245 lines
6.3 KiB
Plaintext
245 lines
6.3 KiB
Plaintext
/*
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* rfc1321 requires that I include this. The code is new. The constants
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* all come from the rfc (hence the copyright). We trade a table for the
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* macros in rfc. The total size is a lot less. -- presotto
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*
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* Copyright (C) 1991-2, RSA Data Security, Inc. Created 1991. All
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* rights reserved.
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*
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* License to copy and use this software is granted provided that it
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* is identified as the "RSA Data Security, Inc. MD5 Message-Digest
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* Algorithm" in all material mentioning or referencing this software
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* or this function.
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*
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* License is also granted to make and use derivative works provided
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* that such works are identified as "derived from the RSA Data
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* Security, Inc. MD5 Message-Digest Algorithm" in all material
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* mentioning or referencing the derived work.
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*
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* RSA Data Security, Inc. makes no representations concerning either
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* the merchantability of this software or the suitability of this
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* software forany particular purpose. It is provided "as is"
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* without express or implied warranty of any kind.
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* These notices must be retained in any copies of any part of this
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* documentation and/or software.
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*/
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#define S11 7
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#define S12 12
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#define S13 17
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#define S14 22
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#define S21 5
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#define S22 9
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#define S23 14
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#define S24 20
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#define S31 4
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#define S32 11
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#define S33 16
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#define S34 23
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#define S41 6
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#define S42 10
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#define S43 15
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#define S44 21
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#define PAYME(x) $ ## x
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/*
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* SI is data
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* a += FN(B,C,D);
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* a += x[sh] + t[sh];
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* a = (a << S11) | (a >> (32 - S11));
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* a += b;
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*/
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#define BODY1(off,V,FN,SH,A,B,C,D)\
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FN(B,C,D)\
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leal V(A, %edi, 1), A;\
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addl off(%ebp), A;\
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roll PAYME(SH), A;\
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addl B, A;\
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#define BODY(off,V,FN,SH,A,B,C,D)\
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FN(B,C,D)\
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leal V(A, %edi, 1), A;\
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addl (off)(%ebp), A;\
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roll PAYME(SH), A;\
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addl B,A;\
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/*
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* fn1 = ((c ^ d) & b) ^ d
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*/
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#define FN1(B,C,D)\
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movl C, %edi;\
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xorl D, %edi;\
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andl B, %edi;\
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xorl D, %edi;\
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/*
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* fn2 = ((b ^ c) & d) ^ c;
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*/
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#define FN2(B,C,D)\
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movl B, %edi;\
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xorl C, %edi;\
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andl D, %edi;\
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xorl C, %edi;\
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/*
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* fn3 = b ^ c ^ d;
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*/
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#define FN3(B,C,D)\
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movl B, %edi;\
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xorl C, %edi;\
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xorl D, %edi;\
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/*
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* fn4 = c ^ (b | ~d);
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*/
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#define FN4(B,C,D)\
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movl D, %edi;\
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xorl $-1, %edi;\
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orl B, %edi;\
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xorl C, %edi;\
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#define STACKSIZE 20
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#define DATA (STACKSIZE+8)
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#define LEN (STACKSIZE+12)
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#define STATE (STACKSIZE+16)
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#define EDATA (STACKSIZE-4)
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#define OLDEBX (STACKSIZE-8)
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#define OLDESI (STACKSIZE-12)
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#define OLDEDI (STACKSIZE-16)
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.text
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.p2align 2,0x90
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.globl _md5block
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.type _md5block, @function
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_md5block:
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/* Prelude */
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pushl %ebp
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subl $(STACKSIZE), %esp
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movl %ebx, OLDEBX(%esp)
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movl %esi, OLDESI(%esp)
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movl %edi, OLDEDI(%esp)
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movl DATA(%esp), %eax
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addl LEN(%esp), %eax
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movl %eax, EDATA(%esp)
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movl DATA(%esp), %ebp
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0:
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movl STATE(%esp), %esi
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movl (%esi), %eax
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movl 4(%esi), %ebx
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movl 8(%esi), %ecx
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movl 12(%esi), %edx
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BODY1( 0*4,0xd76aa478,FN1,S11,%eax,%ebx,%ecx,%edx)
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BODY1( 1*4,0xe8c7b756,FN1,S12,%edx,%eax,%ebx,%ecx)
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BODY1( 2*4,0x242070db,FN1,S13,%ecx,%edx,%eax,%ebx)
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BODY1( 3*4,0xc1bdceee,FN1,S14,%ebx,%ecx,%edx,%eax)
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BODY1( 4*4,0xf57c0faf,FN1,S11,%eax,%ebx,%ecx,%edx)
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BODY1( 5*4,0x4787c62a,FN1,S12,%edx,%eax,%ebx,%ecx)
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BODY1( 6*4,0xa8304613,FN1,S13,%ecx,%edx,%eax,%ebx)
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BODY1( 7*4,0xfd469501,FN1,S14,%ebx,%ecx,%edx,%eax)
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BODY1( 8*4,0x698098d8,FN1,S11,%eax,%ebx,%ecx,%edx)
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BODY1( 9*4,0x8b44f7af,FN1,S12,%edx,%eax,%ebx,%ecx)
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BODY1(10*4,0xffff5bb1,FN1,S13,%ecx,%edx,%eax,%ebx)
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BODY1(11*4,0x895cd7be,FN1,S14,%ebx,%ecx,%edx,%eax)
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BODY1(12*4,0x6b901122,FN1,S11,%eax,%ebx,%ecx,%edx)
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BODY1(13*4,0xfd987193,FN1,S12,%edx,%eax,%ebx,%ecx)
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BODY1(14*4,0xa679438e,FN1,S13,%ecx,%edx,%eax,%ebx)
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BODY1(15*4,0x49b40821,FN1,S14,%ebx,%ecx,%edx,%eax)
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BODY( 1*4,0xf61e2562,FN2,S21,%eax,%ebx,%ecx,%edx)
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BODY( 6*4,0xc040b340,FN2,S22,%edx,%eax,%ebx,%ecx)
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BODY(11*4,0x265e5a51,FN2,S23,%ecx,%edx,%eax,%ebx)
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BODY( 0*4,0xe9b6c7aa,FN2,S24,%ebx,%ecx,%edx,%eax)
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BODY( 5*4,0xd62f105d,FN2,S21,%eax,%ebx,%ecx,%edx)
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BODY(10*4,0x02441453,FN2,S22,%edx,%eax,%ebx,%ecx)
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BODY(15*4,0xd8a1e681,FN2,S23,%ecx,%edx,%eax,%ebx)
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BODY( 4*4,0xe7d3fbc8,FN2,S24,%ebx,%ecx,%edx,%eax)
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BODY( 9*4,0x21e1cde6,FN2,S21,%eax,%ebx,%ecx,%edx)
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BODY(14*4,0xc33707d6,FN2,S22,%edx,%eax,%ebx,%ecx)
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BODY( 3*4,0xf4d50d87,FN2,S23,%ecx,%edx,%eax,%ebx)
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BODY( 8*4,0x455a14ed,FN2,S24,%ebx,%ecx,%edx,%eax)
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BODY(13*4,0xa9e3e905,FN2,S21,%eax,%ebx,%ecx,%edx)
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BODY( 2*4,0xfcefa3f8,FN2,S22,%edx,%eax,%ebx,%ecx)
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BODY( 7*4,0x676f02d9,FN2,S23,%ecx,%edx,%eax,%ebx)
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BODY(12*4,0x8d2a4c8a,FN2,S24,%ebx,%ecx,%edx,%eax)
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BODY( 5*4,0xfffa3942,FN3,S31,%eax,%ebx,%ecx,%edx)
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BODY( 8*4,0x8771f681,FN3,S32,%edx,%eax,%ebx,%ecx)
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BODY(11*4,0x6d9d6122,FN3,S33,%ecx,%edx,%eax,%ebx)
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BODY(14*4,0xfde5380c,FN3,S34,%ebx,%ecx,%edx,%eax)
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BODY( 1*4,0xa4beea44,FN3,S31,%eax,%ebx,%ecx,%edx)
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BODY( 4*4,0x4bdecfa9,FN3,S32,%edx,%eax,%ebx,%ecx)
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BODY( 7*4,0xf6bb4b60,FN3,S33,%ecx,%edx,%eax,%ebx)
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BODY(10*4,0xbebfbc70,FN3,S34,%ebx,%ecx,%edx,%eax)
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BODY(13*4,0x289b7ec6,FN3,S31,%eax,%ebx,%ecx,%edx)
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BODY( 0*4,0xeaa127fa,FN3,S32,%edx,%eax,%ebx,%ecx)
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BODY( 3*4,0xd4ef3085,FN3,S33,%ecx,%edx,%eax,%ebx)
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BODY( 6*4,0x04881d05,FN3,S34,%ebx,%ecx,%edx,%eax)
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BODY( 9*4,0xd9d4d039,FN3,S31,%eax,%ebx,%ecx,%edx)
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BODY(12*4,0xe6db99e5,FN3,S32,%edx,%eax,%ebx,%ecx)
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BODY(15*4,0x1fa27cf8,FN3,S33,%ecx,%edx,%eax,%ebx)
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BODY( 2*4,0xc4ac5665,FN3,S34,%ebx,%ecx,%edx,%eax)
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BODY( 0*4,0xf4292244,FN4,S41,%eax,%ebx,%ecx,%edx)
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BODY( 7*4,0x432aff97,FN4,S42,%edx,%eax,%ebx,%ecx)
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BODY(14*4,0xab9423a7,FN4,S43,%ecx,%edx,%eax,%ebx)
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BODY( 5*4,0xfc93a039,FN4,S44,%ebx,%ecx,%edx,%eax)
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BODY(12*4,0x655b59c3,FN4,S41,%eax,%ebx,%ecx,%edx)
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BODY( 3*4,0x8f0ccc92,FN4,S42,%edx,%eax,%ebx,%ecx)
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BODY(10*4,0xffeff47d,FN4,S43,%ecx,%edx,%eax,%ebx)
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BODY( 1*4,0x85845dd1,FN4,S44,%ebx,%ecx,%edx,%eax)
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BODY( 8*4,0x6fa87e4f,FN4,S41,%eax,%ebx,%ecx,%edx)
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BODY(15*4,0xfe2ce6e0,FN4,S42,%edx,%eax,%ebx,%ecx)
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BODY( 6*4,0xa3014314,FN4,S43,%ecx,%edx,%eax,%ebx)
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BODY(13*4,0x4e0811a1,FN4,S44,%ebx,%ecx,%edx,%eax)
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BODY( 4*4,0xf7537e82,FN4,S41,%eax,%ebx,%ecx,%edx)
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BODY(11*4,0xbd3af235,FN4,S42,%edx,%eax,%ebx,%ecx)
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BODY( 2*4,0x2ad7d2bb,FN4,S43,%ecx,%edx,%eax,%ebx)
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BODY( 9*4,0xeb86d391,FN4,S44,%ebx,%ecx,%edx,%eax)
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addl $(16*4), %ebp
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movl STATE(%esp), %edi
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addl %eax,0(%edi)
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addl %ebx,4(%edi)
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addl %ecx,8(%edi)
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addl %edx,12(%edi)
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movl EDATA(%esp), %edi
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cmpl %edi, %ebp
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jb 0b
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/* Postlude */
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movl OLDEBX(%esp), %ebx
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movl OLDESI(%esp), %esi
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movl OLDEDI(%esp), %edi
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addl $(STACKSIZE), %esp
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popl %ebp
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ret
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