1/* 2 * rfc1321 requires that I include this. The code is new. The constants 3 * all come from the rfc (hence the copyright). We trade a table for the 4 * macros in rfc. The total size is a lot less. -- presotto 5 * 6 * Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All 7 * rights reserved. 8 * 9 * License to copy and use this software is granted provided that it 10 * is identified as the "RSA Data Security, Inc. MD5 Message-Digest 11 * Algorithm" in all material mentioning or referencing this software 12 * or this function. 13 * 14 * License is also granted to make and use derivative works provided 15 * that such works are identified as "derived from the RSA Data 16 * Security, Inc. MD5 Message-Digest Algorithm" in all material 17 * mentioning or referencing the derived work. 18 * 19 * RSA Data Security, Inc. makes no representations concerning either 20 * the merchantability of this software or the suitability of this 21 * software forany particular purpose. It is provided "as is" 22 * without express or implied warranty of any kind. 23 * These notices must be retained in any copies of any part of this 24 * documentation and/or software. 25 */ 26#define S11 7 27#define S12 12 28#define S13 17 29#define S14 22 30 31#define S21 5 32#define S22 9 33#define S23 14 34#define S24 20 35 36#define S31 4 37#define S32 11 38#define S33 16 39#define S34 23 40 41#define S41 6 42#define S42 10 43#define S43 15 44#define S44 21 45 46#define PAYME(x) $##x 47 48/* 49 * SI is data 50 * a += FN(B,C,D); 51 * a += x[sh] + t[sh]; 52 * a = (a << S11) | (a >> (32 - S11)); 53 * a += b; 54 */ 55 56#define BODY1(off,V,FN,SH,A,B,C,D)\ 57 FN(B,C,D)\ 58 leal V(A, %edi, 1), A;\ 59 addl off(%ebp), A;\ 60 roll PAYME(SH), A;\ 61 addl B, A;\ 62 63#define BODY(off,V,FN,SH,A,B,C,D)\ 64 FN(B,C,D)\ 65 leal V(A, %edi, 1), A;\ 66 addl (off)(%ebp), A;\ 67 roll PAYME(SH), A;\ 68 addl B,A;\ 69 70/* 71 * fn1 = ((c ^ d) & b) ^ d 72 */ 73#define FN1(B,C,D)\ 74 movl C, %edi;\ 75 xorl D, %edi;\ 76 andl B, %edi;\ 77 xorl D, %edi;\ 78 79/* 80 * fn2 = ((b ^ c) & d) ^ c; 81 */ 82#define FN2(B,C,D)\ 83 movl B, %edi;\ 84 xorl C, %edi;\ 85 andl D, %edi;\ 86 xorl C, %edi;\ 87 88/* 89 * fn3 = b ^ c ^ d; 90 */ 91#define FN3(B,C,D)\ 92 movl B, %edi;\ 93 xorl C, %edi;\ 94 xorl D, %edi;\ 95 96/* 97 * fn4 = c ^ (b | ~d); 98 */ 99#define FN4(B,C,D)\ 100 movl D, %edi;\ 101 xorl $-1, %edi;\ 102 orl B, %edi;\ 103 xorl C, %edi;\ 104 105#define STACKSIZE 20 106 107#define DATA (STACKSIZE+8) 108#define LEN (STACKSIZE+12) 109#define STATE (STACKSIZE+16) 110 111#define EDATA (STACKSIZE-4) 112#define OLDEBX (STACKSIZE-8) 113#define OLDESI (STACKSIZE-12) 114#define OLDEDI (STACKSIZE-16) 115 116 .text 117 118 .p2align 2,0x90 119#ifdef __APPLE__ 120 .globl __md5block 121 __md5block: 122#else 123 .globl _md5block 124 _md5block: 125#endif 126 127 /* Prelude */ 128 pushl %ebp 129 subl $(STACKSIZE), %esp 130 movl %ebx, OLDEBX(%esp) 131 movl %esi, OLDESI(%esp) 132 movl %edi, OLDEDI(%esp) 133 134 movl DATA(%esp), %eax 135 addl LEN(%esp), %eax 136 movl %eax, EDATA(%esp) 137 138 movl DATA(%esp), %ebp 139 1400: 141 movl STATE(%esp), %esi 142 movl (%esi), %eax 143 movl 4(%esi), %ebx 144 movl 8(%esi), %ecx 145 movl 12(%esi), %edx 146 147 BODY1( 0*4,0xd76aa478,FN1,S11,%eax,%ebx,%ecx,%edx) 148 BODY1( 1*4,0xe8c7b756,FN1,S12,%edx,%eax,%ebx,%ecx) 149 BODY1( 2*4,0x242070db,FN1,S13,%ecx,%edx,%eax,%ebx) 150 BODY1( 3*4,0xc1bdceee,FN1,S14,%ebx,%ecx,%edx,%eax) 151 152 BODY1( 4*4,0xf57c0faf,FN1,S11,%eax,%ebx,%ecx,%edx) 153 BODY1( 5*4,0x4787c62a,FN1,S12,%edx,%eax,%ebx,%ecx) 154 BODY1( 6*4,0xa8304613,FN1,S13,%ecx,%edx,%eax,%ebx) 155 BODY1( 7*4,0xfd469501,FN1,S14,%ebx,%ecx,%edx,%eax) 156 157 BODY1( 8*4,0x698098d8,FN1,S11,%eax,%ebx,%ecx,%edx) 158 BODY1( 9*4,0x8b44f7af,FN1,S12,%edx,%eax,%ebx,%ecx) 159 BODY1(10*4,0xffff5bb1,FN1,S13,%ecx,%edx,%eax,%ebx) 160 BODY1(11*4,0x895cd7be,FN1,S14,%ebx,%ecx,%edx,%eax) 161 162 BODY1(12*4,0x6b901122,FN1,S11,%eax,%ebx,%ecx,%edx) 163 BODY1(13*4,0xfd987193,FN1,S12,%edx,%eax,%ebx,%ecx) 164 BODY1(14*4,0xa679438e,FN1,S13,%ecx,%edx,%eax,%ebx) 165 BODY1(15*4,0x49b40821,FN1,S14,%ebx,%ecx,%edx,%eax) 166 167 168 BODY( 1*4,0xf61e2562,FN2,S21,%eax,%ebx,%ecx,%edx) 169 BODY( 6*4,0xc040b340,FN2,S22,%edx,%eax,%ebx,%ecx) 170 BODY(11*4,0x265e5a51,FN2,S23,%ecx,%edx,%eax,%ebx) 171 BODY( 0*4,0xe9b6c7aa,FN2,S24,%ebx,%ecx,%edx,%eax) 172 173 BODY( 5*4,0xd62f105d,FN2,S21,%eax,%ebx,%ecx,%edx) 174 BODY(10*4,0x02441453,FN2,S22,%edx,%eax,%ebx,%ecx) 175 BODY(15*4,0xd8a1e681,FN2,S23,%ecx,%edx,%eax,%ebx) 176 BODY( 4*4,0xe7d3fbc8,FN2,S24,%ebx,%ecx,%edx,%eax) 177 178 BODY( 9*4,0x21e1cde6,FN2,S21,%eax,%ebx,%ecx,%edx) 179 BODY(14*4,0xc33707d6,FN2,S22,%edx,%eax,%ebx,%ecx) 180 BODY( 3*4,0xf4d50d87,FN2,S23,%ecx,%edx,%eax,%ebx) 181 BODY( 8*4,0x455a14ed,FN2,S24,%ebx,%ecx,%edx,%eax) 182 183 BODY(13*4,0xa9e3e905,FN2,S21,%eax,%ebx,%ecx,%edx) 184 BODY( 2*4,0xfcefa3f8,FN2,S22,%edx,%eax,%ebx,%ecx) 185 BODY( 7*4,0x676f02d9,FN2,S23,%ecx,%edx,%eax,%ebx) 186 BODY(12*4,0x8d2a4c8a,FN2,S24,%ebx,%ecx,%edx,%eax) 187 188 189 BODY( 5*4,0xfffa3942,FN3,S31,%eax,%ebx,%ecx,%edx) 190 BODY( 8*4,0x8771f681,FN3,S32,%edx,%eax,%ebx,%ecx) 191 BODY(11*4,0x6d9d6122,FN3,S33,%ecx,%edx,%eax,%ebx) 192 BODY(14*4,0xfde5380c,FN3,S34,%ebx,%ecx,%edx,%eax) 193 194 BODY( 1*4,0xa4beea44,FN3,S31,%eax,%ebx,%ecx,%edx) 195 BODY( 4*4,0x4bdecfa9,FN3,S32,%edx,%eax,%ebx,%ecx) 196 BODY( 7*4,0xf6bb4b60,FN3,S33,%ecx,%edx,%eax,%ebx) 197 BODY(10*4,0xbebfbc70,FN3,S34,%ebx,%ecx,%edx,%eax) 198 199 BODY(13*4,0x289b7ec6,FN3,S31,%eax,%ebx,%ecx,%edx) 200 BODY( 0*4,0xeaa127fa,FN3,S32,%edx,%eax,%ebx,%ecx) 201 BODY( 3*4,0xd4ef3085,FN3,S33,%ecx,%edx,%eax,%ebx) 202 BODY( 6*4,0x04881d05,FN3,S34,%ebx,%ecx,%edx,%eax) 203 204 BODY( 9*4,0xd9d4d039,FN3,S31,%eax,%ebx,%ecx,%edx) 205 BODY(12*4,0xe6db99e5,FN3,S32,%edx,%eax,%ebx,%ecx) 206 BODY(15*4,0x1fa27cf8,FN3,S33,%ecx,%edx,%eax,%ebx) 207 BODY( 2*4,0xc4ac5665,FN3,S34,%ebx,%ecx,%edx,%eax) 208 209 210 BODY( 0*4,0xf4292244,FN4,S41,%eax,%ebx,%ecx,%edx) 211 BODY( 7*4,0x432aff97,FN4,S42,%edx,%eax,%ebx,%ecx) 212 BODY(14*4,0xab9423a7,FN4,S43,%ecx,%edx,%eax,%ebx) 213 BODY( 5*4,0xfc93a039,FN4,S44,%ebx,%ecx,%edx,%eax) 214 215 BODY(12*4,0x655b59c3,FN4,S41,%eax,%ebx,%ecx,%edx) 216 BODY( 3*4,0x8f0ccc92,FN4,S42,%edx,%eax,%ebx,%ecx) 217 BODY(10*4,0xffeff47d,FN4,S43,%ecx,%edx,%eax,%ebx) 218 BODY( 1*4,0x85845dd1,FN4,S44,%ebx,%ecx,%edx,%eax) 219 220 BODY( 8*4,0x6fa87e4f,FN4,S41,%eax,%ebx,%ecx,%edx) 221 BODY(15*4,0xfe2ce6e0,FN4,S42,%edx,%eax,%ebx,%ecx) 222 BODY( 6*4,0xa3014314,FN4,S43,%ecx,%edx,%eax,%ebx) 223 BODY(13*4,0x4e0811a1,FN4,S44,%ebx,%ecx,%edx,%eax) 224 225 BODY( 4*4,0xf7537e82,FN4,S41,%eax,%ebx,%ecx,%edx) 226 BODY(11*4,0xbd3af235,FN4,S42,%edx,%eax,%ebx,%ecx) 227 BODY( 2*4,0x2ad7d2bb,FN4,S43,%ecx,%edx,%eax,%ebx) 228 BODY( 9*4,0xeb86d391,FN4,S44,%ebx,%ecx,%edx,%eax) 229 230 addl $(16*4), %ebp 231 movl STATE(%esp), %edi 232 addl %eax,0(%edi) 233 addl %ebx,4(%edi) 234 addl %ecx,8(%edi) 235 addl %edx,12(%edi) 236 237 movl EDATA(%esp), %edi 238 cmpl %edi, %ebp 239 jb 0b 240 241 /* Postlude */ 242 movl OLDEBX(%esp), %ebx 243 movl OLDESI(%esp), %esi 244 movl OLDEDI(%esp), %edi 245 addl $(STACKSIZE), %esp 246 popl %ebp 247 ret 248 249