sha1.h (685B)
- // SPDX-FileCopyrightText: public domain sha1 implementation based on rfc3174 and libtomcrypt
- // SPDX-License-Identifier: 0BSD
- #include <stdint.h>
- struct sha1
- {
- uint64_t len; /* processed message length */
- uint32_t h[5]; /* hash state */
- uint8_t buf[64]; /* message block buffer */
- };
- #define SHA1_DIGEST_LENGTH 20
- /* reset state */
- void sha1_init(void *ctx);
- /* process message */
- void sha1_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 sha1_sum(void *ctx, uint8_t md[SHA1_DIGEST_LENGTH]);