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-rw-r--r--libbb/hash_md5_sha.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/libbb/hash_md5_sha.c b/libbb/hash_md5_sha.c
index a53a382..9db79ea8 100644
--- a/libbb/hash_md5_sha.c
+++ b/libbb/hash_md5_sha.c
@@ -794,6 +794,11 @@ static const uint32_t init512_lo[] = {
};
#endif /* NEED_SHA512 */
+// Note: SHA-384 is identical to SHA-512, except that initial hash values are
+// 0xcbbb9d5dc1059ed8, 0x629a292a367cd507, 0x9159015a3070dd17, 0x152fecd8f70e5939,
+// 0x67332667ffc00b31, 0x8eb44a8768581511, 0xdb0c2e0d64f98fa7, 0x47b5481dbefa4fa4,
+// and the output is constructed by omitting last two 64-bit words of it.
+
/* Initialize structure containing state of computation.
(FIPS 180-2:5.3.2) */
void FAST_FUNC sha256_begin(sha256_ctx_t *ctx)