📄 d-win32.asm
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; Don't even think of reading this code
; It was automatically generated by des-586.pl
; Which is a perl program used to generate the x86 assember for
; any of elf, a.out, BSDI,Win32, or Solaris
; eric <eay@cryptsoft.com>
;
TITLE des-586.asm
.486
.model FLAT
_TEXT SEGMENT
PUBLIC _des_encrypt
EXTRN _des_SPtrans:DWORD
_des_encrypt PROC NEAR
push esi
push edi
;
; Load the 2 words
mov esi, DWORD PTR 12[esp]
xor ecx, ecx
push ebx
push ebp
mov eax, DWORD PTR [esi]
mov ebx, DWORD PTR 28[esp]
mov edi, DWORD PTR 4[esi]
;
; IP
rol eax, 4
mov esi, eax
xor eax, edi
and eax, 0f0f0f0f0h
xor esi, eax
xor edi, eax
;
rol edi, 20
mov eax, edi
xor edi, esi
and edi, 0fff0000fh
xor eax, edi
xor esi, edi
;
rol eax, 14
mov edi, eax
xor eax, esi
and eax, 033333333h
xor edi, eax
xor esi, eax
;
rol esi, 22
mov eax, esi
xor esi, edi
and esi, 003fc03fch
xor eax, esi
xor edi, esi
;
rol eax, 9
mov esi, eax
xor eax, edi
and eax, 0aaaaaaaah
xor esi, eax
xor edi, eax
;
rol edi, 1
mov ebp, DWORD PTR 24[esp]
cmp ebx, 0
je $L000start_decrypt
;
; Round 0
mov eax, DWORD PTR [ebp]
xor ebx, ebx
mov edx, DWORD PTR 4[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 1
mov eax, DWORD PTR 8[ebp]
xor ebx, ebx
mov edx, DWORD PTR 12[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 2
mov eax, DWORD PTR 16[ebp]
xor ebx, ebx
mov edx, DWORD PTR 20[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 3
mov eax, DWORD PTR 24[ebp]
xor ebx, ebx
mov edx, DWORD PTR 28[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 4
mov eax, DWORD PTR 32[ebp]
xor ebx, ebx
mov edx, DWORD PTR 36[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 5
mov eax, DWORD PTR 40[ebp]
xor ebx, ebx
mov edx, DWORD PTR 44[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 6
mov eax, DWORD PTR 48[ebp]
xor ebx, ebx
mov edx, DWORD PTR 52[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 7
mov eax, DWORD PTR 56[ebp]
xor ebx, ebx
mov edx, DWORD PTR 60[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 8
mov eax, DWORD PTR 64[ebp]
xor ebx, ebx
mov edx, DWORD PTR 68[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 9
mov eax, DWORD PTR 72[ebp]
xor ebx, ebx
mov edx, DWORD PTR 76[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 10
mov eax, DWORD PTR 80[ebp]
xor ebx, ebx
mov edx, DWORD PTR 84[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 11
mov eax, DWORD PTR 88[ebp]
xor ebx, ebx
mov edx, DWORD PTR 92[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 12
mov eax, DWORD PTR 96[ebp]
xor ebx, ebx
mov edx, DWORD PTR 100[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor edi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor edi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor edi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor edi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor edi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor edi, ebx
;
; Round 13
mov eax, DWORD PTR 104[ebp]
xor ebx, ebx
mov edx, DWORD PTR 108[ebp]
xor eax, edi
xor edx, edi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
xor esi, ebp
mov ebp, DWORD PTR _des_SPtrans[0200h+ecx]
xor esi, ebp
mov cl, dh
shr eax, 16
mov ebp, DWORD PTR _des_SPtrans[0100h+ebx]
xor esi, ebp
mov bl, ah
shr edx, 16
mov ebp, DWORD PTR _des_SPtrans[0300h+ecx]
xor esi, ebp
mov ebp, DWORD PTR 24[esp]
mov cl, dh
and eax, 0ffh
and edx, 0ffh
mov ebx, DWORD PTR _des_SPtrans[0600h+ebx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0700h+ecx]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0400h+eax]
xor esi, ebx
mov ebx, DWORD PTR _des_SPtrans[0500h+edx]
xor esi, ebx
;
; Round 14
mov eax, DWORD PTR 112[ebp]
xor ebx, ebx
mov edx, DWORD PTR 116[ebp]
xor eax, esi
xor edx, esi
and eax, 0fcfcfcfch
and edx, 0cfcfcfcfh
mov bl, al
mov cl, ah
ror edx, 4
mov ebp, DWORD PTR _des_SPtrans[ebx]
mov bl, dl
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