diff options
Diffstat (limited to 'crypto/cast/asm/c-win32.asm')
| -rw-r--r-- | crypto/cast/asm/c-win32.asm | 940 |
1 files changed, 940 insertions, 0 deletions
diff --git a/crypto/cast/asm/c-win32.asm b/crypto/cast/asm/c-win32.asm new file mode 100644 index 0000000000..a1d8a2671a --- /dev/null +++ b/crypto/cast/asm/c-win32.asm @@ -0,0 +1,940 @@ + ; Don't even think of reading this code + ; It was automatically generated by cast-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 cast-586.asm + .486 +.model FLAT +_TEXT SEGMENT +PUBLIC _CAST_encrypt +EXTERN _CAST_S_table0:DWORD +EXTERN _CAST_S_table1:DWORD +EXTERN _CAST_S_table2:DWORD +EXTERN _CAST_S_table3:DWORD + +_CAST_encrypt PROC NEAR + ; + push ebp + push ebx + mov ebx, DWORD PTR 12[esp] + mov ebp, DWORD PTR 16[esp] + push esi + push edi + ; Load the 2 words + mov edi, DWORD PTR [ebx] + mov esi, DWORD PTR 4[ebx] + xor eax, eax + ; round 0 + mov edx, DWORD PTR [ebp] + mov ecx, DWORD PTR 4[ebp] + add edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor edi, ecx + ; round 1 + mov edx, DWORD PTR 8[ebp] + mov ecx, DWORD PTR 12[ebp] + xor edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor esi, ecx + ; round 2 + mov edx, DWORD PTR 16[ebp] + mov ecx, DWORD PTR 20[ebp] + sub edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor edi, ecx + ; round 3 + mov edx, DWORD PTR 24[ebp] + mov ecx, DWORD PTR 28[ebp] + add edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor esi, ecx + ; round 4 + mov edx, DWORD PTR 32[ebp] + mov ecx, DWORD PTR 36[ebp] + xor edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor edi, ecx + ; round 5 + mov edx, DWORD PTR 40[ebp] + mov ecx, DWORD PTR 44[ebp] + sub edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor esi, ecx + ; round 6 + mov edx, DWORD PTR 48[ebp] + mov ecx, DWORD PTR 52[ebp] + add edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor edi, ecx + ; round 7 + mov edx, DWORD PTR 56[ebp] + mov ecx, DWORD PTR 60[ebp] + xor edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor esi, ecx + ; round 8 + mov edx, DWORD PTR 64[ebp] + mov ecx, DWORD PTR 68[ebp] + sub edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor edi, ecx + ; round 9 + mov edx, DWORD PTR 72[ebp] + mov ecx, DWORD PTR 76[ebp] + add edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor esi, ecx + ; round 10 + mov edx, DWORD PTR 80[ebp] + mov ecx, DWORD PTR 84[ebp] + xor edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor edi, ecx + ; round 11 + mov edx, DWORD PTR 88[ebp] + mov ecx, DWORD PTR 92[ebp] + sub edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor esi, ecx + ; round 12 + mov edx, DWORD PTR 96[ebp] + mov ecx, DWORD PTR 100[ebp] + add edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor edi, ecx + ; round 13 + mov edx, DWORD PTR 104[ebp] + mov ecx, DWORD PTR 108[ebp] + xor edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor esi, ecx + ; round 14 + mov edx, DWORD PTR 112[ebp] + mov ecx, DWORD PTR 116[ebp] + sub edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor edi, ecx + ; round 15 + mov edx, DWORD PTR 120[ebp] + mov ecx, DWORD PTR 124[ebp] + add edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + mov eax, DWORD PTR 20[esp] + xor esi, ecx + nop + mov DWORD PTR 4[eax],edi + mov DWORD PTR [eax],esi + pop edi + pop esi + pop ebx + pop ebp + ret +_CAST_encrypt ENDP +_TEXT ENDS +_TEXT SEGMENT +PUBLIC _CAST_decrypt +EXTERN _CAST_S_table0:DWORD +EXTERN _CAST_S_table1:DWORD +EXTERN _CAST_S_table2:DWORD +EXTERN _CAST_S_table3:DWORD + +_CAST_decrypt PROC NEAR + ; + push ebp + push ebx + mov ebx, DWORD PTR 12[esp] + mov ebp, DWORD PTR 16[esp] + push esi + push edi + ; Load the 2 words + mov edi, DWORD PTR [ebx] + mov esi, DWORD PTR 4[ebx] + xor eax, eax + ; round 15 + mov edx, DWORD PTR 120[ebp] + mov ecx, DWORD PTR 124[ebp] + add edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor edi, ecx + ; round 14 + mov edx, DWORD PTR 112[ebp] + mov ecx, DWORD PTR 116[ebp] + sub edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor esi, ecx + ; round 13 + mov edx, DWORD PTR 104[ebp] + mov ecx, DWORD PTR 108[ebp] + xor edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor edi, ecx + ; round 12 + mov edx, DWORD PTR 96[ebp] + mov ecx, DWORD PTR 100[ebp] + add edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor esi, ecx + ; round 11 + mov edx, DWORD PTR 88[ebp] + mov ecx, DWORD PTR 92[ebp] + sub edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor edi, ecx + ; round 10 + mov edx, DWORD PTR 80[ebp] + mov ecx, DWORD PTR 84[ebp] + xor edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor esi, ecx + ; round 9 + mov edx, DWORD PTR 72[ebp] + mov ecx, DWORD PTR 76[ebp] + add edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor edi, ecx + ; round 8 + mov edx, DWORD PTR 64[ebp] + mov ecx, DWORD PTR 68[ebp] + sub edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor esi, ecx + ; round 7 + mov edx, DWORD PTR 56[ebp] + mov ecx, DWORD PTR 60[ebp] + xor edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor edi, ecx + ; round 6 + mov edx, DWORD PTR 48[ebp] + mov ecx, DWORD PTR 52[ebp] + add edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor esi, ecx + ; round 5 + mov edx, DWORD PTR 40[ebp] + mov ecx, DWORD PTR 44[ebp] + sub edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor edi, ecx + ; round 4 + mov edx, DWORD PTR 32[ebp] + mov ecx, DWORD PTR 36[ebp] + xor edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor esi, ecx + ; round 3 + mov edx, DWORD PTR 24[ebp] + mov ecx, DWORD PTR 28[ebp] + add edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + xor edi, ecx + ; round 2 + mov edx, DWORD PTR 16[ebp] + mov ecx, DWORD PTR 20[ebp] + sub edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + sub ecx, ebx + xor esi, ecx + ; round 1 + mov edx, DWORD PTR 8[ebp] + mov ecx, DWORD PTR 12[ebp] + xor edx, esi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + add ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + xor ecx, ebx + xor edi, ecx + ; round 0 + mov edx, DWORD PTR [ebp] + mov ecx, DWORD PTR 4[ebp] + add edx, edi + rol edx, cl + mov ebx, edx + xor ecx, ecx + mov cl, dh + and ebx, 255 + shr edx, 16 + xor eax, eax + mov al, dh + and edx, 255 + mov ecx, DWORD PTR _CAST_S_table0[ecx*4] + mov ebx, DWORD PTR _CAST_S_table1[ebx*4] + xor ecx, ebx + mov ebx, DWORD PTR _CAST_S_table2[eax*4] + sub ecx, ebx + mov ebx, DWORD PTR _CAST_S_table3[edx*4] + add ecx, ebx + mov eax, DWORD PTR 20[esp] + xor esi, ecx + nop + mov DWORD PTR 4[eax],edi + mov DWORD PTR [eax],esi + pop edi + pop esi + pop ebx + pop ebp + ret +_CAST_decrypt ENDP +_TEXT ENDS +_TEXT SEGMENT +PUBLIC _CAST_cbc_encrypt + +_CAST_cbc_encrypt PROC NEAR + ; + push ebp + push ebx + push esi + push edi + mov ebp, DWORD PTR 28[esp] + ; getting iv ptr from parameter 4 + mov ebx, DWORD PTR 36[esp] + mov esi, DWORD PTR [ebx] + mov edi, DWORD PTR 4[ebx] + push edi + push esi + push edi + push esi + mov ebx, esp + mov esi, DWORD PTR 36[esp] + mov edi, DWORD PTR 40[esp] + ; getting encrypt flag from parameter 5 + mov ecx, DWORD PTR 56[esp] + ; get and push parameter 3 + mov eax, DWORD PTR 48[esp] + push eax + push ebx + cmp ecx, 0 + jz $L000decrypt + and ebp, 4294967288 + mov eax, DWORD PTR 8[esp] + mov ebx, DWORD PTR 12[esp] + jz $L001encrypt_finish +L002encrypt_loop: + mov ecx, DWORD PTR [esi] + mov edx, DWORD PTR 4[esi] + xor eax, ecx + xor ebx, edx + bswap eax + bswap ebx + mov DWORD PTR 8[esp],eax + mov DWORD PTR 12[esp],ebx + call _CAST_encrypt + mov eax, DWORD PTR 8[esp] + mov ebx, DWORD PTR 12[esp] + bswap eax + bswap ebx + mov DWORD PTR [edi],eax + mov DWORD PTR 4[edi],ebx + add esi, 8 + add edi, 8 + sub ebp, 8 + jnz L002encrypt_loop +$L001encrypt_finish: + mov ebp, DWORD PTR 52[esp] + and ebp, 7 + jz $L003finish + xor ecx, ecx + xor edx, edx + mov ebp, DWORD PTR $L004cbc_enc_jmp_table[ebp*4] + jmp ebp +L005ej7: + xor edx, edx + mov dh, BYTE PTR 6[esi] + shl edx, 8 +L006ej6: + mov dh, BYTE PTR 5[esi] +L007ej5: + mov dl, BYTE PTR 4[esi] +L008ej4: + mov ecx, DWORD PTR [esi] + jmp $L009ejend +L010ej3: + mov ch, BYTE PTR 2[esi] + xor ecx, ecx + shl ecx, 8 +L011ej2: + mov ch, BYTE PTR 1[esi] +L012ej1: + mov cl, BYTE PTR [esi] +$L009ejend: + xor eax, ecx + xor ebx, edx + bswap eax + bswap ebx + mov DWORD PTR 8[esp],eax + mov DWORD PTR 12[esp],ebx + call _CAST_encrypt + mov eax, DWORD PTR 8[esp] + mov ebx, DWORD PTR 12[esp] + bswap eax + bswap ebx + mov DWORD PTR [edi],eax + mov DWORD PTR 4[edi],ebx + jmp $L003finish +$L000decrypt: + and ebp, 4294967288 + mov eax, DWORD PTR 16[esp] + mov ebx, DWORD PTR 20[esp] + jz $L013decrypt_finish +L014decrypt_loop: + mov eax, DWORD PTR [esi] + mov ebx, DWORD PTR 4[esi] + bswap eax + bswap ebx + mov DWORD PTR 8[esp],eax + mov DWORD PTR 12[esp],ebx + call _CAST_decrypt + mov eax, DWORD PTR 8[esp] + mov ebx, DWORD PTR 12[esp] + bswap eax + bswap ebx + mov ecx, DWORD PTR 16[esp] + mov edx, DWORD PTR 20[esp] + xor ecx, eax + xor edx, ebx + mov eax, DWORD PTR [esi] + mov ebx, DWORD PTR 4[esi] + mov DWORD PTR [edi],ecx + mov DWORD PTR 4[edi],edx + mov DWORD PTR 16[esp],eax + mov DWORD PTR 20[esp],ebx + add esi, 8 + add edi, 8 + sub ebp, 8 + jnz L014decrypt_loop +$L013decrypt_finish: + mov ebp, DWORD PTR 52[esp] + and ebp, 7 + jz $L003finish + mov eax, DWORD PTR [esi] + mov ebx, DWORD PTR 4[esi] + bswap eax + bswap ebx + mov DWORD PTR 8[esp],eax + mov DWORD PTR 12[esp],ebx + call _CAST_decrypt + mov eax, DWORD PTR 8[esp] + mov ebx, DWORD PTR 12[esp] + bswap eax + bswap ebx + mov ecx, DWORD PTR 16[esp] + mov edx, DWORD PTR 20[esp] + xor ecx, eax + xor edx, ebx + mov eax, DWORD PTR [esi] + mov ebx, DWORD PTR 4[esi] +L015dj7: + ror edx, 16 + mov BYTE PTR 6[edi],dl + shr edx, 16 +L016dj6: + mov BYTE PTR 5[edi],dh +L017dj5: + mov BYTE PTR 4[edi],dl +L018dj4: + mov DWORD PTR [edi],ecx + jmp $L019djend +L020dj3: + ror ecx, 16 + mov BYTE PTR 2[edi],cl + shl ecx, 16 +L021dj2: + mov BYTE PTR 1[esi],ch +L022dj1: + mov BYTE PTR [esi], cl +$L019djend: + jmp $L003finish +$L003finish: + 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 +$L004cbc_enc_jmp_table: + DD 0 + DD L012ej1 + DD L011ej2 + DD L010ej3 + DD L008ej4 + DD L007ej5 + DD L006ej6 + DD L005ej7 +L023cbc_dec_jmp_table: + DD 0 + DD L022dj1 + DD L021dj2 + DD L020dj3 + DD L018dj4 + DD L017dj5 + DD L016dj6 + DD L015dj7 +_CAST_cbc_encrypt ENDP +_TEXT ENDS +END |