Function at 0x4d4420
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x1c
call fcn.005e0210
mov ecx, dword [esp + 0x2c]
or eax, 0xffffffff
push ebx
push ebp
push esi
push edi
mov dword [esp + 0x14], eax
xor edi, edi
mov eax, dword [esp + 0x40]
mov edx, ecx
test eax, eax
mov dword [esp + 0x24], 0
push ecx
cmovne edx, eax
mov dword [esp + 0x14], edi
mov dword [esp + 0x2c], edx
call fcn.00456ad0
mov esi, dword [esp + 0x48]
mov ebp, eax
add esp, 4
test ebp, ebp
js 0x4d4707
cmp esi, 0xffffffff
jne 0x4d4476
mov esi, ebp
jmp 0x4d4489
cmp esi, 0xfffffffe
je 0x4d4484
cmp esi, 0xfffffffc
jne 0x4d44f2
mov dword [esp + 0x14], ebp
mov esi, 0xfffffffd
mov ebx, dword [esp + 0x30]
push dword [ebx + 0x14]
call fcn.004624d0
dec eax
and eax, 7
push ebx
mov dword [esp + 0x24], eax
call fcn.004b0b40
mov ebx, dword [esp + 0x3c]
add esp, 8
mov ecx, eax
mov dword [esp + 0x20], ecx
cmp dword [esp + 0x1c], edi
jne 0x4d44bf
mov byte [ebx], 0
inc ebx
dec ecx
mov dword [esp + 0x20], ecx
lea eax, [ebp + 2]
cmp ecx, eax
jge 0x4d4523
call fcn.00457560
push str.RSA_padding_add_PKCS1_PSS_mgf1
push 0xcf
push str.crypto_rsa_rsa_pss.c
call fcn.00457660
push 0
push 0x6e
push 4
call fcn.00457770
add esp, 0x18
jmp 0x4d4707
jge 0x4d4489
call fcn.00457560
push str.RSA_padding_add_PKCS1_PSS_mgf1
push 0xc4
push str.crypto_rsa_rsa_pss.c
call fcn.00457660
push 0
push 0x88
push 4
call fcn.00457770
add esp, 0x18
jmp 0x4d4707
mov eax, ecx
sub eax, ebp
mov dword [esp + 0x18], eax
lea ecx, [eax - 2]
cmp esi, 0xfffffffd
jne 0x4d4730
mov esi, ecx
mov ecx, dword [esp + 0x14]
test ecx, ecx
js 0x4d4547
cmp esi, ecx
jle 0x4d4547
mov esi, ecx
test esi, esi
jle 0x4d4587
push 0xdb
push str.crypto_rsa_rsa_pss.c
push esi
call fcn.00451c10
mov edi, eax
add esp, 0xc
test edi, edi
je 0x4d4707
mov eax, dword [esp + 0x30]
push 0
push esi
push edi
push dword [eax + 4]
call fcn.00457a60
add esp, 0x10
test eax, eax
jle 0x4d4707
mov eax, dword [esp + 0x18]
dec eax
mov dword [esp + 0x40], eax
call fcn.0046b990
mov dword [esp + 0x10], eax
test eax, eax
je 0x4d4707
push 0
push dword [esp + 0x40]
push eax
call fcn.0046b330
add esp, 0xc
test eax, eax
je 0x4d4707
push 8
push 0x649014
push dword [esp + 0x18]
call fcn.0046b370
add esp, 0xc
test eax, eax
je 0x4d4707
push ebp
push dword [esp + 0x3c]
push dword [esp + 0x18]
call fcn.0046b370
add esp, 0xc
test eax, eax
je 0x4d4707
test esi, esi
je 0x4d4602
push esi
push edi
push dword [esp + 0x18]
call fcn.0046b370
add esp, 0xc
test eax, eax
je 0x4d4707
mov eax, dword [esp + 0x40]
push 0
add eax, ebx
push eax
push dword [esp + 0x18]
call fcn.0046b140
add esp, 0xc
test eax, eax
je 0x4d4707
mov ecx, dword [esp + 0x40]
push dword [esp + 0x28]
push ebp
lea eax, [ecx + ebx]
push eax
push ecx
push ebx
call fcn.004d3480
add esp, 0x14
test eax, eax
jne 0x4d4707
mov ecx, dword [esp + 0x18]
sub ecx, esi
add ecx, ebx
xor byte [ecx - 2], 1
lea eax, [ecx - 2]
dec ecx
test esi, esi
jle 0x4d46de
xor edx, edx
cmp esi, 0x40
jb 0x4d46d0
lea ebp, [eax + esi]
lea eax, [esi - 1]
add eax, edi
cmp ecx, eax
ja 0x4d466d
cmp ebp, edi
jae 0x4d46d0
mov eax, esi
and eax, 0x8000003f
jns 0x4d467b
dec eax
or eax, 0xffffffc0
inc eax
mov ebp, esi
sub ebp, eax
lea eax, [edi + 0x20]
movups xmm0, xmmword [ecx]
add edx, 0x40
lea eax, [eax + 0x40]
movups xmm1, xmmword [eax - 0x60]
xorps xmm1, xmm0
movups xmmword [ecx], xmm1
movups xmm0, xmmword [ecx + 0x10]
movups xmm1, xmmword [eax - 0x50]
xorps xmm1, xmm0
movups xmmword [ecx + 0x10], xmm1
movups xmm0, xmmword [ecx + 0x20]
movups xmm1, xmmword [eax - 0x40]
xorps xmm1, xmm0
movups xmmword [ecx + 0x20], xmm1
movups xmm1, xmmword [eax - 0x30]
movups xmm0, xmmword [ecx + 0x30]
xorps xmm1, xmm0
movups xmmword [ecx + 0x30], xmm1
add ecx, 0x40
cmp edx, ebp
jl 0x4d4682
cmp edx, esi
jge 0x4d46de
nop dword [eax]
mov al, byte [edx + edi]
lea ecx, [ecx + 1]
xor byte [ecx - 1], al
inc edx
cmp edx, esi
jl 0x4d46d0
mov eax, dword [esp + 0x1c]
test eax, eax
je 0x4d46f6
mov ecx, 8
sub ecx, eax
mov eax, 0xff
sar eax, cl
and byte [ebx], al
mov eax, dword [esp + 0x20]
mov dword [esp + 0x24], 1
mov byte [eax + ebx - 1], 0xbc
push dword [esp + 0x10]
call fcn.0046b900
push 0x10a
push str.crypto_rsa_rsa_pss.c
push esi
push edi
call fcn.00451d30
mov eax, dword [esp + 0x38]
add esp, 0x14
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x1c
ret
cmp esi, ecx
jle 0x4d4547
call fcn.00457560
push str.RSA_padding_add_PKCS1_PSS_mgf1
push 0xd7
jmp 0x4d44d5