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sha256: Use const where possible and add watchdog function

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In preparation for making the hash function common, we may as well use
const where we can.

Also add a watchdog version of the hashing function.

Signed-off-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Simon Glass 2012-12-05 14:46:34 +00:00 • committed by Tom Rini
parent a7d1d76579
commit ec7381fbf6
2 changed files with 42 additions and 3 deletions
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8
include/sha256.h
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@ -3,6 +3,9 @@
#define SHA256_SUM_LEN 32
/* Reset watchdog each time we process this many bytes */
#define CHUNKSZ_SHA256 (64 * 1024)
typedef struct {
uint32_t total[2];
uint32_t state[8];
@ -10,7 +13,10 @@ typedef struct {
} sha256_context;
void sha256_starts(sha256_context * ctx);
void sha256_update(sha256_context * ctx, uint8_t * input, uint32_t length);
void sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length);
void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]);
void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
unsigned char *output, unsigned int chunk_sz);
#endif /* _SHA256_H */