235 lines
12 KiB
PHP
235 lines
12 KiB
PHP
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; DES routines (from http://board.flatassembler.net/topic.php?t=5575)
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; Copyright (C) 2006, Tomasz Grysztar
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macro perm_it ebx, edx, shift, mask
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{
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mov eax, ebx
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shr eax, shift
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xor eax, edx
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and eax, mask
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xor edx, eax
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shl eax, shift
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xor ebx, eax
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}
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encrypt_DES:
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; esi - DES key (8 bytes)
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; edx:ebx = data
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; return: edx:ebx = encrypted data
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bswap ebx
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bswap edx
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perm_it ebx, edx, 4, 0F0F0F0Fh
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perm_it ebx, edx, 16, 0000FFFFh
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perm_it edx, ebx, 2, 33333333h
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perm_it edx, ebx, 8, 00FF00FFh
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perm_it ebx, edx, 1, 55555555h
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rol ebx, 1
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rol edx, 1
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mov esi, keys
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call DES_inner_encrypt
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ror ebx, 1
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ror edx, 1
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perm_it ebx, edx, 1, 55555555h
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perm_it edx, ebx, 8, 00FF00FFh
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perm_it edx, ebx, 2, 33333333h
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perm_it ebx, edx, 16, 0000FFFFh
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perm_it ebx, edx, 4, 0F0F0F0Fh
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bswap ebx
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bswap edx
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ret
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DES_create_keys:
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; edi - ptr to keys (32*2 dwords)
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; edx:ebx = password
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perm_it ebx, edx, 4, 0F0F0F0Fh
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perm_it edx, ebx, 16, 0000FFFFh
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perm_it ebx, edx, 2, 33333333h
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perm_it edx, ebx, 16, 0000FFFFh
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perm_it ebx, edx, 1, 55555555h
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perm_it edx, ebx, 8, 00FF00FFh
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perm_it ebx, edx, 1, 55555555h
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mov eax, ebx
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shl eax, 8
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mov ebx, edx
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bswap ebx
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and ebx, 0FFFFFFF0h
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xchg edx, eax
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ror eax, 20
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and eax, 0xF0
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or edx, eax
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xor ecx, ecx
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create_keys:
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test byte [shifts+ecx], 0ffh
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jz no_shift
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mov eax, ebx
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shl eax, 2
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shr ebx, 26
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or ebx, eax
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mov eax, edx
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shl eax, 2
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shr edx, 26
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or edx, eax
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jmp shift_ok
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no_shift:
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mov eax, ebx
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shl eax, 1
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shr ebx, 27
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or ebx, eax
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mov eax, edx
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shl eax, 1
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shr edx, 27
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or edx, eax
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shift_ok:
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and ebx, 0FFFFFFF0h
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and edx, 0FFFFFFF0h
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mov eax, ebx
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shr eax, 28
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mov ebp, [pc2_0+eax*4]
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mov eax, ebx
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shr eax, 24
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and eax, 0Fh
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or ebp, [pc2_1+eax*4]
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mov eax, ebx
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shr eax, 20
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and eax, 0Fh
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or ebp, [pc2_2+eax*4]
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mov eax, ebx
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shr eax, 16
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and eax, 0Fh
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or ebp, [pc2_3+eax*4]
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mov eax, ebx
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shr eax, 12
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and eax, 0Fh
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or ebp, [pc2_4+eax*4]
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mov eax, ebx
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shr eax, 8
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and eax, 0Fh
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or ebp, [pc2_5+eax*4]
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mov eax, ebx
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shr eax, 4
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and eax, 0Fh
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or ebp, [pc2_6+eax*4]
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mov [edi], ebp
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mov eax, edx
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shr eax, 28
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and eax, 0Fh
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mov ebp, [pc2_7+eax*4]
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mov eax, edx
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shr eax, 24
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and eax, 0Fh
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or ebp, [pc2_8+eax*4]
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mov eax, edx
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shr eax, 20
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and eax, 0Fh
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or ebp, [pc2_9+eax*4]
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mov eax, edx
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shr eax, 16
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and eax, 0Fh
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or ebp, [pc2_10+eax*4]
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mov eax, edx
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shr eax, 12
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and eax, 0Fh
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or ebp, [pc2_11+eax*4]
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mov eax, edx
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shr eax, 8
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and eax, 0Fh
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or ebp, [pc2_12+eax*4]
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mov eax, edx
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shr eax, 4
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and eax, 0Fh
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or ebp, [pc2_13+eax*4]
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mov eax, ebp
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shr eax, 16
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xor eax, [edi]
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and eax, 0FFFFh
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xor [edi], eax
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shl eax, 16
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xor ebp, eax
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mov [edi+4], ebp
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add edi, 8
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inc ecx
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cmp ecx, 16
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jb create_keys
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ret
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DES_inner_encrypt:
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xor ecx, ecx
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.encrypt:
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mov edi, edx
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ror edi, 4
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xor edi, [esi+(ecx+1)*4]
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push esi
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mov esi, [esi+ecx*4]
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xor esi, edx
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mov ebp, ebx
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mov ebx, edx
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mov eax, esi
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shr eax, 24
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and eax, 3Fh
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mov edx, [sbox_2+eax*4]
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mov eax, esi
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shr eax, 16
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and eax, 3Fh
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or edx, [sbox_4+eax*4]
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mov eax, esi
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shr eax, 8
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and eax, 3Fh
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or edx, [sbox_6+eax*4]
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mov eax, esi
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and eax, 3Fh
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or edx, [sbox_8+eax*4]
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pop esi
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mov eax, edi
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shr eax, 24
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and eax, 3Fh
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or edx, [sbox_1+eax*4]
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mov eax, edi
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shr eax, 16
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and eax, 3Fh
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or edx, [sbox_3+eax*4]
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mov eax, edi
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shr eax, 8
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and eax, 3Fh
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or edx, [sbox_5+eax*4]
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mov eax, edi
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and eax, 3Fh
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or edx, [sbox_7+eax*4]
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xor edx, ebp
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add ecx, 2
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cmp ecx, 32
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jb .encrypt
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xchg ebx, edx
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ret
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shifts db 0, 0, 1, 1, 1, 1, 1, 1, 0, 1, 1, 1, 1, 1, 1, 0
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pc2_0 dd 0, 0x4, 0x20000000, 0x20000004, 0x10000, 0x10004, 0x20010000, 0x20010004, 0x200, 0x204, 0x20000200, 0x20000204, 0x10200, 0x10204, 0x20010200, 0x20010204
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pc2_1 dd 0, 0x1, 0x100000, 0x100001, 0x4000000, 0x4000001, 0x4100000, 0x4100001, 0x100, 0x101, 0x100100, 0x100101, 0x4000100, 0x4000101, 0x4100100, 0x4100101
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pc2_2 dd 0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808, 0, 0x8, 0x800, 0x808, 0x1000000, 0x1000008, 0x1000800, 0x1000808
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pc2_3 dd 0, 0x200000, 0x8000000, 0x8200000, 0x2000, 0x202000, 0x8002000, 0x8202000, 0x20000, 0x220000, 0x8020000, 0x8220000, 0x22000, 0x222000, 0x8022000, 0x8222000
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pc2_4 dd 0, 0x40000, 0x10, 0x40010, 0, 0x40000, 0x10, 0x40010, 0x1000, 0x41000, 0x1010, 0x41010, 0x1000, 0x41000, 0x1010, 0x41010
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pc2_5 dd 0, 0x400, 0x20, 0x420, 0, 0x400, 0x20, 0x420, 0x2000000, 0x2000400, 0x2000020, 0x2000420, 0x2000000, 0x2000400, 0x2000020, 0x2000420
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pc2_6 dd 0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002, 0, 0x10000000, 0x80000, 0x10080000, 0x2, 0x10000002, 0x80002, 0x10080002
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pc2_7 dd 0, 0x10000, 0x800, 0x10800, 0x20000000, 0x20010000, 0x20000800, 0x20010800, 0x20000, 0x30000, 0x20800, 0x30800, 0x20020000, 0x20030000, 0x20020800, 0x20030800
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pc2_8 dd 0, 0x40000, 0, 0x40000, 0x2, 0x40002, 0x2, 0x40002, 0x2000000, 0x2040000, 0x2000000, 0x2040000, 0x2000002, 0x2040002, 0x2000002, 0x2040002
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pc2_9 dd 0, 0x10000000, 0x8, 0x10000008, 0, 0x10000000, 0x8, 0x10000008, 0x400, 0x10000400, 0x408, 0x10000408, 0x400, 0x10000400, 0x408, 0x10000408
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pc2_10 dd 0, 0x20, 0, 0x20, 0x100000, 0x100020, 0x100000, 0x100020, 0x2000, 0x2020, 0x2000, 0x2020, 0x102000, 0x102020, 0x102000, 0x102020
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pc2_11 dd 0, 0x1000000, 0x200, 0x1000200, 0x200000, 0x1200000, 0x200200, 0x1200200, 0x4000000, 0x5000000, 0x4000200, 0x5000200, 0x4200000, 0x5200000, 0x4200200, 0x5200200
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pc2_12 dd 0, 0x1000, 0x8000000, 0x8001000, 0x80000, 0x81000, 0x8080000, 0x8081000, 0x10, 0x1010, 0x8000010, 0x8001010, 0x80010, 0x81010, 0x8080010, 0x8081010
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pc2_13 dd 0, 0x4, 0x100, 0x104, 0, 0x4, 0x100, 0x104, 0x1, 0x5, 0x101, 0x105, 0x1, 0x5, 0x101, 0x105
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sbox_1 dd 0x1010400, 0, 0x10000, 0x1010404, 0x1010004, 0x10404, 0x4, 0x10000, 0x400, 0x1010400, 0x1010404, 0x400, 0x1000404, 0x1010004, 0x1000000, 0x4, 0x404, 0x1000400, 0x1000400, 0x10400, 0x10400, 0x1010000, 0x1010000, 0x1000404, 0x10004, 0x1000004, 0x1000004, 0x10004, 0, 0x404, 0x10404, 0x1000000, 0x10000, 0x1010404, 0x4, 0x1010000, 0x1010400, 0x1000000, 0x1000000, 0x400, 0x1010004, 0x10000, 0x10400, 0x1000004, 0x400, 0x4, 0x1000404, 0x10404, 0x1010404, 0x10004, 0x1010000, 0x1000404, 0x1000004, 0x404, 0x10404, 0x1010400, 0x404, 0x1000400, 0x1000400, 0, 0x10004, 0x10400, 0, 0x1010004
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sbox_2 dd 0x80108020, 0x80008000, 0x8000, 0x108020, 0x100000, 0x20, 0x80100020, 0x80008020, 0x80000020, 0x80108020, 0x80108000, 0x80000000, 0x80008000, 0x100000, 0x20, 0x80100020, 0x108000, 0x100020, 0x80008020, 0, 0x80000000, 0x8000, 0x108020, 0x80100000, 0x100020, 0x80000020, 0, 0x108000, 0x8020, 0x80108000, 0x80100000, 0x8020, 0, 0x108020, 0x80100020, 0x100000, 0x80008020, 0x80100000, 0x80108000, 0x8000, 0x80100000, 0x80008000, 0x20, 0x80108020, 0x108020, 0x20, 0x8000, 0x80000000, 0x8020, 0x80108000, 0x100000, 0x80000020, 0x100020, 0x80008020, 0x80000020, 0x100020, 0x108000, 0, 0x80008000, 0x8020, 0x80000000, 0x80100020, 0x80108020, 0x108000
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sbox_3 dd 0x208, 0x8020200, 0, 0x8020008, 0x8000200, 0, 0x20208, 0x8000200, 0x20008, 0x8000008, 0x8000008, 0x20000, 0x8020208, 0x20008, 0x8020000, 0x208, 0x8000000, 0x8, 0x8020200, 0x200, 0x20200, 0x8020000, 0x8020008, 0x20208, 0x8000208, 0x20200, 0x20000, 0x8000208, 0x8, 0x8020208, 0x200, 0x8000000, 0x8020200, 0x8000000, 0x20008, 0x208, 0x20000, 0x8020200, 0x8000200, 0, 0x200, 0x20008, 0x8020208, 0x8000200, 0x8000008, 0x200, 0, 0x8020008, 0x8000208, 0x20000, 0x8000000, 0x8020208, 0x8, 0x20208, 0x20200, 0x8000008, 0x8020000, 0x8000208, 0x208, 0x8020000, 0x20208, 0x8, 0x8020008, 0x20200
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sbox_4 dd 0x802001, 0x2081, 0x2081, 0x80, 0x802080, 0x800081, 0x800001, 0x2001, 0, 0x802000, 0x802000, 0x802081, 0x81, 0, 0x800080, 0x800001, 0x1, 0x2000, 0x800000, 0x802001, 0x80, 0x800000, 0x2001, 0x2080, 0x800081, 0x1, 0x2080, 0x800080, 0x2000, 0x802080, 0x802081, 0x81, 0x800080, 0x800001, 0x802000, 0x802081, 0x81, 0, 0, 0x802000, 0x2080, 0x800080, 0x800081, 0x1, 0x802001, 0x2081, 0x2081, 0x80, 0x802081, 0x81, 0x1, 0x2000, 0x800001, 0x2001, 0x802080, 0x800081, 0x2001, 0x2080, 0x800000, 0x802001, 0x80, 0x800000, 0x2000, 0x802080
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sbox_5 dd 0x100, 0x2080100, 0x2080000, 0x42000100, 0x80000, 0x100, 0x40000000, 0x2080000, 0x40080100, 0x80000, 0x2000100, 0x40080100, 0x42000100, 0x42080000, 0x80100, 0x40000000, 0x2000000, 0x40080000, 0x40080000, 0, 0x40000100, 0x42080100, 0x42080100, 0x2000100, 0x42080000, 0x40000100, 0, 0x42000000, 0x2080100, 0x2000000, 0x42000000, 0x80100, 0x80000, 0x42000100, 0x100, 0x2000000, 0x40000000, 0x2080000, 0x42000100, 0x40080100, 0x2000100, 0x40000000, 0x42080000, 0x2080100, 0x40080100, 0x100, 0x2000000, 0x42080000, 0x42080100, 0x80100, 0x42000000, 0x42080100, 0x2080000, 0, 0x40080000, 0x42000000, 0x80100, 0x2000100, 0x40000100, 0x80000, 0, 0x40080000, 0x2080100, 0x40000100
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sbox_6 dd 0x20000010, 0x20400000, 0x4000, 0x20404010, 0x20400000, 0x10, 0x20404010, 0x400000, 0x20004000, 0x404010, 0x400000, 0x20000010, 0x400010, 0x20004000, 0x20000000, 0x4010, 0, 0x400010, 0x20004010, 0x4000, 0x404000, 0x20004010, 0x10, 0x20400010, 0x20400010, 0, 0x404010, 0x20404000, 0x4010, 0x404000, 0x20404000, 0x20000000, 0x20004000, 0x10, 0x20400010, 0x404000, 0x20404010, 0x400000, 0x4010, 0x20000010, 0x400000, 0x20004000, 0x20000000, 0x4010, 0x20000010, 0x20404010, 0x404000, 0x20400000, 0x404010, 0x20404000, 0, 0x20400010, 0x10, 0x4000, 0x20400000, 0x404010, 0x4000, 0x400010, 0x20004010, 0, 0x20404000, 0x20000000, 0x400010, 0x20004010
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sbox_7 dd 0x200000, 0x4200002, 0x4000802, 0, 0x800, 0x4000802, 0x200802, 0x4200800, 0x4200802, 0x200000, 0, 0x4000002, 0x2, 0x4000000, 0x4200002, 0x802, 0x4000800, 0x200802, 0x200002, 0x4000800, 0x4000002, 0x4200000, 0x4200800, 0x200002, 0x4200000, 0x800, 0x802, 0x4200802, 0x200800, 0x2, 0x4000000, 0x200800, 0x4000000, 0x200800, 0x200000, 0x4000802, 0x4000802, 0x4200002, 0x4200002, 0x2, 0x200002, 0x4000000, 0x4000800, 0x200000, 0x4200800, 0x802, 0x200802, 0x4200800, 0x802, 0x4000002, 0x4200802, 0x4200000, 0x200800, 0, 0x2, 0x4200802, 0, 0x200802, 0x4200000, 0x800, 0x4000002, 0x4000800, 0x800, 0x200002
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sbox_8 dd 0x10001040, 0x1000, 0x40000, 0x10041040, 0x10000000, 0x10001040, 0x40, 0x10000000, 0x40040, 0x10040000, 0x10041040, 0x41000, 0x10041000, 0x41040, 0x1000, 0x40, 0x10040000, 0x10000040, 0x10001000, 0x1040, 0x41000, 0x40040, 0x10040040, 0x10041000, 0x1040, 0, 0, 0x10040040, 0x10000040, 0x10001000, 0x41040, 0x40000, 0x41040, 0x40000, 0x10041000, 0x1000, 0x40, 0x10040040, 0x1000, 0x41040, 0x10001000, 0x40, 0x10000040, 0x10040000, 0x10040040, 0x10000000, 0x40000, 0x10001040, 0, 0x10041040, 0x40040, 0x10000040, 0x10040000, 0x10001000, 0x10001040, 0, 0x10041040, 0x41000, 0x41000, 0x1040, 0x1040, 0x40040, 0x10000000, 0x10041000
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