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573 lines
9.5 KiB
573 lines
9.5 KiB
TITLE rc5-586.asm
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IF @Version LT 800
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ECHO MASM version 8.00 or later is strongly recommended.
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ENDIF
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.586
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.MODEL FLAT
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OPTION DOTNAME
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IF @Version LT 800
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.text$ SEGMENT PAGE 'CODE'
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ELSE
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.text$ SEGMENT ALIGN(64) 'CODE'
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ENDIF
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ALIGN 16
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_RC5_32_encrypt PROC PUBLIC
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$L_RC5_32_encrypt_begin::
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;
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push ebp
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push esi
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push edi
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mov edx,DWORD PTR 16[esp]
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mov ebp,DWORD PTR 20[esp]
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; Load the 2 words
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mov edi,DWORD PTR [edx]
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mov esi,DWORD PTR 4[edx]
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push ebx
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mov ebx,DWORD PTR [ebp]
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add edi,DWORD PTR 4[ebp]
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add esi,DWORD PTR 8[ebp]
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xor edi,esi
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mov eax,DWORD PTR 12[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 16[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 20[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 24[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 28[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 32[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 36[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 40[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 44[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 48[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 52[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 56[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 60[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 64[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 68[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 72[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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cmp ebx,8
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je $L000rc5_exit
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xor edi,esi
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mov eax,DWORD PTR 76[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 80[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 84[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 88[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 92[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 96[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 100[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 104[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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cmp ebx,12
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je $L000rc5_exit
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xor edi,esi
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mov eax,DWORD PTR 108[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 112[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 116[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 120[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 124[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 128[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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xor edi,esi
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mov eax,DWORD PTR 132[ebp]
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mov ecx,esi
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rol edi,cl
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add edi,eax
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xor esi,edi
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mov eax,DWORD PTR 136[ebp]
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mov ecx,edi
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rol esi,cl
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add esi,eax
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$L000rc5_exit:
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mov DWORD PTR [edx],edi
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mov DWORD PTR 4[edx],esi
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pop ebx
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pop edi
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pop esi
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pop ebp
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ret
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_RC5_32_encrypt ENDP
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ALIGN 16
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_RC5_32_decrypt PROC PUBLIC
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$L_RC5_32_decrypt_begin::
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;
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push ebp
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push esi
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push edi
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mov edx,DWORD PTR 16[esp]
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mov ebp,DWORD PTR 20[esp]
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; Load the 2 words
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mov edi,DWORD PTR [edx]
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mov esi,DWORD PTR 4[edx]
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push ebx
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mov ebx,DWORD PTR [ebp]
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cmp ebx,12
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je $L001rc5_dec_12
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cmp ebx,8
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je $L002rc5_dec_8
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mov eax,DWORD PTR 136[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 132[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 128[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 124[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 120[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 116[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 112[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 108[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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$L001rc5_dec_12:
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mov eax,DWORD PTR 104[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 100[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 96[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 92[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 88[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 84[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 80[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 76[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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$L002rc5_dec_8:
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mov eax,DWORD PTR 72[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 68[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 64[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 60[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 56[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 52[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 48[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 44[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 40[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 36[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 32[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 28[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 24[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 20[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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mov eax,DWORD PTR 16[ebp]
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sub esi,eax
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mov ecx,edi
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ror esi,cl
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xor esi,edi
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mov eax,DWORD PTR 12[ebp]
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sub edi,eax
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mov ecx,esi
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ror edi,cl
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xor edi,esi
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sub esi,DWORD PTR 8[ebp]
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sub edi,DWORD PTR 4[ebp]
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$L003rc5_exit:
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mov DWORD PTR [edx],edi
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mov DWORD PTR 4[edx],esi
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pop ebx
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pop edi
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pop esi
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pop ebp
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ret
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_RC5_32_decrypt ENDP
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ALIGN 16
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_RC5_32_cbc_encrypt PROC PUBLIC
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$L_RC5_32_cbc_encrypt_begin::
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;
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push ebp
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push ebx
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push esi
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push edi
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mov ebp,DWORD PTR 28[esp]
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; getting iv ptr from parameter 4
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mov ebx,DWORD PTR 36[esp]
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mov esi,DWORD PTR [ebx]
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mov edi,DWORD PTR 4[ebx]
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push edi
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push esi
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push edi
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push esi
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mov ebx,esp
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mov esi,DWORD PTR 36[esp]
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mov edi,DWORD PTR 40[esp]
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; getting encrypt flag from parameter 5
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mov ecx,DWORD PTR 56[esp]
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; get and push parameter 3
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mov eax,DWORD PTR 48[esp]
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push eax
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push ebx
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cmp ecx,0
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jz $L004decrypt
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and ebp,4294967288
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mov eax,DWORD PTR 8[esp]
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mov ebx,DWORD PTR 12[esp]
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jz $L005encrypt_finish
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$L006encrypt_loop:
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mov ecx,DWORD PTR [esi]
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mov edx,DWORD PTR 4[esi]
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xor eax,ecx
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xor ebx,edx
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mov DWORD PTR 8[esp],eax
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mov DWORD PTR 12[esp],ebx
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call $L_RC5_32_encrypt_begin
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mov eax,DWORD PTR 8[esp]
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mov ebx,DWORD PTR 12[esp]
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mov DWORD PTR [edi],eax
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mov DWORD PTR 4[edi],ebx
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add esi,8
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add edi,8
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sub ebp,8
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jnz $L006encrypt_loop
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$L005encrypt_finish:
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mov ebp,DWORD PTR 52[esp]
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and ebp,7
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jz $L007finish
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call $L008PIC_point
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$L008PIC_point:
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pop edx
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lea ecx,DWORD PTR ($L009cbc_enc_jmp_table-$L008PIC_point)[edx]
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mov ebp,DWORD PTR [ebp*4+ecx]
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add ebp,edx
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xor ecx,ecx
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xor edx,edx
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jmp ebp
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$L010ej7:
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mov dh,BYTE PTR 6[esi]
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shl edx,8
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$L011ej6:
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mov dh,BYTE PTR 5[esi]
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$L012ej5:
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mov dl,BYTE PTR 4[esi]
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$L013ej4:
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mov ecx,DWORD PTR [esi]
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jmp $L014ejend
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$L015ej3:
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mov ch,BYTE PTR 2[esi]
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shl ecx,8
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$L016ej2:
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mov ch,BYTE PTR 1[esi]
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$L017ej1:
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mov cl,BYTE PTR [esi]
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$L014ejend:
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xor eax,ecx
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xor ebx,edx
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mov DWORD PTR 8[esp],eax
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mov DWORD PTR 12[esp],ebx
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call $L_RC5_32_encrypt_begin
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mov eax,DWORD PTR 8[esp]
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mov ebx,DWORD PTR 12[esp]
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mov DWORD PTR [edi],eax
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mov DWORD PTR 4[edi],ebx
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jmp $L007finish
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$L004decrypt:
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and ebp,4294967288
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mov eax,DWORD PTR 16[esp]
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mov ebx,DWORD PTR 20[esp]
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jz $L018decrypt_finish
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$L019decrypt_loop:
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mov eax,DWORD PTR [esi]
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mov ebx,DWORD PTR 4[esi]
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mov DWORD PTR 8[esp],eax
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mov DWORD PTR 12[esp],ebx
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call $L_RC5_32_decrypt_begin
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mov eax,DWORD PTR 8[esp]
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mov ebx,DWORD PTR 12[esp]
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mov ecx,DWORD PTR 16[esp]
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mov edx,DWORD PTR 20[esp]
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xor ecx,eax
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xor edx,ebx
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mov eax,DWORD PTR [esi]
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mov ebx,DWORD PTR 4[esi]
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mov DWORD PTR [edi],ecx
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mov DWORD PTR 4[edi],edx
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mov DWORD PTR 16[esp],eax
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mov DWORD PTR 20[esp],ebx
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add esi,8
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add edi,8
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sub ebp,8
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jnz $L019decrypt_loop
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$L018decrypt_finish:
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mov ebp,DWORD PTR 52[esp]
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and ebp,7
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jz $L007finish
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mov eax,DWORD PTR [esi]
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mov ebx,DWORD PTR 4[esi]
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mov DWORD PTR 8[esp],eax
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mov DWORD PTR 12[esp],ebx
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call $L_RC5_32_decrypt_begin
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mov eax,DWORD PTR 8[esp]
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mov ebx,DWORD PTR 12[esp]
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mov ecx,DWORD PTR 16[esp]
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mov edx,DWORD PTR 20[esp]
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xor ecx,eax
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xor edx,ebx
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mov eax,DWORD PTR [esi]
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mov ebx,DWORD PTR 4[esi]
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$L020dj7:
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ror edx,16
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mov BYTE PTR 6[edi],dl
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shr edx,16
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$L021dj6:
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mov BYTE PTR 5[edi],dh
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$L022dj5:
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mov BYTE PTR 4[edi],dl
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|
$L023dj4:
|
|
mov DWORD PTR [edi],ecx
|
|
jmp $L024djend
|
|
$L025dj3:
|
|
ror ecx,16
|
|
mov BYTE PTR 2[edi],cl
|
|
shl ecx,16
|
|
$L026dj2:
|
|
mov BYTE PTR 1[esi],ch
|
|
$L027dj1:
|
|
mov BYTE PTR [esi],cl
|
|
$L024djend:
|
|
jmp $L007finish
|
|
$L007finish:
|
|
mov ecx,DWORD PTR 60[esp]
|
|
add esp,24
|
|
mov DWORD PTR [ecx],eax
|
|
mov DWORD PTR 4[ecx],ebx
|
|
pop edi
|
|
pop esi
|
|
pop ebx
|
|
pop ebp
|
|
ret
|
|
ALIGN 64
|
|
$L009cbc_enc_jmp_table:
|
|
DD 0
|
|
DD $L017ej1-$L008PIC_point
|
|
DD $L016ej2-$L008PIC_point
|
|
DD $L015ej3-$L008PIC_point
|
|
DD $L013ej4-$L008PIC_point
|
|
DD $L012ej5-$L008PIC_point
|
|
DD $L011ej6-$L008PIC_point
|
|
DD $L010ej7-$L008PIC_point
|
|
ALIGN 64
|
|
_RC5_32_cbc_encrypt ENDP
|
|
.text$ ENDS
|
|
END
|
|
|