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#ifndef _SHA256_H
#define _SHA256_H
#define SHA256_SUM_LEN 32
typedef struct {
uint32_t total[2];
uint32_t state[8];
uint8_t buffer[64];
} sha256_context;
void sha256_starts(sha256_context * ctx);
void sha256_update(sha256_context * ctx, uint8_t * input, uint32_t length);
void sha256_finish(sha256_context * ctx, uint8_t digest[SHA256_SUM_LEN]);
#endif /* _SHA256_H */
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