Function at 0x505d40
Capabilities:
Authenticate hmac
Encode data using xor

Disassembly:
mov eax, 0x130
call fcn.00581be0
mov eax, dword [0x635f14]
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 0x505da7
cmp edi, dword [ebx]
je 0x505da3
test ebp, ebp
je 0x506002
test esi, esi
js 0x506002
mov dword [ebx], edi
jmp 0x505db1
mov edi, dword [ebx]
test edi, edi
je 0x506002
push edi
call fcn.00461370
add esp, 4
test al, 2
jne 0x506002
test ebp, ebp
je 0x505fb5
push edi
mov dword [esp + 0x1c], 1
call fcn.0046a8c0
add esp, 4
cmp eax, 0x90
jg 0x506002
test eax, eax
js 0x506002
cmp eax, esi
jge 0x505e42
push dword [esp + 0x14]
push edi
push dword [ebx + 4]
call fcn.004864d0
add esp, 0xc
test eax, eax
je 0x506002
push esi
push ebp
push dword [ebx + 4]
call fcn.00486510
add esp, 0xc
test eax, eax
je 0x506002
lea eax, [esp + 0x10]
push eax
lea eax, [esp + 0x20]
push eax
push dword [ebx + 4]
call fcn.004862e0
add esp, 0xc
test eax, eax
je 0x506002
mov esi, dword [esp + 0x10]
jmp 0x505e61
cmp esi, 0x90
ja 0x506002
push esi
lea eax, [esp + 0x20]
push ebp
push eax
call fcn.00583ec0
add esp, 0xc
mov dword [esp + 0x10], esi
cmp esi, 0x90
je 0x505e82
mov eax, 0x90
sub eax, esi
push eax
lea eax, [esp + 0x20]
add eax, esi
push 0
push eax
call fcn.00584440
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 0x505e90
cmp ecx, 0x90
jge 0x505ee6
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 0x505ed0
mov ebp, dword [esp + 0x14]
push ebp
push edi
push dword [ebx + 8]
call fcn.004864d0
add esp, 0xc
test eax, eax
je 0x505fd8
push edi
call fcn.0046a8c0
push eax
lea eax, [esp + 0xb4]
push eax
push dword [ebx + 8]
call fcn.00486510
add esp, 0x10
test eax, eax
je 0x505fd8
movaps xmm1, xmmword [0x5eb4a0]
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 0x505f30
cmp ecx, 0x90
jge 0x505f86
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 0x505f70
push ebp
push edi
push dword [ebx + 0xc]
call fcn.004864d0
add esp, 0xc
test eax, eax
je 0x505fd8
push edi
call fcn.0046a8c0
push eax
lea eax, [esp + 0xb4]
push eax
push dword [ebx + 0xc]
call fcn.00486510
add esp, 0x10
test eax, eax
je 0x505fd8
push dword [ebx + 8]
push dword [ebx + 4]
call fcn.00486650
xor ebx, ebx
add esp, 8
test eax, eax
mov ecx, 1
cmovne ebx, ecx
cmp dword [esp + 0x18], 0
je 0x505ffe
jmp 0x505fda
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 0x506004
xor eax, eax
mov ecx, dword [esp + 0x13c]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.00581392
add esp, 0x130
ret