Function at 0x4ff930
Capabilities:
Authenticate hmac
Encode data using xor

Disassembly:
mov eax, 0x130
call fcn.0057a200
mov eax, dword [0x5faea4]
xor eax, esp
mov dword [esp + 0x12c], eax
mov eax, dword [esp + 0x144]
push ebx
mov ebx, dword [esp + 0x138]
push ebp
mov ebp, dword [esp + 0x140]
push esi
mov esi, dword [esp + 0x148]
push edi
mov edi, dword [esp + 0x150]
mov dword [esp + 0x14], eax
mov dword [esp + 0x18], 0
test edi, edi
je 0x4ff997
cmp edi, dword [ebx]
je 0x4ff993
test ebp, ebp
je 0x4ffbf2
test esi, esi
js 0x4ffbf2
mov dword [ebx], edi
jmp 0x4ff9a1
mov edi, dword [ebx]
test edi, edi
je 0x4ffbf2
push edi
call fcn.0045b060
add esp, 4
test al, 2
jne 0x4ffbf2
test ebp, ebp
je 0x4ffba5
push edi
mov dword [esp + 0x1c], 1
call fcn.004645c0
add esp, 4
cmp eax, 0x90
jg 0x4ffbf2
test eax, eax
js 0x4ffbf2
cmp eax, esi
jge 0x4ffa32
push dword [esp + 0x14]
push edi
push dword [ebx + 4]
call fcn.00480210
add esp, 0xc
test eax, eax
je 0x4ffbf2
push esi
push ebp
push dword [ebx + 4]
call fcn.00480250
add esp, 0xc
test eax, eax
je 0x4ffbf2
lea eax, [esp + 0x10]
push eax
lea eax, [esp + 0x20]
push eax
push dword [ebx + 4]
call fcn.00480020
add esp, 0xc
test eax, eax
je 0x4ffbf2
mov esi, dword [esp + 0x10]
jmp 0x4ffa51
cmp esi, 0x90
ja 0x4ffbf2
push esi
lea eax, [esp + 0x20]
push ebp
push eax
call sub.VCRUNTIME140.dll_memcpy
add esp, 0xc
mov dword [esp + 0x10], esi
cmp esi, 0x90
je 0x4ffa72
mov eax, 0x90
sub eax, esi
push eax
lea eax, [esp + 0x20]
add eax, esi
push 0
push eax
call sub.VCRUNTIME140.dll_memset
add esp, 0xc
movaps xmm1, xmmword [str.6666666666666666crypto_bn_bn_blind.c]
xor ecx, ecx
nop dword [eax + eax]
movups xmm0, xmmword [esp + ecx + 0x1c]
pxor xmm0, xmm1
movups xmmword [esp + ecx + 0xac], xmm0
movups xmm0, xmmword [esp + ecx + 0x2c]
pxor xmm0, xmm1
movups xmmword [esp + ecx + 0xbc], xmm0
add ecx, 0x20
cmp ecx, 0x80
jl 0x4ffa80
cmp ecx, 0x90
jge 0x4ffad6
nop word [eax + eax]
mov al, byte [esp + ecx + 0x1c]
xor al, 0x36
mov byte [esp + ecx + 0xac], al
inc ecx
cmp ecx, 0x90
jl 0x4ffac0
mov ebp, dword [esp + 0x14]
push ebp
push edi
push dword [ebx + 8]
call fcn.00480210
add esp, 0xc
test eax, eax
je 0x4ffbc8
push edi
call fcn.004645c0
push eax
lea eax, [esp + 0xb4]
push eax
push dword [ebx + 8]
call fcn.00480250
add esp, 0x10
test eax, eax
je 0x4ffbc8
movaps xmm1, xmmword [0x5bd610]
xor ecx, ecx
nop word [eax + eax]
movups xmm0, xmmword [esp + ecx + 0x1c]
pxor xmm0, xmm1
movups xmmword [esp + ecx + 0xac], xmm0
movups xmm0, xmmword [esp + ecx + 0x2c]
pxor xmm0, xmm1
movups xmmword [esp + ecx + 0xbc], xmm0
add ecx, 0x20
cmp ecx, 0x80
jl 0x4ffb20
cmp ecx, 0x90
jge 0x4ffb76
nop word [eax + eax]
mov al, byte [esp + ecx + 0x1c]
xor al, 0x5c
mov byte [esp + ecx + 0xac], al
inc ecx
cmp ecx, 0x90
jl 0x4ffb60
push ebp
push edi
push dword [ebx + 0xc]
call fcn.00480210
add esp, 0xc
test eax, eax
je 0x4ffbc8
push edi
call fcn.004645c0
push eax
lea eax, [esp + 0xb4]
push eax
push dword [ebx + 0xc]
call fcn.00480250
add esp, 0x10
test eax, eax
je 0x4ffbc8
push dword [ebx + 8]
push dword [ebx + 4]
call fcn.00480390
xor ebx, ebx
add esp, 8
test eax, eax
mov ecx, 1
cmovne ebx, ecx
cmp dword [esp + 0x18], 0
je 0x4ffbee
jmp 0x4ffbca
xor ebx, ebx
lea eax, [esp + 0x1c]
push 0x90
push eax
call fcn.00401320
lea eax, [esp + 0xb4]
push 0x90
push eax
call fcn.00401320
add esp, 0x10
mov eax, ebx
jmp 0x4ffbf4
xor eax, eax
mov ecx, dword [esp + 0x13c]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.00579e58
add esp, 0x130
ret