43 lines
1.4 KiB
C
43 lines
1.4 KiB
C
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// SHA-384. Adapted from LibTomCrypt. This code is Public Domain
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#include "hash.h"
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#include <blue/core/hash.h>
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#include <string.h>
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extern void z__b_sha2_512_update(
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struct b_hash_ctx *md, const void *src, size_t inlen);
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extern void z__b_sha2_512_finish(struct b_hash_ctx *md, void *out, size_t max);
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void sha_init(struct b_hash_ctx *md)
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{
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md->ctx_state.sha2_512.curlen = 0;
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md->ctx_state.sha2_512.length = 0;
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md->ctx_state.sha2_512.state[0] = 0xcbbb9d5dc1059ed8ULL;
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md->ctx_state.sha2_512.state[1] = 0x629a292a367cd507ULL;
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md->ctx_state.sha2_512.state[2] = 0x9159015a3070dd17ULL;
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md->ctx_state.sha2_512.state[3] = 0x152fecd8f70e5939ULL;
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md->ctx_state.sha2_512.state[4] = 0x67332667ffc00b31ULL;
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md->ctx_state.sha2_512.state[5] = 0x8eb44a8768581511ULL;
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md->ctx_state.sha2_512.state[6] = 0xdb0c2e0d64f98fa7ULL;
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md->ctx_state.sha2_512.state[7] = 0x47b5481dbefa4fa4ULL;
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}
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static void sha_update(struct b_hash_ctx *md, const void *in, size_t inlen)
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{
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z__b_sha2_512_update(md, in, inlen);
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}
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static void sha_finish(struct b_hash_ctx *md, void *out, size_t max)
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{
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unsigned char res[B_DIGEST_LENGTH_SHA2_512];
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z__b_sha2_512_finish(md, res, max);
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/* truncate the digest to 384 bits */
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memcpy(out, res, b_min(size_t, max, B_DIGEST_LENGTH_384));
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}
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struct b_hash_function_ops z__b_sha2_384_ops = {
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.hash_init = sha_init,
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.hash_update = sha_update,
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.hash_finish = sha_finish,
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};
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