Function at 0x420bbc
Capabilities:
Encode data using xor
Hash data with crc32

Disassembly:
push esi
push ebx
mov ecx, dword [esp + 0x10]
mov eax, dword [esp + 0x14]
mov edx, dword [esp + 0xc]
not edx
test eax, eax
je 0x420c9e
cmp eax, 6
jb 0x420c7f
test cl, 3
je 0x420c9e
movzx ebx, byte [ecx]
xor ebx, edx
movzx ebx, bl
shr edx, 8
add eax, 0xffffffff
add ecx, 1
xor edx, dword [ebx*4 + 0x427280]
test cl, 3
je 0x420c9e
movzx ebx, byte [ecx]
xor ebx, edx
movzx ebx, bl
shr edx, 8
add eax, 0xffffffff
add ecx, 1
xor edx, dword [ebx*4 + 0x427280]
test cl, 3
je 0x420c9e
movzx ebx, byte [ecx]
xor ebx, edx
movzx ebx, bl
shr edx, 8
add eax, 0xffffffff
add ecx, 1
xor edx, dword [ebx*4 + 0x427280]
test cl, 3
je 0x420c9e
movzx ebx, byte [ecx]
xor ebx, edx
movzx ebx, bl
shr edx, 8
add eax, 0xffffffff
add ecx, 1
xor edx, dword [ebx*4 + 0x427280]
test cl, 3
je 0x420c9e
movzx ebx, byte [ecx]
xor ebx, edx
movzx ebx, bl
shr edx, 8
add eax, 0xffffffff
add ecx, 1
xor edx, dword [ebx*4 + 0x427280]
cmp eax, 6
jae 0x420bdd
test cl, 3
je 0x420c9e
movzx ebx, byte [ecx]
xor ebx, edx
movzx ebx, bl
shr edx, 8
add ecx, 1
xor edx, dword [ebx*4 + 0x427280]
add eax, 0xffffffff
jne 0x420c7f
cmp eax, 0x20
jb 0x420e86
xor edx, dword [ecx]
movzx ebx, dl
mov ebx, dword [ebx*4 + 0x427e80]
mov esi, edx
shr esi, 8
and esi, 0xff
xor ebx, dword [esi*4 + 0x427a80]
mov esi, edx
shr esi, 0x10
and esi, 0xff
xor ebx, dword [esi*4 + 0x427680]
shr edx, 0x18
add eax, 0xffffffe0
xor ebx, dword [edx*4 + 0x427280]
xor ebx, dword [ecx + 4]
movzx edx, bl
mov edx, dword [edx*4 + 0x427e80]
mov esi, ebx
shr esi, 8
and esi, 0xff
xor edx, dword [esi*4 + 0x427a80]
mov esi, ebx
shr esi, 0x10
and esi, 0xff
shr ebx, 0x18
xor edx, dword [esi*4 + 0x427680]
xor edx, dword [ebx*4 + 0x427280]
xor edx, dword [ecx + 8]
movzx ebx, dl
mov esi, edx
shr esi, 8
mov ebx, dword [ebx*4 + 0x427e80]
and esi, 0xff
xor ebx, dword [esi*4 + 0x427a80]
mov esi, edx
shr esi, 0x10
and esi, 0xff
xor ebx, dword [esi*4 + 0x427680]
shr edx, 0x18
xor ebx, dword [edx*4 + 0x427280]
xor ebx, dword [ecx + 0xc]
movzx edx, bl
mov edx, dword [edx*4 + 0x427e80]
mov esi, ebx
shr esi, 8
and esi, 0xff
xor edx, dword [esi*4 + 0x427a80]
mov esi, ebx
shr esi, 0x10
and esi, 0xff
shr ebx, 0x18
xor edx, dword [esi*4 + 0x427680]
xor edx, dword [ebx*4 + 0x427280]
xor edx, dword [ecx + 0x10]
movzx ebx, dl
mov esi, dword [ebx*4 + 0x427e80]
mov ebx, edx
shr ebx, 8
movzx ebx, bl
xor esi, dword [ebx*4 + 0x427a80]
mov ebx, edx
shr ebx, 0x10
movzx ebx, bl
shr edx, 0x18
xor esi, dword [ebx*4 + 0x427680]
xor esi, dword [edx*4 + 0x427280]
xor esi, dword [ecx + 0x14]
mov edx, esi
and edx, 0xff
mov ebx, esi
shr ebx, 8
mov edx, dword [edx*4 + 0x427e80]
movzx ebx, bl
xor edx, dword [ebx*4 + 0x427a80]
mov ebx, esi
shr ebx, 0x10
movzx ebx, bl
xor edx, dword [ebx*4 + 0x427680]
shr esi, 0x18
xor edx, dword [esi*4 + 0x427280]
xor edx, dword [ecx + 0x18]
movzx ebx, dl
mov ebx, dword [ebx*4 + 0x427e80]
mov esi, edx
shr esi, 8
and esi, 0xff
xor ebx, dword [esi*4 + 0x427a80]
mov esi, edx
shr esi, 0x10
and esi, 0xff
shr edx, 0x18
xor ebx, dword [esi*4 + 0x427680]
xor ebx, dword [edx*4 + 0x427280]
xor ebx, dword [ecx + 0x1c]
movzx edx, bl
mov esi, ebx
shr esi, 8
mov edx, dword [edx*4 + 0x427e80]
and esi, 0xff
xor edx, dword [esi*4 + 0x427a80]
mov esi, ebx
shr esi, 0x10
and esi, 0xff
xor edx, dword [esi*4 + 0x427680]
shr ebx, 0x18
add ecx, 0x20
xor edx, dword [ebx*4 + 0x427280]
cmp eax, 0x20
jae 0x420ca7
cmp eax, 4
jb 0x420f9c
lea ebx, [eax - 4]
cmp ebx, 0x10
jb 0x420f53
xor edx, dword [ecx]
movzx ebx, dl
mov esi, dword [ebx*4 + 0x427e80]
mov ebx, edx
shr ebx, 8
movzx ebx, bl
xor esi, dword [ebx*4 + 0x427a80]
mov ebx, edx
shr ebx, 0x10
movzx ebx, bl
xor esi, dword [ebx*4 + 0x427680]
shr edx, 0x18
add eax, 0xfffffff4
xor esi, dword [edx*4 + 0x427280]
xor esi, dword [ecx + 4]
mov edx, esi
and edx, 0xff
mov ebx, dword [edx*4 + 0x427e80]
mov edx, esi
shr edx, 8
movzx edx, dl
xor ebx, dword [edx*4 + 0x427a80]
mov edx, esi
shr edx, 0x10
movzx edx, dl
shr esi, 0x18
xor ebx, dword [edx*4 + 0x427680]
xor ebx, dword [esi*4 + 0x427280]
xor ebx, dword [ecx + 8]
movzx edx, bl
mov esi, ebx
shr esi, 8
mov edx, dword [edx*4 + 0x427e80]
and esi, 0xff
xor edx, dword [esi*4 + 0x427a80]
mov esi, ebx
shr esi, 0x10
and esi, 0xff
xor edx, dword [esi*4 + 0x427680]
shr ebx, 0x18
add ecx, 0xc
xor edx, dword [ebx*4 + 0x427280]
cmp eax, 0x14
jae 0x420e9b
xor edx, dword [ecx]
movzx esi, dl
mov ebx, dword [esi*4 + 0x427e80]
mov esi, edx
shr esi, 8
and esi, 0xff
xor ebx, dword [esi*4 + 0x427a80]
mov esi, edx
shr esi, 0x10
and esi, 0xff
xor ebx, dword [esi*4 + 0x427680]
shr edx, 0x18
mov esi, edx
mov edx, ebx
xor edx, dword [esi*4 + 0x427280]
add eax, 0xfffffffc
add ecx, 4
cmp eax, 4
jae 0x420f53
test eax, eax
je 0x420fba
movzx ebx, byte [ecx]
xor ebx, edx
movzx ebx, bl
shr edx, 8
add ecx, 1
xor edx, dword [ebx*4 + 0x427280]
add eax, 0xffffffff
jne 0x420fa0
not edx
mov eax, edx
pop ebx
pop esi
ret