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#
# blowfishopt.i586.asm
#
# Assembler optimized blowfish routines for Intel Pentium processors
#
# Compile target is Metrowerks CodeWarrior Pro 5 for Windows
#
# Copyright (c) 2000 Virtual Unlimited B.V.
#
# Author: Bob Deblier <bob@virtualunlimited.com>
#
# This library is free software; you can redistribute it and/or
# modify it under the terms of the GNU Lesser General Public
# License as published by the Free Software Foundation; either
# version 2.1 of the License, or (at your option) any later version.
#
# This library is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
# Lesser General Public License for more details.
#
# You should have received a copy of the GNU Lesser General Public
# License along with this library; if not, write to the Free Software
# Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
#
etworounds: .macro p
xor ecx,[esi+p]
rol ecx,16
mov al,ch
mov bl,cl
rol ecx,16
mov edi,[esi+eax*4+72+0x000]
add edi,[esi+ebx*4+72+0x400]
mov al,ch
mov bl,cl
xor edi,[esi+eax*4+72+0x800]
add edi,[esi+ebx*4+72+0xC00]
xor edx,edi
xor edx,[esi+p+4]
rol edx,16
mov al,dh
mov bl,dl
rol edx,16
mov edi,[esi+eax*4+72+0x000]
add edi,[esi+ebx*4+72+0x400]
mov al,dh
mov bl,dl
xor edi,[esi+eax*4+72+0x800]
add edi,[esi+ebx*4+72+0xC00]
xor ecx,edi
.endm
dtworounds: .macro p
xor ecx,[esi+p+4]
rol ecx,16
mov al,ch
mov bl,cl
rol ecx,16
mov edi,[esi+eax*4+72+0x000]
add edi,[esi+ebx*4+72+0x400]
mov al,ch
mov bl,cl
xor edi,[esi+eax*4+72+0x800]
add edi,[esi+ebx*4+72+0xC00]
xor edx,edi
xor edx,[esi+p]
rol edx,16
mov al,dh
mov bl,dl
rol edx,16
mov edi,[esi+eax*4+72+0x000]
add edi,[esi+ebx*4+72+0x400]
mov al,dh
mov bl,dl
xor edi,[esi+eax*4+72+0x800]
add edi,[esi+ebx*4+72+0xC00]
xor ecx,edi
.endm
.text
.align 8
.globl _blowfishEncrypt
_blowfishEncrypt:
push edi
push esi
push ebx
mov esi,[esp+16]
mov edi,[esp+24]
xor eax,eax
xor ebx,ebx
mov ecx,[edi]
mov edx,[edi+4]
bswap ecx
bswap edx
etworounds 0
etworounds 8
etworounds 16
etworounds 24
etworounds 32
etworounds 40
etworounds 48
etworounds 56
mov edi,[esp+20]
xor ecx,[esi+64]
xor edx,[esi+68]
bswap ecx
bswap edx
mov [edi+4],ecx
mov [edi],edx
xor eax,eax
pop ebx
pop esi
pop edi
ret
.align 8
.globl _blowfishDecrypt
_blowfishDecrypt:
push edi
push esi
push ebx
mov esi,[esp+16]
mov edi,[esp+24]
xor eax,eax
xor ebx,ebx
mov ecx,[edi]
mov edx,[edi+4]
bswap ecx
bswap edx
dtworounds 64
dtworounds 56
dtworounds 48
dtworounds 40
dtworounds 32
dtworounds 24
dtworounds 16
dtworounds 8
mov edi,[esp+20]
xor ecx,[esi+4]
xor edx,[esi]
bswap ecx
bswap edx
mov [edi+4],ecx
mov [edi],edx
xor eax,eax
pop ebx
pop esi
pop edi
ret
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