filename, uint8_t digest[], int flags);
UTILAPI int sha384_digest_add_file (sha384_state *state, const char *filename);
UTILAPI int sha384_digest_file (const char *filename, uint8_t digest[], int flags);
UTILAPI int sha512_digest_add_file (sha512_state *state, const char *filename);
UTILAPI int sha512_digest_file (const char *filename, uint8_t digest[], int flags);
#endif
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