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/*
* Copyright 1995-2020 The OpenSSL Project Authors. All Rights Reserved.
*
* Licensed under the Apache License 2.0 (the "License"). You may not use
* this file except in compliance with the License. You can obtain a copy
* in the file LICENSE in the source distribution or at
* https://www.openssl.org/source/license.html
*/
#include <stdlib.h>
#include <string.h>
#include <openssl/opensslconf.h>
#include <openssl/sha.h>
#include "internal/endian.h"
#define DATA_ORDER_IS_BIG_ENDIAN
#define HASH_LONG SHA_LONG
#define HASH_CTX SHA_CTX
#define HASH_CBLOCK SHA_CBLOCK
#define HASH_MAKE_STRING(c,s) do { \
unsigned long ll; \
ll=(c)->h0; (void)HOST_l2c(ll,(s)); \
ll=(c)->h1; (void)HOST_l2c(ll,(s)); \
ll=(c)->h2; (void)HOST_l2c(ll,(s)); \
ll=(c)->h3; (void)HOST_l2c(ll,(s)); \
ll=(c)->h4; (void)HOST_l2c(ll,(s)); \
} while (0)
#define HASH_UPDATE SHA1_Update
#define HASH_TRANSFORM SHA1_Transform
#define HASH_FINAL SHA1_Final
#define HASH_INIT SHA1_Init
#define HASH_BLOCK_DATA_ORDER sha1_block_data_order
#define Xupdate(a,ix,ia,ib,ic,id) ( (a)=(ia^ib^ic^id), \
ix=(a)=ROTATE((a),1) \
)
#ifndef SHA1_ASM
static void sha1_block_data_order(SHA_CTX *c, const void *p, size_t num);
#else
void sha1_block_data_order(SHA_CTX *c, const void *p, size_t num);
#endif
#include "crypto/md32_common.h"
#define INIT_DATA_h0 0x67452301UL
#define INIT_DATA_h1 0xefcdab89UL
#define INIT_DATA_h2 0x98badcfeUL
#define INIT_DATA_h3 0x10325476UL
#define INIT_DATA_h4 0xc3d2e1f0UL
int HASH_INIT(SHA_CTX *c)
{
memset(c, 0, sizeof(*c));
c->h0 = INIT_DATA_h0;
c->h1 = INIT_DATA_h1;
c->h2 = INIT_DATA_h2;
c->h3 = INIT_DATA_h3;
c->h4 = INIT_DATA_h4;
return 1;
}
#define K_00_19 0x5a827999UL
#define K_20_39 0x6ed9eba1UL
#define K_40_59 0x8f1bbcdcUL
#define K_60_79 0xca62c1d6UL
/*
* As pointed out by Wei Dai, F() below can be simplified to the code in
* F_00_19. Wei attributes these optimizations to Peter Gutmann's SHS code,
* and he attributes it to Rich Schroeppel.
* #define F(x,y,z) (((x) & (y)) | ((~(x)) & (z)))
* I've just become aware of another tweak to be made, again from Wei Dai,
* in F_40_59, (x&a)|(y&a) -> (x|y)&a
*/
#define F_00_19(b,c,d) ((((c) ^ (d)) & (b)) ^ (d))
#define F_20_39(b,c,d) ((b) ^ (c) ^ (d))
#define F_40_59(b,c,d) (((b) & (c)) | (((b)|(c)) & (d)))
#define F_60_79(b,c,d) F_20_39(b,c,d)
#ifndef OPENSSL_SMALL_FOOTPRINT
# define BODY_00_15(i,a,b,c,d,e,f,xi) \
(f)=xi+(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
(b)=ROTATE((b),30);
# define BODY_16_19(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
Xupdate(f,xi,xa,xb,xc,xd); \
(f)+=(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
(b)=ROTATE((b),30);
# define BODY_20_31(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
Xupdate(f,xi,xa,xb,xc,xd); \
(f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
(b)=ROTATE((b),30);
# define BODY_32_39(i,a,b,c,d,e,f,xa,xb,xc,xd) \
Xupdate(f,xa,xa,xb,xc,xd); \
(f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
(b)=ROTATE((b),30);
# define BODY_40_59(i,a,b,c,d,e,f,xa,xb,xc,xd) \
Xupdate(f,xa,xa,xb,xc,xd); \
(f)+=(e)+K_40_59+ROTATE((a),5)+F_40_59((b),(c),(d)); \
(b)=ROTATE((b),30);
# define BODY_60_79(i,a,b,c,d,e,f,xa,xb,xc,xd) \
Xupdate(f,xa,xa,xb,xc,xd); \
(f)=xa+(e)+K_60_79+ROTATE((a),5)+F_60_79((b),(c),(d)); \
(b)=ROTATE((b),30);
# ifdef X
# undef X
# endif
# ifndef MD32_XARRAY
/*
* Originally X was an array. As it's automatic it's natural
* to expect RISC compiler to accommodate at least part of it in
* the register bank, isn't it? Unfortunately not all compilers
* "find" this expectation reasonable:-( On order to make such
* compilers generate better code I replace X[] with a bunch of
* X0, X1, etc. See the function body below...
*/
# define X(i) XX##i
# else
/*
* However! Some compilers (most notably HP C) get overwhelmed by
* that many local variables so that we have to have the way to
* fall down to the original behavior.
*/
# define X(i) XX[i]
# endif
# if !defined(SHA1_ASM)
static void HASH_BLOCK_DATA_ORDER(SHA_CTX *c, const void *p, size_t num)
{
const unsigned char *data = p;
register unsigned MD32_REG_T A, B, C, D, E, T, l;
# ifndef MD32_XARRAY
unsigned MD32_REG_T XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
XX8, XX9, XX10, XX11, XX12, XX13, XX14, XX15;
# else
SHA_LONG XX[16];
# endif
A = c->h0;
B = c->h1;
C = c->h2;
D = c->h3;
E = c->h4;
for (;;) {
DECLARE_IS_ENDIAN;
if (!IS_LITTLE_ENDIAN && sizeof(SHA_LONG) == 4
&& ((size_t)p % 4) == 0) {
const SHA_LONG *W = (const SHA_LONG *)data;
X(0) = W[0];
X(1) = W[1];
BODY_00_15(0, A, B, C, D, E, T, X(0));
X(2) = W[2];
BODY_00_15(1, T, A, B, C, D, E, X(1));
X(3) = W[3];
BODY_00_15(2, E, T, A, B, C, D, X(2));
X(4) = W[4];
BODY_00_15(3, D, E, T, A, B, C, X(3));
X(5) = W[5];
BODY_00_15(4, C, D, E, T, A, B, X(4));
X(6) = W[6];
BODY_00_15(5, B, C, D, E, T, A, X(5));
X(7) = W[7];
BODY_00_15(6, A, B, C, D, E, T, X(6));
X(8) = W[8];
BODY_00_15(7, T, A, B, C, D, E, X(7));
X(9) = W[9];
BODY_00_15(8, E, T, A, B, C, D, X(8));
X(10) = W[10];
BODY_00_15(9, D, E, T, A, B, C, X(9));
X(11) = W[11];
BODY_00_15(10, C, D, E, T, A, B, X(10));
X(12) = W[12];
BODY_00_15(11, B, C, D, E, T, A, X(11));
X(13) = W[13];
BODY_00_15(12, A, B, C, D, E, T, X(12));
X(14) = W[14];
BODY_00_15(13, T, A, B, C, D, E, X(13));
X(15) = W[15];
BODY_00_15(14, E, T, A, B, C, D, X(14));
BODY_00_15(15, D, E, T, A, B, C, X(15));
data += SHA_CBLOCK;
} else {
(void)HOST_c2l(data, l);
X(0) = l;
(void)HOST_c2l(data, l);
X(1) = l;
BODY_00_15(0, A, B, C, D, E, T, X(0));
(void)HOST_c2l(data, l);
X(2) = l;
BODY_00_15(1, T, A, B, C, D, E, X(1));
(void)HOST_c2l(data, l);
X(3) = l;
BODY_00_15(2, E, T, A, B, C, D, X(2));
(void)HOST_c2l(data, l);
X(4) = l;
BODY_00_15(3, D, E, T, A, B, C, X(3));
(void)HOST_c2l(data, l);
X(5) = l;
BODY_00_15(4, C, D, E, T, A, B, X(4));
(void)HOST_c2l(data, l);
X(6) = l;
BODY_00_15(5, B, C, D, E, T, A, X(5));
(void)HOST_c2l(data, l);
X(7
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