1#ifndef _SHA256_H
2#define _SHA256_H
3
4#define SHA256_SUM_LEN	32
5#define SHA256_DER_LEN	19
6
7extern const uint8_t sha256_der_prefix[];
8
9/* Reset watchdog each time we process this many bytes */
10#define CHUNKSZ_SHA256	(64 * 1024)
11
12typedef struct {
13	uint32_t total[2];
14	uint32_t state[8];
15	uint8_t buffer[64];
16} sha256_context;
17
18void sha256_starts(sha256_context * ctx);
19void sha256_update(sha256_context *ctx, const uint8_t *input, uint32_t length);
20void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]);
21
22void sha256_csum_wd(const unsigned char *input, unsigned int ilen,
23		unsigned char *output, unsigned int chunk_sz);
24
25#endif /* _SHA256_H */
26