19 lines
630 B
C
19 lines
630 B
C
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/* public domain sha1 implementation based on rfc3174 and libtomcrypt */
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struct sha1 {
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uint64_t len; /* processed message length */
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uint32_t h[5]; /* hash state */
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uint8_t buf[64]; /* message block buffer */
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};
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enum { SHA1_DIGEST_LENGTH = 20 };
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/* reset state */
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void sha1_init(struct sha1 *s);
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/* process message */
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void sha1_update(struct sha1 *s, const void *m, unsigned long len);
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/* get message digest */
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/* state is ruined after sum, keep a copy if multiple sum is needed */
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/* part of the message might be left in s, zero it if secrecy is needed */
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void sha1_sum(struct sha1 *s, uint8_t md[SHA1_DIGEST_LENGTH]);
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