/* $OpenBSD: sha1.c,v 1.13 2024/03/26 12:54:22 jsing Exp $ */ /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com) * All rights reserved. * * This package is an SSL implementation written * by Eric Young (eay@cryptsoft.com). * The implementation was written so as to conform with Netscapes SSL. * * This library is free for commercial and non-commercial use as long as * the following conditions are aheared to. The following conditions * apply to all code found in this distribution, be it the RC4, RSA, * lhash, DES, etc., code; not just the SSL code. The SSL documentation * included with this distribution is covered by the same copyright terms * except that the holder is Tim Hudson (tjh@cryptsoft.com). * * Copyright remains Eric Young's, and as such any Copyright notices in * the code are not to be removed. * If this package is used in a product, Eric Young should be given attribution * as the author of the parts of the library used. * This can be in the form of a textual message at program startup or * in documentation (online or textual) provided with the package. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * "This product includes cryptographic software written by * Eric Young (eay@cryptsoft.com)" * The word 'cryptographic' can be left out if the rouines from the library * being used are not cryptographic related :-). * 4. If you include any Windows specific code (or a derivative thereof) from * the apps directory (application code) you must include an acknowledgement: * "This product includes software written by Tim Hudson (tjh@cryptsoft.com)" * * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * * The licence and distribution terms for any publically available version or * derivative of this code cannot be changed. i.e. this code cannot simply be * copied and put under another distribution licence * [including the GNU Public Licence.] */ #include #include #include #include #include #include "crypto_internal.h" #if !defined(OPENSSL_NO_SHA1) && !defined(OPENSSL_NO_SHA) /* Ensure that SHA_LONG and uint32_t are equivalent sizes. */ CTASSERT(sizeof(SHA_LONG) == sizeof(uint32_t)); #define DATA_ORDER_IS_BIG_ENDIAN #define HASH_LONG SHA_LONG #define HASH_CTX SHA_CTX #define HASH_CBLOCK SHA_CBLOCK #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 #endif void sha1_block_data_order(SHA_CTX *c, const void *p, size_t num); #define HASH_NO_UPDATE #define HASH_NO_TRANSFORM #define HASH_NO_FINAL #include "md32_common.h" #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 optimisations * 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) #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); #if !defined(SHA1_ASM) #include static void sha1_block_data_order(SHA_CTX *c, const void *_in, size_t num) { const uint8_t *in = _in; const SHA_LONG *in32; unsigned int A, B, C, D, E, T; unsigned int X0, X1, X2, X3, X4, X5, X6, X7, X8, X9, X10, X11, X12, X13, X14, X15; while (num--) { A = c->h0; B = c->h1; C = c->h2; D = c->h3; E = c->h4; if ((size_t)in % 4 == 0) { /* Input is 32 bit aligned. */ in32 = (const SHA_LONG *)in; X0 = be32toh(in32[0]); X1 = be32toh(in32[1]); X2 = be32toh(in32[2]); X3 = be32toh(in32[3]); X4 = be32toh(in32[4]); X5 = be32toh(in32[5]); X6 = be32toh(in32[6]); X7 = be32toh(in32[7]); X8 = be32toh(in32[8]); X9 = be32toh(in32[9]); X10 = be32toh(in32[10]); X11 = be32toh(in32[11]); X12 = be32toh(in32[12]); X13 = be32toh(in32[13]); X14 = be32toh(in32[14]); X15 = be32toh(in32[15]); } else { /* Input is not 32 bit aligned. */ X0 = crypto_load_be32toh(&in[0 * 4]); X1 = crypto_load_be32toh(&in[1 * 4]); X2 = crypto_load_be32toh(&in[2 * 4]); X3 = crypto_load_be32toh(&in[3 * 4]); X4 = crypto_load_be32toh(&in[4 * 4]); X5 = crypto_load_be32toh(&in[5 * 4]); X6 = crypto_load_be32toh(&in[6 * 4]); X7 = crypto_load_be32toh(&in[7 * 4]); X8 = crypto_load_be32toh(&in[8 * 4]); X9 = crypto_load_be32toh(&in[9 * 4]); X10 = crypto_load_be32toh(&in[10 * 4]); X11 = crypto_load_be32toh(&in[11 * 4]); X12 = crypto_load_be32toh(&in[12 * 4]); X13 = crypto_load_be32toh(&in[13 * 4]); X14 = crypto_load_be32toh(&in[14 * 4]); X15 = crypto_load_be32toh(&in[15 * 4]); } in += SHA_CBLOCK; BODY_00_15( 0, A, B, C, D, E, T, X0); BODY_00_15( 1, T, A, B, C, D, E, X1); BODY_00_15( 2, E, T, A, B, C, D, X2); BODY_00_15( 3, D, E, T, A, B, C, X3); BODY_00_15( 4, C, D, E, T, A, B, X4); BODY_00_15( 5, B, C, D, E, T, A, X5); BODY_00_15( 6, A, B, C, D, E, T, X6); BODY_00_15( 7, T, A, B, C, D, E, X7); BODY_00_15( 8, E, T, A, B, C, D, X8); BODY_00_15( 9, D, E, T, A, B, C, X9); BODY_00_15(10, C, D, E, T, A, B, X10); BODY_00_15(11, B, C, D, E, T, A, X11); BODY_00_15(12, A, B, C, D, E, T, X12); BODY_00_15(13, T, A, B, C, D, E, X13); BODY_00_15(14, E, T, A, B, C, D, X14); BODY_00_15(15, D, E, T, A, B, C, X15); BODY_16_19(16, C, D, E, T, A, B, X0, X0, X2, X8, X13); BODY_16_19(17, B, C, D, E, T, A, X1, X1, X3, X9, X14); BODY_16_19(18, A, B, C, D, E, T, X2, X2, X4, X10, X15); BODY_16_19(19, T, A, B, C, D, E, X3, X3, X5, X11, X0); BODY_20_31(20, E, T, A, B, C, D, X4, X4, X6, X12, X1); BODY_20_31(21, D, E, T, A, B, C, X5, X5, X7, X13, X2); BODY_20_31(22, C, D, E, T, A, B, X6, X6, X8, X14, X3); BODY_20_31(23, B, C, D, E, T, A, X7, X7, X9, X15, X4); BODY_20_31(24, A, B, C, D, E, T, X8, X8, X10, X0, X5); BODY_20_31(25, T, A, B, C, D, E, X9, X9, X11, X1, X6); BODY_20_31(26, E, T, A, B, C, D, X10, X10, X12, X2, X7); BODY_20_31(27, D, E, T, A, B, C, X11, X11, X13, X3, X8); BODY_20_31(28, C, D, E, T, A, B, X12, X12, X14, X4, X9); BODY_20_31(29, B, C, D, E, T, A, X13, X13, X15, X5, X10); BODY_20_31(30, A, B, C, D, E, T, X14, X14, X0, X6, X11); BODY_20_31(31, T, A, B, C, D, E, X15, X15, X1, X7, X12); BODY_32_39(32, E, T, A, B, C, D, X0, X2, X8, X13); BODY_32_39(33, D, E, T, A, B, C, X1, X3, X9, X14); BODY_32_39(34, C, D, E, T, A, B, X2, X4, X10, X15); BODY_32_39(35, B, C, D, E, T, A, X3, X5, X11, X0); BODY_32_39(36, A, B, C, D, E, T, X4, X6, X12, X1); BODY_32_39(37, T, A, B, C, D, E, X5, X7, X13, X2); BODY_32_39(38, E, T, A, B, C, D, X6, X8, X14, X3); BODY_32_39(39, D, E, T, A, B, C, X7, X9, X15, X4); BODY_40_59(40, C, D, E, T, A, B, X8, X10, X0, X5); BODY_40_59(41, B, C, D, E, T, A, X9, X11, X1, X6); BODY_40_59(42, A, B, C, D, E, T, X10, X12, X2, X7); BODY_40_59(43, T, A, B, C, D, E, X11, X13, X3, X8); BODY_40_59(44, E, T, A, B, C, D, X12, X14, X4, X9); BODY_40_59(45, D, E, T, A, B, C, X13, X15, X5, X10); BODY_40_59(46, C, D, E, T, A, B, X14, X0, X6, X11); BODY_40_59(47, B, C, D, E, T, A, X15, X1, X7, X12); BODY_40_59(48, A, B, C, D, E, T, X0, X2, X8, X13); BODY_40_59(49, T, A, B, C, D, E, X1, X3, X9, X14); BODY_40_59(50, E, T, A, B, C, D, X2, X4, X10, X15); BODY_40_59(51, D, E, T, A, B, C, X3, X5, X11, X0); BODY_40_59(52, C, D, E, T, A, B, X4, X6, X12, X1); BODY_40_59(53, B, C, D, E, T, A, X5, X7, X13, X2); BODY_40_59(54, A, B, C, D, E, T, X6, X8, X14, X3); BODY_40_59(55, T, A, B, C, D, E, X7, X9, X15, X4); BODY_40_59(56, E, T, A, B, C, D, X8, X10, X0, X5); BODY_40_59(57, D, E, T, A, B, C, X9, X11, X1, X6); BODY_40_59(58, C, D, E, T, A, B, X10, X12, X2, X7); BODY_40_59(59, B, C, D, E, T, A, X11, X13, X3, X8); BODY_60_79(60, A, B, C, D, E, T, X12, X14, X4, X9); BODY_60_79(61, T, A, B, C, D, E, X13, X15, X5, X10); BODY_60_79(62, E, T, A, B, C, D, X14, X0, X6, X11); BODY_60_79(63, D, E, T, A, B, C, X15, X1, X7, X12); BODY_60_79(64, C, D, E, T, A, B, X0, X2, X8, X13); BODY_60_79(65, B, C, D, E, T, A, X1, X3, X9, X14); BODY_60_79(66, A, B, C, D, E, T, X2, X4, X10, X15); BODY_60_79(67, T, A, B, C, D, E, X3, X5, X11, X0); BODY_60_79(68, E, T, A, B, C, D, X4, X6, X12, X1); BODY_60_79(69, D, E, T, A, B, C, X5, X7, X13, X2); BODY_60_79(70, C, D, E, T, A, B, X6, X8, X14, X3); BODY_60_79(71, B, C, D, E, T, A, X7, X9, X15, X4); BODY_60_79(72, A, B, C, D, E, T, X8, X10, X0, X5); BODY_60_79(73, T, A, B, C, D, E, X9, X11, X1, X6); BODY_60_79(74, E, T, A, B, C, D, X10, X12, X2, X7); BODY_60_79(75, D, E, T, A, B, C, X11, X13, X3, X8); BODY_60_79(76, C, D, E, T, A, B, X12, X14, X4, X9); BODY_60_79(77, B, C, D, E, T, A, X13, X15, X5, X10); BODY_60_79(78, A, B, C, D, E, T, X14, X0, X6, X11); BODY_60_79(79, T, A, B, C, D, E, X15, X1, X7, X12); c->h0 = (c->h0 + E)&0xffffffffL; c->h1 = (c->h1 + T)&0xffffffffL; c->h2 = (c->h2 + A)&0xffffffffL; c->h3 = (c->h3 + B)&0xffffffffL; c->h4 = (c->h4 + C)&0xffffffffL; } } #endif int SHA1_Init(SHA_CTX *c) { memset(c, 0, sizeof(*c)); c->h0 = 0x67452301UL; c->h1 = 0xefcdab89UL; c->h2 = 0x98badcfeUL; c->h3 = 0x10325476UL; c->h4 = 0xc3d2e1f0UL; return 1; } LCRYPTO_ALIAS(SHA1_Init); int SHA1_Update(SHA_CTX *c, const void *data_, size_t len) { const unsigned char *data = data_; unsigned char *p; SHA_LONG l; size_t n; if (len == 0) return 1; l = (c->Nl + (((SHA_LONG)len) << 3))&0xffffffffUL; /* 95-05-24 eay Fixed a bug with the overflow handling, thanks to * Wei Dai for pointing it out. */ if (l < c->Nl) /* overflow */ c->Nh++; c->Nh+=(SHA_LONG)(len>>29); /* might cause compiler warning on 16-bit */ c->Nl = l; n = c->num; if (n != 0) { p = (unsigned char *)c->data; if (len >= SHA_CBLOCK || len + n >= SHA_CBLOCK) { memcpy(p + n, data, SHA_CBLOCK - n); sha1_block_data_order(c, p, 1); n = SHA_CBLOCK - n; data += n; len -= n; c->num = 0; memset(p,0,SHA_CBLOCK); /* keep it zeroed */ } else { memcpy(p + n, data, len); c->num += (unsigned int)len; return 1; } } n = len/SHA_CBLOCK; if (n > 0) { sha1_block_data_order(c, data, n); n *= SHA_CBLOCK; data += n; len -= n; } if (len != 0) { p = (unsigned char *)c->data; c->num = (unsigned int)len; memcpy(p, data, len); } return 1; } LCRYPTO_ALIAS(SHA1_Update); void SHA1_Transform(SHA_CTX *c, const unsigned char *data) { sha1_block_data_order(c, data, 1); } LCRYPTO_ALIAS(SHA1_Transform); int SHA1_Final(unsigned char *md, SHA_CTX *c) { unsigned char *p = (unsigned char *)c->data; size_t n = c->num; p[n] = 0x80; /* there is always room for one */ n++; if (n > (SHA_CBLOCK - 8)) { memset(p + n, 0, SHA_CBLOCK - n); n = 0; sha1_block_data_order(c, p, 1); } memset(p + n, 0, SHA_CBLOCK - 8 - n); c->data[SHA_LBLOCK - 2] = htobe32(c->Nh); c->data[SHA_LBLOCK - 1] = htobe32(c->Nl); sha1_block_data_order(c, p, 1); c->num = 0; memset(p, 0, SHA_CBLOCK); crypto_store_htobe32(&md[0 * 4], c->h0); crypto_store_htobe32(&md[1 * 4], c->h1); crypto_store_htobe32(&md[2 * 4], c->h2); crypto_store_htobe32(&md[3 * 4], c->h3); crypto_store_htobe32(&md[4 * 4], c->h4); return 1; } LCRYPTO_ALIAS(SHA1_Final); unsigned char * SHA1(const unsigned char *d, size_t n, unsigned char *md) { SHA_CTX c; static unsigned char m[SHA_DIGEST_LENGTH]; if (md == NULL) md = m; if (!SHA1_Init(&c)) return NULL; SHA1_Update(&c, d, n); SHA1_Final(md, &c); explicit_bzero(&c, sizeof(c)); return (md); } LCRYPTO_ALIAS(SHA1); #endif