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93 lines
2.2 KiB
C
93 lines
2.2 KiB
C
/*
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* SHA-384 hash implementation and interface functions
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* Copyright (c) 2015, Pali Rohár <pali.rohar@gmail.com>
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*
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* This software may be distributed under the terms of the BSD license.
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* See README for more details.
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*/
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#include "includes.h"
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#include "common.h"
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#include "sha384_i.h"
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#include "crypto.h"
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/**
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* sha384_vector - SHA384 hash for data vector
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* @num_elem: Number of elements in the data vector
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* @addr: Pointers to the data areas
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* @len: Lengths of the data blocks
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* @mac: Buffer for the hash
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* Returns: 0 on success, -1 of failure
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*/
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int sha384_vector(size_t num_elem, const u8 *addr[], const size_t *len,
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u8 *mac)
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{
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struct sha384_state ctx;
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size_t i;
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sha384_init(&ctx);
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for (i = 0; i < num_elem; i++)
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if (sha384_process(&ctx, addr[i], len[i]))
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return -1;
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if (sha384_done(&ctx, mac))
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return -1;
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return 0;
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}
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/* ===== start - public domain SHA384 implementation ===== */
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/* This is based on SHA384 implementation in LibTomCrypt that was released into
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* public domain by Tom St Denis. */
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#define CONST64(n) n ## ULL
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/**
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Initialize the hash state
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@param md The hash state you wish to initialize
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@return CRYPT_OK if successful
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*/
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void sha384_init(struct sha384_state *md)
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{
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md->curlen = 0;
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md->length = 0;
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md->state[0] = CONST64(0xcbbb9d5dc1059ed8);
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md->state[1] = CONST64(0x629a292a367cd507);
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md->state[2] = CONST64(0x9159015a3070dd17);
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md->state[3] = CONST64(0x152fecd8f70e5939);
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md->state[4] = CONST64(0x67332667ffc00b31);
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md->state[5] = CONST64(0x8eb44a8768581511);
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md->state[6] = CONST64(0xdb0c2e0d64f98fa7);
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md->state[7] = CONST64(0x47b5481dbefa4fa4);
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}
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int sha384_process(struct sha384_state *md, const unsigned char *in,
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unsigned long inlen)
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{
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return sha512_process(md, in, inlen);
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}
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/**
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Terminate the hash to get the digest
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@param md The hash state
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@param out [out] The destination of the hash (48 bytes)
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@return CRYPT_OK if successful
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*/
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int sha384_done(struct sha384_state *md, unsigned char *out)
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{
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unsigned char buf[64];
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if (md->curlen >= sizeof(md->buf))
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return -1;
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if (sha512_done(md, buf) != 0)
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return -1;
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os_memcpy(out, buf, 48);
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return 0;
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}
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/* ===== end - public domain SHA384 implementation ===== */
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