google pagerank checksum算法

原来网上早就有了checksum的相关破解，下面试checksum的汇编代码和vb版的破解。
目前我所用的就是vb版的checksum代码。
checksum的汇编代码：
GOOGLECHECK proc near
var_8 = dword ptr -8
var_4 = dword ptr -4
url_offset = dword ptr  8
url_length = dword ptr  0Ch
magic_dword = dword ptr  10h
push ebp
mov ebp, esp
push ecx
push ecx
mov eax, [ebp+url_length]
cmp eax, 0Ch
push ebx
push esi
mov esi, [ebp+magic_dword] ; = 0xE6359A60
push edi
mov edi, 9E3779B9h ; derived from the golden number, hi TEA ;)
mov ebx, edi
mov [ebp+var_4], eax
jb jump_1
push 0Ch
pop ecx
xor edx, edx
div ecx
mov ecx, [ebp+url_offset]
mov [ebp+var_8], eax
loop_1:
movzx eax, byte ptr [ecx+7]
movzx edx, byte ptr [ecx+6]
shl eax, 8
add eax, edx
movzx edx, byte ptr [ecx+5]
shl eax, 8
add eax, edx
movzx edx, byte ptr [ecx+4]
add edx, edi
shl eax, 8
lea edi, [edx+eax]
movzx eax, byte ptr [ecx+0Bh]
movzx edx, byte ptr [ecx+0Ah]
shl eax, 8
add eax, edx
movzx edx, byte ptr [ecx+9]
shl eax, 8
add eax, edx
movzx edx, byte ptr [ecx+8]
add edx, esi
shl eax, 8
lea esi, [edx+eax]
movzx edx, byte ptr [ecx+3]
movzx eax, byte ptr [ecx+2]
shl edx, 8
add edx, eax
movzx eax, byte ptr [ecx+1]
shl edx, 8
add edx, eax
movzx eax, byte ptr [ecx]
shl edx, 8
add edx, eax
sub edx, edi
sub edx, esi
mov eax, esi
shr eax, 0Dh
add edx, ebx
xor edx, eax
sub edi, edx
sub edi, esi
mov eax, edx
shl eax, 8
xor edi, eax
sub esi, edi
sub esi, edx
mov eax, edi
shr eax, 0Dh
xor esi, eax
sub edx, edi
sub edx, esi
mov eax, esi
shr eax, 0Ch
xor edx, eax
sub edi, edx
sub edi, esi
mov eax, edx
shl eax, 10h
xor edi, eax