osfmk/corecrypto/ccsha1/src/ccsha1_eay.c

   1 /* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
   2  * All rights reserved.
   3  *
   4  * This package is an SSL implementation written
   5  * by Eric Young (eay@cryptsoft.com).
   6  * The implementation was written so as to conform with Netscapes SSL.
   7  *
   8  * This library is free for commercial and non-commercial use as long as
   9  * the following conditions are aheared to.  The following conditions
  10  * apply to all code found in this distribution, be it the RC4, RSA,
  11  * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
  12  * included with this distribution is covered by the same copyright terms
  13  * except that the holder is Tim Hudson (tjh@cryptsoft.com).
  14  *
  15  * Copyright remains Eric Young's, and as such any Copyright notices in
  16  * the code are not to be removed.
  17  * If this package is used in a product, Eric Young should be given attribution
  18  * as the author of the parts of the library used.
  19  * This can be in the form of a textual message at program startup or
  20  * in documentation (online or textual) provided with the package.
  21  *
  22  * Redistribution and use in source and binary forms, with or without
  23  * modification, are permitted provided that the following conditions
  24  * are met:
  25  * 1. Redistributions of source code must retain the copyright
  26  *    notice, this list of conditions and the following disclaimer.
  27  * 2. Redistributions in binary form must reproduce the above copyright
  28  *    notice, this list of conditions and the following disclaimer in the
  29  *    documentation and/or other materials provided with the distribution.
  30  * 3. All advertising materials mentioning features or use of this software
  31  *    must display the following acknowledgement:
  32  *    "This product includes cryptographic software written by
  33  *     Eric Young (eay@cryptsoft.com)"
  34  *    The word 'cryptographic' can be left out if the rouines from the library
  35  *    being used are not cryptographic related :-).
  36  * 4. If you include any Windows specific code (or a derivative thereof) from
  37  *    the apps directory (application code) you must include an acknowledgement:
  38  *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
  39  *
  40  * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
  41  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  42  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  43  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
  44  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  45  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  46  * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
  47  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  48  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  49  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  50  * SUCH DAMAGE.
  51  *
  52  * The licence and distribution terms for any publically available version or
  53  * derivative of this code cannot be changed.  i.e. this code cannot simply be
  54  * copied and put under another distribution licence
  55  * [including the GNU Public Licence.]
  56  *
  57  * @APPLE_OSREFERENCE_LICENSE_HEADER_START@
  58  *
  59  * This file contains Original Code and/or Modifications of Original Code
  60  * as defined in and that are subject to the Apple Public Source License
  61  * Version 2.0 (the 'License'). You may not use this file except in
  62  * compliance with the License. The rights granted to you under the License
  63  * may not be used to create, or enable the creation or redistribution of,
  64  * unlawful or unlicensed copies of an Apple operating system, or to
  65  * circumvent, violate, or enable the circumvention or violation of, any
  66  * terms of an Apple operating system software license agreement.
  67  *
  68  * Please obtain a copy of the License at
  69  * http://www.opensource.apple.com/apsl/ and read it before using this file.
  70  *
  71  * The Original Code and all software distributed under the License are
  72  * distributed on an 'AS IS' basis, WITHOUT WARRANTY OF ANY KIND, EITHER
  73  * EXPRESS OR IMPLIED, AND APPLE HEREBY DISCLAIMS ALL SUCH WARRANTIES,
  74  * INCLUDING WITHOUT LIMITATION, ANY WARRANTIES OF MERCHANTABILITY,
  75  * FITNESS FOR A PARTICULAR PURPOSE, QUIET ENJOYMENT OR NON-INFRINGEMENT.
  76  * Please see the License for the specific language governing rights and
  77  * limitations under the License.
  78  *
  79  * @APPLE_OSREFERENCE_LICENSE_HEADER_END@
  80  */
  81
  82
  83 #include <corecrypto/ccsha1.h>
  84 #include <corecrypto/cc_priv.h>
  85 #include <corecrypto/ccdigest_priv.h>
  86
  87
  88 #ifndef SHA_LONG_LOG2
  89 #define SHA_LONG_LOG2   2       /* default to 32 bits */
  90 #endif
  91
  92
  93 #define ROTATE(b, n) CC_ROLc(b, n)
  94
  95 #define Xupdate(a,ix,ia,ib,ic,id)       ( (a)=(ia^ib^ic^id),    \
  96                                           ix=(a)=ROTATE((a),1)  \
  97                                         )
  98
  99 #define MD32_REG_T uint32_t
 100
 101 #define HOST_c2l(data, l) CC_LOAD32_BE(l, data); data+=4;
 102
 103 #define K_00_19 0x5a827999
 104 #define K_20_39 0x6ed9eba1
 105 #define K_40_59 0x8f1bbcdc
 106 #define K_60_79 0xca62c1d6
 107
 108 /* As  pointed out by Wei Dai <weidai@eskimo.com>, F() below can be
 109  * simplified to the code in F_00_19.  Wei attributes these optimisations
 110  * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
 111  * #define F(x,y,z) (((x) & (y))  |  ((~(x)) & (z)))
 112  * I've just become aware of another tweak to be made, again from Wei Dai,
 113  * in F_40_59, (x&a)|(y&a) -> (x|y)&a
 114  */
 115 #define F_00_19(b,c,d)  ((((c) ^ (d)) & (b)) ^ (d))
 116 #define F_20_39(b,c,d)  ((b) ^ (c) ^ (d))
 117 #define F_40_59(b,c,d)  (((b) & (c)) | (((b)|(c)) & (d)))
 118 #define F_60_79(b,c,d)  F_20_39(b,c,d)
 119
 120 #define BODY_00_15(i,a,b,c,d,e,f,xi) \
 121         (f)=xi+(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
 122         (b)=ROTATE((b),30);
 123
 124 #define BODY_16_19(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
 125         Xupdate(f,xi,xa,xb,xc,xd); \
 126         (f)+=(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
 127         (b)=ROTATE((b),30);
 128
 129 #define BODY_20_31(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
 130         Xupdate(f,xi,xa,xb,xc,xd); \
 131         (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
 132         (b)=ROTATE((b),30);
 133
 134 #define BODY_32_39(i,a,b,c,d,e,f,xa,xb,xc,xd) \
 135         Xupdate(f,xa,xa,xb,xc,xd); \
 136         (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
 137         (b)=ROTATE((b),30);
 138
 139 #define BODY_40_59(i,a,b,c,d,e,f,xa,xb,xc,xd) \
 140         Xupdate(f,xa,xa,xb,xc,xd); \
 141         (f)+=(e)+K_40_59+ROTATE((a),5)+F_40_59((b),(c),(d)); \
 142         (b)=ROTATE((b),30);
 143
 144 #define BODY_60_79(i,a,b,c,d,e,f,xa,xb,xc,xd) \
 145         Xupdate(f,xa,xa,xb,xc,xd); \
 146         (f)=xa+(e)+K_60_79+ROTATE((a),5)+F_60_79((b),(c),(d)); \
 147         (b)=ROTATE((b),30);
 148
 149 #ifdef X
 150 #undef X
 151 #endif
 152
 153 #ifndef MD32_XARRAY
 154   /*
 155    * Originally X was an array. As it's automatic it's natural
 156    * to expect RISC compiler to accomodate at least part of it in
 157    * the register bank, isn't it? Unfortunately not all compilers
 158    * "find" this expectation reasonable:-( On order to make such
 159    * compilers generate better code I replace X[] with a bunch of
 160    * X0, X1, etc. See the function body below...
 161    *                                    <appro@fy.chalmers.se>
 162    */
 163 # define X(i)   XX##i
 164 #else
 165   /*
 166    * However! Some compilers (most notably HP C) get overwhelmed by
 167    * that many local variables so that we have to have the way to
 168    * fall down to the original behavior.
 169    */
 170 # define X(i)   XX[i]
 171 #endif
 172
 173 static void sha1_compress(ccdigest_state_t s, size_t num, const void *buf)
 174 {
 175         const unsigned char *data=buf;
 176     register uint32_t A,B,C,D,E,T,l;
 177 #ifndef MD32_XARRAY
 178         uint32_t    XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
 179                                 XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
 180 #else
 181         uint32_t    XX[16];
 182 #endif
 183     uint32_t *state=ccdigest_u32(s);
 184
 185         A=state[0];
 186         B=state[1];
 187         C=state[2];
 188         D=state[3];
 189         E=state[4];
 190
 191         for (;;)
 192                 {
 193
 194         HOST_c2l(data,l); X( 0)=l;              HOST_c2l(data,l); X( 1)=l;
 195         BODY_00_15( 0,A,B,C,D,E,T,X( 0));       HOST_c2l(data,l); X( 2)=l;
 196         BODY_00_15( 1,T,A,B,C,D,E,X( 1));       HOST_c2l(data,l); X( 3)=l;
 197         BODY_00_15( 2,E,T,A,B,C,D,X( 2));       HOST_c2l(data,l); X( 4)=l;
 198         BODY_00_15( 3,D,E,T,A,B,C,X( 3));       HOST_c2l(data,l); X( 5)=l;
 199         BODY_00_15( 4,C,D,E,T,A,B,X( 4));       HOST_c2l(data,l); X( 6)=l;
 200         BODY_00_15( 5,B,C,D,E,T,A,X( 5));       HOST_c2l(data,l); X( 7)=l;
 201         BODY_00_15( 6,A,B,C,D,E,T,X( 6));       HOST_c2l(data,l); X( 8)=l;
 202         BODY_00_15( 7,T,A,B,C,D,E,X( 7));       HOST_c2l(data,l); X( 9)=l;
 203         BODY_00_15( 8,E,T,A,B,C,D,X( 8));       HOST_c2l(data,l); X(10)=l;
 204         BODY_00_15( 9,D,E,T,A,B,C,X( 9));       HOST_c2l(data,l); X(11)=l;
 205         BODY_00_15(10,C,D,E,T,A,B,X(10));       HOST_c2l(data,l); X(12)=l;
 206         BODY_00_15(11,B,C,D,E,T,A,X(11));       HOST_c2l(data,l); X(13)=l;
 207         BODY_00_15(12,A,B,C,D,E,T,X(12));       HOST_c2l(data,l); X(14)=l;
 208         BODY_00_15(13,T,A,B,C,D,E,X(13));       HOST_c2l(data,l); X(15)=l;
 209         BODY_00_15(14,E,T,A,B,C,D,X(14));
 210         BODY_00_15(15,D,E,T,A,B,C,X(15));
 211
 212         BODY_16_19(16,C,D,E,T,A,B,X( 0),X( 0),X( 2),X( 8),X(13));
 213         BODY_16_19(17,B,C,D,E,T,A,X( 1),X( 1),X( 3),X( 9),X(14));
 214         BODY_16_19(18,A,B,C,D,E,T,X( 2),X( 2),X( 4),X(10),X(15));
 215         BODY_16_19(19,T,A,B,C,D,E,X( 3),X( 3),X( 5),X(11),X( 0));
 216
 217         BODY_20_31(20,E,T,A,B,C,D,X( 4),X( 4),X( 6),X(12),X( 1));
 218         BODY_20_31(21,D,E,T,A,B,C,X( 5),X( 5),X( 7),X(13),X( 2));
 219         BODY_20_31(22,C,D,E,T,A,B,X( 6),X( 6),X( 8),X(14),X( 3));
 220         BODY_20_31(23,B,C,D,E,T,A,X( 7),X( 7),X( 9),X(15),X( 4));
 221         BODY_20_31(24,A,B,C,D,E,T,X( 8),X( 8),X(10),X( 0),X( 5));
 222         BODY_20_31(25,T,A,B,C,D,E,X( 9),X( 9),X(11),X( 1),X( 6));
 223         BODY_20_31(26,E,T,A,B,C,D,X(10),X(10),X(12),X( 2),X( 7));
 224         BODY_20_31(27,D,E,T,A,B,C,X(11),X(11),X(13),X( 3),X( 8));
 225         BODY_20_31(28,C,D,E,T,A,B,X(12),X(12),X(14),X( 4),X( 9));
 226         BODY_20_31(29,B,C,D,E,T,A,X(13),X(13),X(15),X( 5),X(10));
 227         BODY_20_31(30,A,B,C,D,E,T,X(14),X(14),X( 0),X( 6),X(11));
 228         BODY_20_31(31,T,A,B,C,D,E,X(15),X(15),X( 1),X( 7),X(12));
 229
 230         BODY_32_39(32,E,T,A,B,C,D,X( 0),X( 2),X( 8),X(13));
 231         BODY_32_39(33,D,E,T,A,B,C,X( 1),X( 3),X( 9),X(14));
 232         BODY_32_39(34,C,D,E,T,A,B,X( 2),X( 4),X(10),X(15));
 233         BODY_32_39(35,B,C,D,E,T,A,X( 3),X( 5),X(11),X( 0));
 234         BODY_32_39(36,A,B,C,D,E,T,X( 4),X( 6),X(12),X( 1));
 235         BODY_32_39(37,T,A,B,C,D,E,X( 5),X( 7),X(13),X( 2));
 236         BODY_32_39(38,E,T,A,B,C,D,X( 6),X( 8),X(14),X( 3));
 237         BODY_32_39(39,D,E,T,A,B,C,X( 7),X( 9),X(15),X( 4));
 238
 239         BODY_40_59(40,C,D,E,T,A,B,X( 8),X(10),X( 0),X( 5));
 240         BODY_40_59(41,B,C,D,E,T,A,X( 9),X(11),X( 1),X( 6));
 241         BODY_40_59(42,A,B,C,D,E,T,X(10),X(12),X( 2),X( 7));
 242         BODY_40_59(43,T,A,B,C,D,E,X(11),X(13),X( 3),X( 8));
 243         BODY_40_59(44,E,T,A,B,C,D,X(12),X(14),X( 4),X( 9));
 244         BODY_40_59(45,D,E,T,A,B,C,X(13),X(15),X( 5),X(10));
 245         BODY_40_59(46,C,D,E,T,A,B,X(14),X( 0),X( 6),X(11));
 246         BODY_40_59(47,B,C,D,E,T,A,X(15),X( 1),X( 7),X(12));
 247         BODY_40_59(48,A,B,C,D,E,T,X( 0),X( 2),X( 8),X(13));
 248         BODY_40_59(49,T,A,B,C,D,E,X( 1),X( 3),X( 9),X(14));
 249         BODY_40_59(50,E,T,A,B,C,D,X( 2),X( 4),X(10),X(15));
 250         BODY_40_59(51,D,E,T,A,B,C,X( 3),X( 5),X(11),X( 0));
 251         BODY_40_59(52,C,D,E,T,A,B,X( 4),X( 6),X(12),X( 1));
 252         BODY_40_59(53,B,C,D,E,T,A,X( 5),X( 7),X(13),X( 2));
 253         BODY_40_59(54,A,B,C,D,E,T,X( 6),X( 8),X(14),X( 3));
 254         BODY_40_59(55,T,A,B,C,D,E,X( 7),X( 9),X(15),X( 4));
 255         BODY_40_59(56,E,T,A,B,C,D,X( 8),X(10),X( 0),X( 5));
 256         BODY_40_59(57,D,E,T,A,B,C,X( 9),X(11),X( 1),X( 6));
 257         BODY_40_59(58,C,D,E,T,A,B,X(10),X(12),X( 2),X( 7));
 258         BODY_40_59(59,B,C,D,E,T,A,X(11),X(13),X( 3),X( 8));
 259
 260         BODY_60_79(60,A,B,C,D,E,T,X(12),X(14),X( 4),X( 9));
 261         BODY_60_79(61,T,A,B,C,D,E,X(13),X(15),X( 5),X(10));
 262         BODY_60_79(62,E,T,A,B,C,D,X(14),X( 0),X( 6),X(11));
 263         BODY_60_79(63,D,E,T,A,B,C,X(15),X( 1),X( 7),X(12));
 264         BODY_60_79(64,C,D,E,T,A,B,X( 0),X( 2),X( 8),X(13));
 265         BODY_60_79(65,B,C,D,E,T,A,X( 1),X( 3),X( 9),X(14));
 266         BODY_60_79(66,A,B,C,D,E,T,X( 2),X( 4),X(10),X(15));
 267         BODY_60_79(67,T,A,B,C,D,E,X( 3),X( 5),X(11),X( 0));
 268         BODY_60_79(68,E,T,A,B,C,D,X( 4),X( 6),X(12),X( 1));
 269         BODY_60_79(69,D,E,T,A,B,C,X( 5),X( 7),X(13),X( 2));
 270         BODY_60_79(70,C,D,E,T,A,B,X( 6),X( 8),X(14),X( 3));
 271         BODY_60_79(71,B,C,D,E,T,A,X( 7),X( 9),X(15),X( 4));
 272         BODY_60_79(72,A,B,C,D,E,T,X( 8),X(10),X( 0),X( 5));
 273         BODY_60_79(73,T,A,B,C,D,E,X( 9),X(11),X( 1),X( 6));
 274         BODY_60_79(74,E,T,A,B,C,D,X(10),X(12),X( 2),X( 7));
 275         BODY_60_79(75,D,E,T,A,B,C,X(11),X(13),X( 3),X( 8));
 276         BODY_60_79(76,C,D,E,T,A,B,X(12),X(14),X( 4),X( 9));
 277         BODY_60_79(77,B,C,D,E,T,A,X(13),X(15),X( 5),X(10));
 278         BODY_60_79(78,A,B,C,D,E,T,X(14),X( 0),X( 6),X(11));
 279         BODY_60_79(79,T,A,B,C,D,E,X(15),X( 1),X( 7),X(12));
 280
 281         state[0]=(state[0]+E)&0xffffffff;
 282         state[1]=(state[1]+T)&0xffffffff;
 283         state[2]=(state[2]+A)&0xffffffff;
 284         state[3]=(state[3]+B)&0xffffffff;
 285         state[4]=(state[4]+C)&0xffffffff;
 286
 287         if (--num <= 0) break;
 288
 289         A=state[0];
 290         B=state[1];
 291         C=state[2];
 292         D=state[3];
 293         E=state[4];
 294
 295         }
 296 }
 297
 298 const struct ccdigest_info ccsha1_eay_di = {
 299     .output_size = CCSHA1_OUTPUT_SIZE,
 300     .state_size = CCSHA1_STATE_SIZE,
 301     .block_size = CCSHA1_BLOCK_SIZE,
 302     .oid_size = ccoid_sha1_len,
 303     .oid = CC_DIGEST_OID_SHA1,
 304     .initial_state = ccsha1_initial_state,
 305     .compress = sha1_compress,
 306     .final = ccdigest_final_64be,
 307 };