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/* public domain md5 implementation based on rfc1321 and libtomcrypt */
struct md5 {
uint64_t len; /* processed message length */
uint32_t h[4]; /* hash state */
uint8_t buf[64]; /* message block buffer */
};
enum { MD5_DIGEST_LENGTH = 16 };
/* reset state */
void md5_init(void *ctx);
/* process message */
void md5_update(void *ctx, const void *m, unsigned long len);
/* get message digest */
/* state is ruined after sum, keep a copy if multiple sum is needed */
/* part of the message might be left in s, zero it if secrecy is needed */
void md5_sum(void *ctx, uint8_t md[MD5_DIGEST_LENGTH]);
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