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#ifndef SHA256_H
#define SHA256_H
#include <stddef.h>
#include <stdint.h>
typedef struct {
uint8_t data[64];
uint32_t datalen;
uint32_t bitlen[2];
uint32_t state[8];
} sha256_ctx;
extern void sha256_init(sha256_ctx *ctx);
extern void sha256_transform(sha256_ctx *ctx, uint8_t *data);
extern void sha256_update(sha256_ctx *ctx, uint8_t *data, uint32_t len);
extern void sha256_final(uint8_t *hash, sha256_ctx *ctx);
extern void sha256_hash(char *hash, const char *data, size_t len);
#endif
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