509 lines
14 KiB
C
509 lines
14 KiB
C
/*
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* Copyright 2005 Colin Percival
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* Copyright (c) 2015 Allan Jude <allanjude@FreeBSD.org>
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
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* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
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* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
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* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
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* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
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* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
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* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
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* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
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* SUCH DAMAGE.
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*/
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#include <sys/cdefs.h>
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__FBSDID("$FreeBSD$");
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#include <sys/endian.h>
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#include <sys/types.h>
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#ifdef _KERNEL
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#include <sys/systm.h>
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#else
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#include <string.h>
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#endif
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#include "sha512.h"
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#include "sha512t.h"
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#include "sha384.h"
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#if BYTE_ORDER == BIG_ENDIAN
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/* Copy a vector of big-endian uint64_t into a vector of bytes */
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#define be64enc_vect(dst, src, len) \
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memcpy((void *)dst, (const void *)src, (size_t)len)
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/* Copy a vector of bytes into a vector of big-endian uint64_t */
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#define be64dec_vect(dst, src, len) \
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memcpy((void *)dst, (const void *)src, (size_t)len)
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#else /* BYTE_ORDER != BIG_ENDIAN */
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/*
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* Encode a length len/4 vector of (uint64_t) into a length len vector of
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* (unsigned char) in big-endian form. Assumes len is a multiple of 8.
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*/
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static void
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be64enc_vect(unsigned char *dst, const uint64_t *src, size_t len)
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{
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size_t i;
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for (i = 0; i < len / 8; i++)
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be64enc(dst + i * 8, src[i]);
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}
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/*
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* Decode a big-endian length len vector of (unsigned char) into a length
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* len/4 vector of (uint64_t). Assumes len is a multiple of 8.
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*/
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static void
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be64dec_vect(uint64_t *dst, const unsigned char *src, size_t len)
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{
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size_t i;
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for (i = 0; i < len / 8; i++)
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dst[i] = be64dec(src + i * 8);
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}
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#endif /* BYTE_ORDER != BIG_ENDIAN */
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/* SHA512 round constants. */
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static const uint64_t K[80] = {
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0x428a2f98d728ae22ULL, 0x7137449123ef65cdULL,
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0xb5c0fbcfec4d3b2fULL, 0xe9b5dba58189dbbcULL,
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0x3956c25bf348b538ULL, 0x59f111f1b605d019ULL,
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0x923f82a4af194f9bULL, 0xab1c5ed5da6d8118ULL,
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0xd807aa98a3030242ULL, 0x12835b0145706fbeULL,
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0x243185be4ee4b28cULL, 0x550c7dc3d5ffb4e2ULL,
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0x72be5d74f27b896fULL, 0x80deb1fe3b1696b1ULL,
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0x9bdc06a725c71235ULL, 0xc19bf174cf692694ULL,
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0xe49b69c19ef14ad2ULL, 0xefbe4786384f25e3ULL,
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0x0fc19dc68b8cd5b5ULL, 0x240ca1cc77ac9c65ULL,
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0x2de92c6f592b0275ULL, 0x4a7484aa6ea6e483ULL,
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0x5cb0a9dcbd41fbd4ULL, 0x76f988da831153b5ULL,
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0x983e5152ee66dfabULL, 0xa831c66d2db43210ULL,
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0xb00327c898fb213fULL, 0xbf597fc7beef0ee4ULL,
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0xc6e00bf33da88fc2ULL, 0xd5a79147930aa725ULL,
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0x06ca6351e003826fULL, 0x142929670a0e6e70ULL,
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0x27b70a8546d22ffcULL, 0x2e1b21385c26c926ULL,
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0x4d2c6dfc5ac42aedULL, 0x53380d139d95b3dfULL,
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0x650a73548baf63deULL, 0x766a0abb3c77b2a8ULL,
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0x81c2c92e47edaee6ULL, 0x92722c851482353bULL,
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0xa2bfe8a14cf10364ULL, 0xa81a664bbc423001ULL,
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0xc24b8b70d0f89791ULL, 0xc76c51a30654be30ULL,
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0xd192e819d6ef5218ULL, 0xd69906245565a910ULL,
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0xf40e35855771202aULL, 0x106aa07032bbd1b8ULL,
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0x19a4c116b8d2d0c8ULL, 0x1e376c085141ab53ULL,
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0x2748774cdf8eeb99ULL, 0x34b0bcb5e19b48a8ULL,
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0x391c0cb3c5c95a63ULL, 0x4ed8aa4ae3418acbULL,
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0x5b9cca4f7763e373ULL, 0x682e6ff3d6b2b8a3ULL,
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0x748f82ee5defb2fcULL, 0x78a5636f43172f60ULL,
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0x84c87814a1f0ab72ULL, 0x8cc702081a6439ecULL,
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0x90befffa23631e28ULL, 0xa4506cebde82bde9ULL,
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0xbef9a3f7b2c67915ULL, 0xc67178f2e372532bULL,
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0xca273eceea26619cULL, 0xd186b8c721c0c207ULL,
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0xeada7dd6cde0eb1eULL, 0xf57d4f7fee6ed178ULL,
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0x06f067aa72176fbaULL, 0x0a637dc5a2c898a6ULL,
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0x113f9804bef90daeULL, 0x1b710b35131c471bULL,
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0x28db77f523047d84ULL, 0x32caab7b40c72493ULL,
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0x3c9ebe0a15c9bebcULL, 0x431d67c49c100d4cULL,
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0x4cc5d4becb3e42b6ULL, 0x597f299cfc657e2aULL,
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0x5fcb6fab3ad6faecULL, 0x6c44198c4a475817ULL
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};
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/* Elementary functions used by SHA512 */
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#define Ch(x, y, z) ((x & (y ^ z)) ^ z)
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#define Maj(x, y, z) ((x & (y | z)) | (y & z))
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#define SHR(x, n) (x >> n)
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#define ROTR(x, n) ((x >> n) | (x << (64 - n)))
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#define S0(x) (ROTR(x, 28) ^ ROTR(x, 34) ^ ROTR(x, 39))
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#define S1(x) (ROTR(x, 14) ^ ROTR(x, 18) ^ ROTR(x, 41))
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#define s0(x) (ROTR(x, 1) ^ ROTR(x, 8) ^ SHR(x, 7))
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#define s1(x) (ROTR(x, 19) ^ ROTR(x, 61) ^ SHR(x, 6))
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/* SHA512 round function */
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#define RND(a, b, c, d, e, f, g, h, k) \
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h += S1(e) + Ch(e, f, g) + k; \
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d += h; \
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h += S0(a) + Maj(a, b, c);
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/* Adjusted round function for rotating state */
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#define RNDr(S, W, i, ii) \
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RND(S[(80 - i) % 8], S[(81 - i) % 8], \
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S[(82 - i) % 8], S[(83 - i) % 8], \
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S[(84 - i) % 8], S[(85 - i) % 8], \
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S[(86 - i) % 8], S[(87 - i) % 8], \
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W[i + ii] + K[i + ii])
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/* Message schedule computation */
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#define MSCH(W, ii, i) \
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W[i + ii + 16] = s1(W[i + ii + 14]) + W[i + ii + 9] + \
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s0(W[i + ii + 1]) + W[i + ii]
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/*
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* SHA512 block compression function. The 512-bit state is transformed via
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* the 512-bit input block to produce a new state.
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*/
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static void
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SHA512_Transform(uint64_t *state,
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const unsigned char block[SHA512_BLOCK_LENGTH])
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{
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uint64_t W[80];
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uint64_t S[8];
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int i;
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/* 1. Prepare the first part of the message schedule W. */
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be64dec_vect(W, block, SHA512_BLOCK_LENGTH);
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/* 2. Initialize working variables. */
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memcpy(S, state, SHA512_DIGEST_LENGTH);
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/* 3. Mix. */
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for (i = 0; i < 80; i += 16) {
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RNDr(S, W, 0, i);
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RNDr(S, W, 1, i);
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RNDr(S, W, 2, i);
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RNDr(S, W, 3, i);
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RNDr(S, W, 4, i);
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RNDr(S, W, 5, i);
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RNDr(S, W, 6, i);
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RNDr(S, W, 7, i);
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RNDr(S, W, 8, i);
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RNDr(S, W, 9, i);
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RNDr(S, W, 10, i);
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RNDr(S, W, 11, i);
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RNDr(S, W, 12, i);
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RNDr(S, W, 13, i);
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RNDr(S, W, 14, i);
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RNDr(S, W, 15, i);
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if (i == 64)
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break;
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MSCH(W, 0, i);
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MSCH(W, 1, i);
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MSCH(W, 2, i);
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MSCH(W, 3, i);
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MSCH(W, 4, i);
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MSCH(W, 5, i);
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MSCH(W, 6, i);
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MSCH(W, 7, i);
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MSCH(W, 8, i);
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MSCH(W, 9, i);
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MSCH(W, 10, i);
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MSCH(W, 11, i);
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MSCH(W, 12, i);
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MSCH(W, 13, i);
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MSCH(W, 14, i);
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MSCH(W, 15, i);
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}
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/* 4. Mix local working variables into global state */
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for (i = 0; i < 8; i++)
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state[i] += S[i];
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}
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static unsigned char PAD[SHA512_BLOCK_LENGTH] = {
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0x80, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
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0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0
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};
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/* Add padding and terminating bit-count. */
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static void
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SHA512_Pad(SHA512_CTX * ctx)
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{
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size_t r;
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/* Figure out how many bytes we have buffered. */
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r = (ctx->count[1] >> 3) & 0x7f;
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/* Pad to 112 mod 128, transforming if we finish a block en route. */
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if (r < 112) {
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/* Pad to 112 mod 128. */
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memcpy(&ctx->buf[r], PAD, 112 - r);
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} else {
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/* Finish the current block and mix. */
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memcpy(&ctx->buf[r], PAD, 128 - r);
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SHA512_Transform(ctx->state, ctx->buf);
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/* The start of the final block is all zeroes. */
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memset(&ctx->buf[0], 0, 112);
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}
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/* Add the terminating bit-count. */
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be64enc_vect(&ctx->buf[112], ctx->count, 16);
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/* Mix in the final block. */
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SHA512_Transform(ctx->state, ctx->buf);
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}
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/* SHA-512 initialization. Begins a SHA-512 operation. */
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void
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SHA512_Init(SHA512_CTX * ctx)
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{
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/* Zero bits processed so far */
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ctx->count[0] = ctx->count[1] = 0;
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/* Magic initialization constants */
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ctx->state[0] = 0x6a09e667f3bcc908ULL;
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ctx->state[1] = 0xbb67ae8584caa73bULL;
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ctx->state[2] = 0x3c6ef372fe94f82bULL;
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ctx->state[3] = 0xa54ff53a5f1d36f1ULL;
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ctx->state[4] = 0x510e527fade682d1ULL;
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ctx->state[5] = 0x9b05688c2b3e6c1fULL;
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ctx->state[6] = 0x1f83d9abfb41bd6bULL;
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ctx->state[7] = 0x5be0cd19137e2179ULL;
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}
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/* Add bytes into the hash */
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void
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SHA512_Update(SHA512_CTX * ctx, const void *in, size_t len)
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{
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uint64_t bitlen[2];
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uint64_t r;
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const unsigned char *src = in;
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/* Number of bytes left in the buffer from previous updates */
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r = (ctx->count[1] >> 3) & 0x7f;
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/* Convert the length into a number of bits */
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bitlen[1] = ((uint64_t)len) << 3;
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bitlen[0] = ((uint64_t)len) >> 61;
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/* Update number of bits */
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if ((ctx->count[1] += bitlen[1]) < bitlen[1])
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ctx->count[0]++;
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ctx->count[0] += bitlen[0];
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/* Handle the case where we don't need to perform any transforms */
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if (len < SHA512_BLOCK_LENGTH - r) {
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memcpy(&ctx->buf[r], src, len);
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return;
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}
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/* Finish the current block */
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memcpy(&ctx->buf[r], src, SHA512_BLOCK_LENGTH - r);
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SHA512_Transform(ctx->state, ctx->buf);
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src += SHA512_BLOCK_LENGTH - r;
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len -= SHA512_BLOCK_LENGTH - r;
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/* Perform complete blocks */
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while (len >= SHA512_BLOCK_LENGTH) {
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SHA512_Transform(ctx->state, src);
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src += SHA512_BLOCK_LENGTH;
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len -= SHA512_BLOCK_LENGTH;
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}
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/* Copy left over data into buffer */
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memcpy(ctx->buf, src, len);
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}
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/*
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* SHA-512 finalization. Pads the input data, exports the hash value,
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* and clears the context state.
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*/
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void
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SHA512_Final(unsigned char digest[static SHA512_DIGEST_LENGTH], SHA512_CTX *ctx)
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{
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/* Add padding */
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SHA512_Pad(ctx);
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/* Write the hash */
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be64enc_vect(digest, ctx->state, SHA512_DIGEST_LENGTH);
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/* Clear the context state */
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explicit_bzero(ctx, sizeof (*ctx));
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}
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/* SHA-512t: ******************************************************** */
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/*
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* the SHA512t transforms are identical to SHA512 so reuse the existing function
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*/
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void
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SHA512_224_Init(SHA512_CTX * ctx)
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{
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/* Zero bits processed so far */
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ctx->count[0] = ctx->count[1] = 0;
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/* Magic initialization constants */
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ctx->state[0] = 0x8c3d37c819544da2ULL;
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ctx->state[1] = 0x73e1996689dcd4d6ULL;
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ctx->state[2] = 0x1dfab7ae32ff9c82ULL;
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ctx->state[3] = 0x679dd514582f9fcfULL;
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ctx->state[4] = 0x0f6d2b697bd44da8ULL;
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ctx->state[5] = 0x77e36f7304c48942ULL;
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ctx->state[6] = 0x3f9d85a86a1d36c8ULL;
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ctx->state[7] = 0x1112e6ad91d692a1ULL;
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}
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void
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SHA512_224_Update(SHA512_CTX * ctx, const void *in, size_t len)
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{
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SHA512_Update(ctx, in, len);
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}
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void
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SHA512_224_Final(unsigned char digest[static SHA512_224_DIGEST_LENGTH],
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SHA512_CTX *ctx)
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{
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/* Add padding */
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SHA512_Pad(ctx);
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/* Write the hash */
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be64enc_vect(digest, ctx->state, SHA512_224_DIGEST_LENGTH);
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/* Clear the context state */
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explicit_bzero(ctx, sizeof (*ctx));
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}
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void
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SHA512_256_Init(SHA512_CTX * ctx)
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{
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/* Zero bits processed so far */
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ctx->count[0] = ctx->count[1] = 0;
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/* Magic initialization constants */
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ctx->state[0] = 0x22312194fc2bf72cULL;
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ctx->state[1] = 0x9f555fa3c84c64c2ULL;
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ctx->state[2] = 0x2393b86b6f53b151ULL;
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ctx->state[3] = 0x963877195940eabdULL;
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ctx->state[4] = 0x96283ee2a88effe3ULL;
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ctx->state[5] = 0xbe5e1e2553863992ULL;
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ctx->state[6] = 0x2b0199fc2c85b8aaULL;
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ctx->state[7] = 0x0eb72ddc81c52ca2ULL;
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}
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void
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SHA512_256_Update(SHA512_CTX * ctx, const void *in, size_t len)
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{
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SHA512_Update(ctx, in, len);
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}
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void
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SHA512_256_Final(unsigned char digest[static SHA512_256_DIGEST_LENGTH],
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SHA512_CTX * ctx)
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{
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/* Add padding */
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SHA512_Pad(ctx);
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/* Write the hash */
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be64enc_vect(digest, ctx->state, SHA512_256_DIGEST_LENGTH);
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/* Clear the context state */
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explicit_bzero(ctx, sizeof (*ctx));
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}
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/* ** SHA-384: ******************************************************** */
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/*
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* the SHA384 and SHA512 transforms are identical, so SHA384 is skipped
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*/
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/* SHA-384 initialization. Begins a SHA-384 operation. */
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void
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SHA384_Init(SHA384_CTX * ctx)
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{
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/* Zero bits processed so far */
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ctx->count[0] = ctx->count[1] = 0;
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/* Magic initialization constants */
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ctx->state[0] = 0xcbbb9d5dc1059ed8ULL;
|
|
ctx->state[1] = 0x629a292a367cd507ULL;
|
|
ctx->state[2] = 0x9159015a3070dd17ULL;
|
|
ctx->state[3] = 0x152fecd8f70e5939ULL;
|
|
ctx->state[4] = 0x67332667ffc00b31ULL;
|
|
ctx->state[5] = 0x8eb44a8768581511ULL;
|
|
ctx->state[6] = 0xdb0c2e0d64f98fa7ULL;
|
|
ctx->state[7] = 0x47b5481dbefa4fa4ULL;
|
|
}
|
|
|
|
/* Add bytes into the SHA-384 hash */
|
|
void
|
|
SHA384_Update(SHA384_CTX * ctx, const void *in, size_t len)
|
|
{
|
|
|
|
SHA512_Update((SHA512_CTX *)ctx, in, len);
|
|
}
|
|
|
|
/*
|
|
* SHA-384 finalization. Pads the input data, exports the hash value,
|
|
* and clears the context state.
|
|
*/
|
|
void
|
|
SHA384_Final(unsigned char digest[static SHA384_DIGEST_LENGTH], SHA384_CTX *ctx)
|
|
{
|
|
|
|
/* Add padding */
|
|
SHA512_Pad((SHA512_CTX *)ctx);
|
|
|
|
/* Write the hash */
|
|
be64enc_vect(digest, ctx->state, SHA384_DIGEST_LENGTH);
|
|
|
|
/* Clear the context state */
|
|
explicit_bzero(ctx, sizeof (*ctx));
|
|
}
|
|
|
|
#if 0
|
|
/*
|
|
* When building libmd, provide weak references. Note: this is not
|
|
* activated in the context of compiling these sources for internal
|
|
* use in libcrypt.
|
|
*/
|
|
#undef SHA512_Init
|
|
__weak_reference(_libmd_SHA512_Init, SHA512_Init);
|
|
#undef SHA512_Update
|
|
__weak_reference(_libmd_SHA512_Update, SHA512_Update);
|
|
#undef SHA512_Final
|
|
__weak_reference(_libmd_SHA512_Final, SHA512_Final);
|
|
#undef SHA512_Transform
|
|
__weak_reference(_libmd_SHA512_Transform, SHA512_Transform);
|
|
|
|
#undef SHA512_224_Init
|
|
__weak_reference(_libmd_SHA512_224_Init, SHA512_224_Init);
|
|
#undef SHA512_224_Update
|
|
__weak_reference(_libmd_SHA512_224_Update, SHA512_224_Update);
|
|
#undef SHA512_224_Final
|
|
__weak_reference(_libmd_SHA512_224_Final, SHA512_224_Final);
|
|
|
|
#undef SHA512_256_Init
|
|
__weak_reference(_libmd_SHA512_256_Init, SHA512_256_Init);
|
|
#undef SHA512_256_Update
|
|
__weak_reference(_libmd_SHA512_256_Update, SHA512_256_Update);
|
|
#undef SHA512_256_Final
|
|
__weak_reference(_libmd_SHA512_256_Final, SHA512_256_Final);
|
|
|
|
#undef SHA384_Init
|
|
__weak_reference(_libmd_SHA384_Init, SHA384_Init);
|
|
#undef SHA384_Update
|
|
__weak_reference(_libmd_SHA384_Update, SHA384_Update);
|
|
#undef SHA384_Final
|
|
__weak_reference(_libmd_SHA384_Final, SHA384_Final);
|
|
#endif
|