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 .globl _md5block 120 .type _md5block, @function 121 _md5block: 122 123 /* Prelude */ 124 pushl %ebp 125 subl $(STACKSIZE), %esp 126 movl %ebx, OLDEBX(%esp) 127 movl %esi, OLDESI(%esp) 128 movl %edi, OLDEDI(%esp) 129 130 movl DATA(%esp), %eax 131 addl LEN(%esp), %eax 132 movl %eax, EDATA(%esp) 133 134 movl DATA(%esp), %ebp 135 1360: 137 movl STATE(%esp), %esi 138 movl (%esi), %eax 139 movl 4(%esi), %ebx 140 movl 8(%esi), %ecx 141 movl 12(%esi), %edx 142 143 BODY1( 0*4,0xd76aa478,FN1,S11,%eax,%ebx,%ecx,%edx) 144 BODY1( 1*4,0xe8c7b756,FN1,S12,%edx,%eax,%ebx,%ecx) 145 BODY1( 2*4,0x242070db,FN1,S13,%ecx,%edx,%eax,%ebx) 146 BODY1( 3*4,0xc1bdceee,FN1,S14,%ebx,%ecx,%edx,%eax) 147 148 BODY1( 4*4,0xf57c0faf,FN1,S11,%eax,%ebx,%ecx,%edx) 149 BODY1( 5*4,0x4787c62a,FN1,S12,%edx,%eax,%ebx,%ecx) 150 BODY1( 6*4,0xa8304613,FN1,S13,%ecx,%edx,%eax,%ebx) 151 BODY1( 7*4,0xfd469501,FN1,S14,%ebx,%ecx,%edx,%eax) 152 153 BODY1( 8*4,0x698098d8,FN1,S11,%eax,%ebx,%ecx,%edx) 154 BODY1( 9*4,0x8b44f7af,FN1,S12,%edx,%eax,%ebx,%ecx) 155 BODY1(10*4,0xffff5bb1,FN1,S13,%ecx,%edx,%eax,%ebx) 156 BODY1(11*4,0x895cd7be,FN1,S14,%ebx,%ecx,%edx,%eax) 157 158 BODY1(12*4,0x6b901122,FN1,S11,%eax,%ebx,%ecx,%edx) 159 BODY1(13*4,0xfd987193,FN1,S12,%edx,%eax,%ebx,%ecx) 160 BODY1(14*4,0xa679438e,FN1,S13,%ecx,%edx,%eax,%ebx) 161 BODY1(15*4,0x49b40821,FN1,S14,%ebx,%ecx,%edx,%eax) 162 163 164 BODY( 1*4,0xf61e2562,FN2,S21,%eax,%ebx,%ecx,%edx) 165 BODY( 6*4,0xc040b340,FN2,S22,%edx,%eax,%ebx,%ecx) 166 BODY(11*4,0x265e5a51,FN2,S23,%ecx,%edx,%eax,%ebx) 167 BODY( 0*4,0xe9b6c7aa,FN2,S24,%ebx,%ecx,%edx,%eax) 168 169 BODY( 5*4,0xd62f105d,FN2,S21,%eax,%ebx,%ecx,%edx) 170 BODY(10*4,0x02441453,FN2,S22,%edx,%eax,%ebx,%ecx) 171 BODY(15*4,0xd8a1e681,FN2,S23,%ecx,%edx,%eax,%ebx) 172 BODY( 4*4,0xe7d3fbc8,FN2,S24,%ebx,%ecx,%edx,%eax) 173 174 BODY( 9*4,0x21e1cde6,FN2,S21,%eax,%ebx,%ecx,%edx) 175 BODY(14*4,0xc33707d6,FN2,S22,%edx,%eax,%ebx,%ecx) 176 BODY( 3*4,0xf4d50d87,FN2,S23,%ecx,%edx,%eax,%ebx) 177 BODY( 8*4,0x455a14ed,FN2,S24,%ebx,%ecx,%edx,%eax) 178 179 BODY(13*4,0xa9e3e905,FN2,S21,%eax,%ebx,%ecx,%edx) 180 BODY( 2*4,0xfcefa3f8,FN2,S22,%edx,%eax,%ebx,%ecx) 181 BODY( 7*4,0x676f02d9,FN2,S23,%ecx,%edx,%eax,%ebx) 182 BODY(12*4,0x8d2a4c8a,FN2,S24,%ebx,%ecx,%edx,%eax) 183 184 185 BODY( 5*4,0xfffa3942,FN3,S31,%eax,%ebx,%ecx,%edx) 186 BODY( 8*4,0x8771f681,FN3,S32,%edx,%eax,%ebx,%ecx) 187 BODY(11*4,0x6d9d6122,FN3,S33,%ecx,%edx,%eax,%ebx) 188 BODY(14*4,0xfde5380c,FN3,S34,%ebx,%ecx,%edx,%eax) 189 190 BODY( 1*4,0xa4beea44,FN3,S31,%eax,%ebx,%ecx,%edx) 191 BODY( 4*4,0x4bdecfa9,FN3,S32,%edx,%eax,%ebx,%ecx) 192 BODY( 7*4,0xf6bb4b60,FN3,S33,%ecx,%edx,%eax,%ebx) 193 BODY(10*4,0xbebfbc70,FN3,S34,%ebx,%ecx,%edx,%eax) 194 195 BODY(13*4,0x289b7ec6,FN3,S31,%eax,%ebx,%ecx,%edx) 196 BODY( 0*4,0xeaa127fa,FN3,S32,%edx,%eax,%ebx,%ecx) 197 BODY( 3*4,0xd4ef3085,FN3,S33,%ecx,%edx,%eax,%ebx) 198 BODY( 6*4,0x04881d05,FN3,S34,%ebx,%ecx,%edx,%eax) 199 200 BODY( 9*4,0xd9d4d039,FN3,S31,%eax,%ebx,%ecx,%edx) 201 BODY(12*4,0xe6db99e5,FN3,S32,%edx,%eax,%ebx,%ecx) 202 BODY(15*4,0x1fa27cf8,FN3,S33,%ecx,%edx,%eax,%ebx) 203 BODY( 2*4,0xc4ac5665,FN3,S34,%ebx,%ecx,%edx,%eax) 204 205 206 BODY( 0*4,0xf4292244,FN4,S41,%eax,%ebx,%ecx,%edx) 207 BODY( 7*4,0x432aff97,FN4,S42,%edx,%eax,%ebx,%ecx) 208 BODY(14*4,0xab9423a7,FN4,S43,%ecx,%edx,%eax,%ebx) 209 BODY( 5*4,0xfc93a039,FN4,S44,%ebx,%ecx,%edx,%eax) 210 211 BODY(12*4,0x655b59c3,FN4,S41,%eax,%ebx,%ecx,%edx) 212 BODY( 3*4,0x8f0ccc92,FN4,S42,%edx,%eax,%ebx,%ecx) 213 BODY(10*4,0xffeff47d,FN4,S43,%ecx,%edx,%eax,%ebx) 214 BODY( 1*4,0x85845dd1,FN4,S44,%ebx,%ecx,%edx,%eax) 215 216 BODY( 8*4,0x6fa87e4f,FN4,S41,%eax,%ebx,%ecx,%edx) 217 BODY(15*4,0xfe2ce6e0,FN4,S42,%edx,%eax,%ebx,%ecx) 218 BODY( 6*4,0xa3014314,FN4,S43,%ecx,%edx,%eax,%ebx) 219 BODY(13*4,0x4e0811a1,FN4,S44,%ebx,%ecx,%edx,%eax) 220 221 BODY( 4*4,0xf7537e82,FN4,S41,%eax,%ebx,%ecx,%edx) 222 BODY(11*4,0xbd3af235,FN4,S42,%edx,%eax,%ebx,%ecx) 223 BODY( 2*4,0x2ad7d2bb,FN4,S43,%ecx,%edx,%eax,%ebx) 224 BODY( 9*4,0xeb86d391,FN4,S44,%ebx,%ecx,%edx,%eax) 225 226 addl $(16*4), %ebp 227 movl STATE(%esp), %edi 228 addl %eax,0(%edi) 229 addl %ebx,4(%edi) 230 addl %ecx,8(%edi) 231 addl %edx,12(%edi) 232 233 movl EDATA(%esp), %edi 234 cmpl %edi, %ebp 235 jb 0b 236 237 /* Postlude */ 238 movl OLDEBX(%esp), %ebx 239 movl OLDESI(%esp), %esi 240 movl OLDEDI(%esp), %edi 241 addl $(STACKSIZE), %esp 242 popl %ebp 243 ret 244 245