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
  58
  59 #include <corecrypto/ccsha1.h>
  60 #include <corecrypto/cc_priv.h>
  61 #include <corecrypto/ccdigest_priv.h>
  62
  63
  64 #ifndef SHA_LONG_LOG2
  65 #define SHA_LONG_LOG2   2       /* default to 32 bits */
  66 #endif
  67
  68
  69 #define ROTATE(b, n) CC_ROLc(b, n)
  70
  71 #define Xupdate(a,ix,ia,ib,ic,id)       ( (a)=(ia^ib^ic^id),    \
  72                                           ix=(a)=ROTATE((a),1)  \
  73                                         )
  74
  75 #define MD32_REG_T uint32_t
  76
  77 #define HOST_c2l(data, l) CC_LOAD32_BE(l, data); data+=4;
  78
  79 #define K_00_19 0x5a827999
  80 #define K_20_39 0x6ed9eba1
  81 #define K_40_59 0x8f1bbcdc
  82 #define K_60_79 0xca62c1d6
  83
  84 /* As  pointed out by Wei Dai <weidai@eskimo.com>, F() below can be
  85  * simplified to the code in F_00_19.  Wei attributes these optimisations
  86  * to Peter Gutmann's SHS code, and he attributes it to Rich Schroeppel.
  87  * #define F(x,y,z) (((x) & (y))  |  ((~(x)) & (z)))
  88  * I've just become aware of another tweak to be made, again from Wei Dai,
  89  * in F_40_59, (x&a)|(y&a) -> (x|y)&a
  90  */
  91 #define F_00_19(b,c,d)  ((((c) ^ (d)) & (b)) ^ (d))
  92 #define F_20_39(b,c,d)  ((b) ^ (c) ^ (d))
  93 #define F_40_59(b,c,d)  (((b) & (c)) | (((b)|(c)) & (d)))
  94 #define F_60_79(b,c,d)  F_20_39(b,c,d)
  95
  96 #define BODY_00_15(i,a,b,c,d,e,f,xi) \
  97         (f)=xi+(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
  98         (b)=ROTATE((b),30);
  99
 100 #define BODY_16_19(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
 101         Xupdate(f,xi,xa,xb,xc,xd); \
 102         (f)+=(e)+K_00_19+ROTATE((a),5)+F_00_19((b),(c),(d)); \
 103         (b)=ROTATE((b),30);
 104
 105 #define BODY_20_31(i,a,b,c,d,e,f,xi,xa,xb,xc,xd) \
 106         Xupdate(f,xi,xa,xb,xc,xd); \
 107         (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
 108         (b)=ROTATE((b),30);
 109
 110 #define BODY_32_39(i,a,b,c,d,e,f,xa,xb,xc,xd) \
 111         Xupdate(f,xa,xa,xb,xc,xd); \
 112         (f)+=(e)+K_20_39+ROTATE((a),5)+F_20_39((b),(c),(d)); \
 113         (b)=ROTATE((b),30);
 114
 115 #define BODY_40_59(i,a,b,c,d,e,f,xa,xb,xc,xd) \
 116         Xupdate(f,xa,xa,xb,xc,xd); \
 117         (f)+=(e)+K_40_59+ROTATE((a),5)+F_40_59((b),(c),(d)); \
 118         (b)=ROTATE((b),30);
 119
 120 #define BODY_60_79(i,a,b,c,d,e,f,xa,xb,xc,xd) \
 121         Xupdate(f,xa,xa,xb,xc,xd); \
 122         (f)=xa+(e)+K_60_79+ROTATE((a),5)+F_60_79((b),(c),(d)); \
 123         (b)=ROTATE((b),30);
 124
 125 #ifdef X
 126 #undef X
 127 #endif
 128
 129 #ifndef MD32_XARRAY
 130   /*
 131    * Originally X was an array. As it's automatic it's natural
 132    * to expect RISC compiler to accomodate at least part of it in
 133    * the register bank, isn't it? Unfortunately not all compilers
 134    * "find" this expectation reasonable:-( On order to make such
 135    * compilers generate better code I replace X[] with a bunch of
 136    * X0, X1, etc. See the function body below...
 137    *                                    <appro@fy.chalmers.se>
 138    */
 139 # define X(i)   XX##i
 140 #else
 141   /*
 142    * However! Some compilers (most notably HP C) get overwhelmed by
 143    * that many local variables so that we have to have the way to
 144    * fall down to the original behavior.
 145    */
 146 # define X(i)   XX[i]
 147 #endif
 148
 149 static void sha1_compress(ccdigest_state_t s, size_t num, const void *buf)
 150 {
 151         const unsigned char *data=buf;
 152     register uint32_t A,B,C,D,E,T,l;
 153 #ifndef MD32_XARRAY
 154         uint32_t    XX0, XX1, XX2, XX3, XX4, XX5, XX6, XX7,
 155                                 XX8, XX9,XX10,XX11,XX12,XX13,XX14,XX15;
 156 #else
 157         uint32_t    XX[16];
 158 #endif
 159     uint32_t *state=ccdigest_u32(s);
 160
 161         A=state[0];
 162         B=state[1];
 163         C=state[2];
 164         D=state[3];
 165         E=state[4];
 166
 167         for (;;)
 168                 {
 169
 170         HOST_c2l(data,l); X( 0)=l;              HOST_c2l(data,l); X( 1)=l;
 171         BODY_00_15( 0,A,B,C,D,E,T,X( 0));       HOST_c2l(data,l); X( 2)=l;
 172         BODY_00_15( 1,T,A,B,C,D,E,X( 1));       HOST_c2l(data,l); X( 3)=l;
 173         BODY_00_15( 2,E,T,A,B,C,D,X( 2));       HOST_c2l(data,l); X( 4)=l;
 174         BODY_00_15( 3,D,E,T,A,B,C,X( 3));       HOST_c2l(data,l); X( 5)=l;
 175         BODY_00_15( 4,C,D,E,T,A,B,X( 4));       HOST_c2l(data,l); X( 6)=l;
 176         BODY_00_15( 5,B,C,D,E,T,A,X( 5));       HOST_c2l(data,l); X( 7)=l;
 177         BODY_00_15( 6,A,B,C,D,E,T,X( 6));       HOST_c2l(data,l); X( 8)=l;
 178         BODY_00_15( 7,T,A,B,C,D,E,X( 7));       HOST_c2l(data,l); X( 9)=l;
 179         BODY_00_15( 8,E,T,A,B,C,D,X( 8));       HOST_c2l(data,l); X(10)=l;
 180         BODY_00_15( 9,D,E,T,A,B,C,X( 9));       HOST_c2l(data,l); X(11)=l;
 181         BODY_00_15(10,C,D,E,T,A,B,X(10));       HOST_c2l(data,l); X(12)=l;
 182         BODY_00_15(11,B,C,D,E,T,A,X(11));       HOST_c2l(data,l); X(13)=l;
 183         BODY_00_15(12,A,B,C,D,E,T,X(12));       HOST_c2l(data,l); X(14)=l;
 184         BODY_00_15(13,T,A,B,C,D,E,X(13));       HOST_c2l(data,l); X(15)=l;
 185         BODY_00_15(14,E,T,A,B,C,D,X(14));
 186         BODY_00_15(15,D,E,T,A,B,C,X(15));
 187
 188         BODY_16_19(16,C,D,E,T,A,B,X( 0),X( 0),X( 2),X( 8),X(13));
 189         BODY_16_19(17,B,C,D,E,T,A,X( 1),X( 1),X( 3),X( 9),X(14));
 190         BODY_16_19(18,A,B,C,D,E,T,X( 2),X( 2),X( 4),X(10),X(15));
 191         BODY_16_19(19,T,A,B,C,D,E,X( 3),X( 3),X( 5),X(11),X( 0));
 192
 193         BODY_20_31(20,E,T,A,B,C,D,X( 4),X( 4),X( 6),X(12),X( 1));
 194         BODY_20_31(21,D,E,T,A,B,C,X( 5),X( 5),X( 7),X(13),X( 2));
 195         BODY_20_31(22,C,D,E,T,A,B,X( 6),X( 6),X( 8),X(14),X( 3));
 196         BODY_20_31(23,B,C,D,E,T,A,X( 7),X( 7),X( 9),X(15),X( 4));
 197         BODY_20_31(24,A,B,C,D,E,T,X( 8),X( 8),X(10),X( 0),X( 5));
 198         BODY_20_31(25,T,A,B,C,D,E,X( 9),X( 9),X(11),X( 1),X( 6));
 199         BODY_20_31(26,E,T,A,B,C,D,X(10),X(10),X(12),X( 2),X( 7));
 200         BODY_20_31(27,D,E,T,A,B,C,X(11),X(11),X(13),X( 3),X( 8));
 201         BODY_20_31(28,C,D,E,T,A,B,X(12),X(12),X(14),X( 4),X( 9));
 202         BODY_20_31(29,B,C,D,E,T,A,X(13),X(13),X(15),X( 5),X(10));
 203         BODY_20_31(30,A,B,C,D,E,T,X(14),X(14),X( 0),X( 6),X(11));
 204         BODY_20_31(31,T,A,B,C,D,E,X(15),X(15),X( 1),X( 7),X(12));
 205
 206         BODY_32_39(32,E,T,A,B,C,D,X( 0),X( 2),X( 8),X(13));
 207         BODY_32_39(33,D,E,T,A,B,C,X( 1),X( 3),X( 9),X(14));
 208         BODY_32_39(34,C,D,E,T,A,B,X( 2),X( 4),X(10),X(15));
 209         BODY_32_39(35,B,C,D,E,T,A,X( 3),X( 5),X(11),X( 0));
 210         BODY_32_39(36,A,B,C,D,E,T,X( 4),X( 6),X(12),X( 1));
 211         BODY_32_39(37,T,A,B,C,D,E,X( 5),X( 7),X(13),X( 2));
 212         BODY_32_39(38,E,T,A,B,C,D,X( 6),X( 8),X(14),X( 3));
 213         BODY_32_39(39,D,E,T,A,B,C,X( 7),X( 9),X(15),X( 4));
 214
 215         BODY_40_59(40,C,D,E,T,A,B,X( 8),X(10),X( 0),X( 5));
 216         BODY_40_59(41,B,C,D,E,T,A,X( 9),X(11),X( 1),X( 6));
 217         BODY_40_59(42,A,B,C,D,E,T,X(10),X(12),X( 2),X( 7));
 218         BODY_40_59(43,T,A,B,C,D,E,X(11),X(13),X( 3),X( 8));
 219         BODY_40_59(44,E,T,A,B,C,D,X(12),X(14),X( 4),X( 9));
 220         BODY_40_59(45,D,E,T,A,B,C,X(13),X(15),X( 5),X(10));
 221         BODY_40_59(46,C,D,E,T,A,B,X(14),X( 0),X( 6),X(11));
 222         BODY_40_59(47,B,C,D,E,T,A,X(15),X( 1),X( 7),X(12));
 223         BODY_40_59(48,A,B,C,D,E,T,X( 0),X( 2),X( 8),X(13));
 224         BODY_40_59(49,T,A,B,C,D,E,X( 1),X( 3),X( 9),X(14));
 225         BODY_40_59(50,E,T,A,B,C,D,X( 2),X( 4),X(10),X(15));
 226         BODY_40_59(51,D,E,T,A,B,C,X( 3),X( 5),X(11),X( 0));
 227         BODY_40_59(52,C,D,E,T,A,B,X( 4),X( 6),X(12),X( 1));
 228         BODY_40_59(53,B,C,D,E,T,A,X( 5),X( 7),X(13),X( 2));
 229         BODY_40_59(54,A,B,C,D,E,T,X( 6),X( 8),X(14),X( 3));
 230         BODY_40_59(55,T,A,B,C,D,E,X( 7),X( 9),X(15),X( 4));
 231         BODY_40_59(56,E,T,A,B,C,D,X( 8),X(10),X( 0),X( 5));
 232         BODY_40_59(57,D,E,T,A,B,C,X( 9),X(11),X( 1),X( 6));
 233         BODY_40_59(58,C,D,E,T,A,B,X(10),X(12),X( 2),X( 7));
 234         BODY_40_59(59,B,C,D,E,T,A,X(11),X(13),X( 3),X( 8));
 235
 236         BODY_60_79(60,A,B,C,D,E,T,X(12),X(14),X( 4),X( 9));
 237         BODY_60_79(61,T,A,B,C,D,E,X(13),X(15),X( 5),X(10));
 238         BODY_60_79(62,E,T,A,B,C,D,X(14),X( 0),X( 6),X(11));
 239         BODY_60_79(63,D,E,T,A,B,C,X(15),X( 1),X( 7),X(12));
 240         BODY_60_79(64,C,D,E,T,A,B,X( 0),X( 2),X( 8),X(13));
 241         BODY_60_79(65,B,C,D,E,T,A,X( 1),X( 3),X( 9),X(14));
 242         BODY_60_79(66,A,B,C,D,E,T,X( 2),X( 4),X(10),X(15));
 243         BODY_60_79(67,T,A,B,C,D,E,X( 3),X( 5),X(11),X( 0));
 244         BODY_60_79(68,E,T,A,B,C,D,X( 4),X( 6),X(12),X( 1));
 245         BODY_60_79(69,D,E,T,A,B,C,X( 5),X( 7),X(13),X( 2));
 246         BODY_60_79(70,C,D,E,T,A,B,X( 6),X( 8),X(14),X( 3));
 247         BODY_60_79(71,B,C,D,E,T,A,X( 7),X( 9),X(15),X( 4));
 248         BODY_60_79(72,A,B,C,D,E,T,X( 8),X(10),X( 0),X( 5));
 249         BODY_60_79(73,T,A,B,C,D,E,X( 9),X(11),X( 1),X( 6));
 250         BODY_60_79(74,E,T,A,B,C,D,X(10),X(12),X( 2),X( 7));
 251         BODY_60_79(75,D,E,T,A,B,C,X(11),X(13),X( 3),X( 8));
 252         BODY_60_79(76,C,D,E,T,A,B,X(12),X(14),X( 4),X( 9));
 253         BODY_60_79(77,B,C,D,E,T,A,X(13),X(15),X( 5),X(10));
 254         BODY_60_79(78,A,B,C,D,E,T,X(14),X( 0),X( 6),X(11));
 255         BODY_60_79(79,T,A,B,C,D,E,X(15),X( 1),X( 7),X(12));
 256
 257         state[0]=(state[0]+E)&0xffffffff;
 258         state[1]=(state[1]+T)&0xffffffff;
 259         state[2]=(state[2]+A)&0xffffffff;
 260         state[3]=(state[3]+B)&0xffffffff;
 261         state[4]=(state[4]+C)&0xffffffff;
 262
 263         if (--num <= 0) break;
 264
 265         A=state[0];
 266         B=state[1];
 267         C=state[2];
 268         D=state[3];
 269         E=state[4];
 270
 271         }
 272 }
 273
 274 const struct ccdigest_info ccsha1_eay_di = {
 275     .output_size = CCSHA1_OUTPUT_SIZE,
 276     .state_size = CCSHA1_STATE_SIZE,
 277     .block_size = CCSHA1_BLOCK_SIZE,
 278     .oid_size = ccoid_sha1_len,
 279     .oid = CC_DIGEST_OID_SHA1,
 280     .initial_state = ccsha1_initial_state,
 281     .compress = sha1_compress,
 282     .final = ccdigest_final_64be,
 283 };