Function at 0x100516a0
Capabilities:
Authenticate hmac
Encode data using xor

Disassembly:
push ebp
mov ebp, esp
push 0xffffffffffffffff
push 0x100ad400
mov eax, dword fs:[0]
push eax
sub esp, 0x5c
push ebx
push esi
push edi
mov eax, dword [0x100d6084]
xor eax, ebp
push eax
lea eax, [ebp - 0xc]
mov dword fs:[0], eax
mov esi, ecx
movzx eax, word [esi + 0xfa]
xor ecx, ecx
movaps xmm0, xmmword [0x100c8830]
push eax
movzx eax, word [esi + 0xf8]
push eax
movups xmmword [ebp - 0x34], xmm0
mov dword [ebp - 0x24], 0x296862
nop
mov al, byte [ebp - 0x34]
xor byte [ebp + ecx - 0x33], al
inc ecx
cmp ecx, 0x12
jb 0x100516f0
sub esp, 0x18
mov byte [ebp - 0x21], 0
mov edx, esp
mov dword [edx + 0x14], 0xf
mov dword [edx + 0x10], 0
cmp dword [edx + 0x14], 0x10
jb 0x1005171e
mov eax, dword [edx]
jmp 0x10051720
mov eax, edx
mov byte [eax], 0
cmp byte [ebp - 0x33], 0
jne 0x1005172d
xor ecx, ecx
jmp 0x1005173c
lea ecx, [ebp - 0x33]
lea edi, [ecx + 1]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x10051733
sub ecx, edi
push ecx
lea eax, [ebp - 0x33]
mov ecx, edx
push eax
call fcn.10002840
lea eax, [ebp - 0x50]
push eax
call fcn.1000f620
add esp, 0x24
mov dword [ebp - 4], 0
mov edx, eax
mov ecx, dword [esi + 0x50]
call fcn.1001c1c0
mov dword [ebp - 4], 0xffffffff
mov eax, dword [ebp - 0x3c]
cmp eax, 0x10
jb 0x10051781
inc eax
lea ecx, [ebp - 0x50]
push eax
push dword [ebp - 0x50]
call fcn.10002720
movzx eax, word [esi + 0xfc]
test ax, ax
jne 0x10051808
mov cl, 0x3a
mov byte [ebp - 0xe], 0
mov al, 0x17
mov byte [ebp - 0x10], cl
xor al, cl
mov byte [ebp - 0xe], 0
mov byte [ebp - 0xf], al
mov dword [ebp - 0x24], 0xf
mov dword [ebp - 0x28], 0
mov byte [ebp - 0x38], 0
jne 0x100517b9
xor ecx, ecx
jmp 0x100517c9
lea ecx, [ebp - 0xf]
lea edx, [ecx + 1]
nop
mov al, byte [ecx]
inc ecx
test al, al
jne 0x100517c0
sub ecx, edx
push ecx
lea eax, [ebp - 0xf]
push eax
lea ecx, [ebp - 0x38]
call fcn.10002840
mov dword [ebp - 4], 1
lea edx, [ebp - 0x38]
mov ecx, dword [esi + 0x54]
call fcn.1001c1c0
mov dword [ebp - 4], 0xffffffff
mov eax, dword [ebp - 0x24]
cmp eax, 0x10
jb 0x100518ae
inc eax
lea ecx, [ebp - 0x38]
push eax
push dword [ebp - 0x38]
jmp 0x100518a9
mov bl, 0x21
mov byte [ebp - 0x14], 0
push eax
mov dl, 0x45
mov byte [ebp - 0x18], bl
xor dl, bl
mov byte [ebp - 0x14], 0
mov byte [ebp - 0x15], dl
sub esp, 0x18
mov edx, esp
mov al, 2
mov cl, 4
xor al, bl
xor cl, bl
mov byte [ebp - 0x17], al
mov byte [ebp - 0x16], cl
mov dword [edx + 0x14], 0xf
mov dword [edx + 0x10], 0
cmp dword [edx + 0x14], 0x10
jb 0x10051848
mov eax, dword [edx]
jmp 0x1005184a
mov eax, edx
mov byte [eax], 0
cmp byte [ebp - 0x17], 0
jne 0x10051857
xor ecx, ecx
jmp 0x10051869
lea ecx, [ebp - 0x17]
lea edi, [ecx + 1]
nop dword [eax]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x10051860
sub ecx, edi
push ecx
lea eax, [ebp - 0x17]
mov ecx, edx
push eax
call fcn.10002840
lea eax, [ebp - 0x50]
push eax
call fcn.1000f620
add esp, 0x20
mov dword [ebp - 4], 2
mov edx, eax
mov ecx, dword [esi + 0x54]
call fcn.1001c1c0
mov dword [ebp - 4], 0xffffffff
mov eax, dword [ebp - 0x3c]
cmp eax, 0x10
jb 0x100518ae
inc eax
lea ecx, [ebp - 0x50]
push eax
push dword [ebp - 0x50]
call fcn.10002720
movzx eax, word [esi + 0xf8]
mov dh, 0x50
movss xmm1, dword [0x100c7e88]
mov dl, 0x62
xor dl, dh
mov byte [ebp - 0x20], dh
sub esp, 0x20
mov byte [ebp - 0x1d], dl
movd xmm0, eax
mov cl, 0x7e
cvtdq2ps xmm0, xmm0
mov al, 0x75
mov byte [ebp - 0x19], 0
mov ah, al
mov byte [ebp - 0x19], 0
mov ch, ah
mov bl, 0x36
xor al, dh
xor cl, dh
xor bl, dh
mov byte [ebp - 0x1f], al
divss xmm1, xmm0
xor ah, dh
mov byte [ebp - 0x1e], cl
xor ch, dh
mov byte [ebp - 0x1c], bl
mov edx, esp
mov byte [ebp - 0x1b], ah
mov byte [ebp - 0x1a], ch
mov dword [edx + 0x14], 0xf
mov dword [edx + 0x10], 0
cmp dword [edx + 0x14], 0x10
cvtps2pd xmm0, xmm1
movsd qword [esp + 0x18], xmm0
jb 0x10051925
mov eax, dword [edx]
jmp 0x10051927
mov eax, edx
mov byte [eax], 0
cmp byte [ebp - 0x1f], 0
jne 0x10051934
xor ecx, ecx
jmp 0x10051949
lea ecx, [ebp - 0x1f]
lea edi, [ecx + 1]
nop word [eax + eax]
mov al, byte [ecx]
inc ecx
test al, al
jne 0x10051940
sub ecx, edi
push ecx
lea eax, [ebp - 0x1f]
mov ecx, edx
push eax
call fcn.10002840
lea eax, [ebp - 0x68]
push eax
call fcn.1000f620
add esp, 0x24
mov dword [ebp - 4], 3
mov edx, eax
mov ecx, dword [esi + 0x58]
call fcn.1001c1c0
mov eax, dword [ebp - 0x54]
cmp eax, 0x10
jb 0x10051987
inc eax
lea ecx, [ebp - 0x68]
push eax
push dword [ebp - 0x68]
call fcn.10002720
mov ecx, dword [ebp - 0xc]
mov dword fs:[0], ecx
pop ecx
pop edi
pop esi
pop ebx
mov esp, ebp
pop ebp
ret