Function at 0x542db0
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x18
call fcn.00452110
cmp dword [esp + 0x20], 0
push esi
mov dword [esp + 8], 0
jl 0x5430c1
mov esi, dword [esp + 0x2c]
test esi, esi
js 0x5430c1
push ebp
mov ebp, dword [esp + 0x34]
cmp esi, ebp
jg 0x54309d
cmp ebp, 0xb
jl 0x54309d
push ebx
push 0xe3
push str..crypto_rsa_rsa_pk1.c
push ebp
call fcn.004e7820
mov ebx, eax
add esp, 0xc
test ebx, ebx
jne 0x542e2c
push 0xe5
push str..crypto_rsa_rsa_pk1.c
push 0x41
push 0x71
push 4
call fcn.004f5780
add esp, 0x14
or eax, 0xffffffff
pop ebx
pop ebp
pop esi
add esp, 0x18
ret
mov edx, dword [esp + 0x30]
add ebx, ebp
add edx, esi
mov dword [esp + 0x14], ebx
push edi
test ebp, ebp
jle 0x542e69
mov edi, ebp
nop
mov eax, esi
lea ecx, [esi - 1]
not eax
shr ecx, 0x1f
shr eax, 0x1f
dec ebx
and ecx, eax
dec ecx
mov eax, ecx
and eax, 1
sub edx, eax
sub esi, eax
mov al, byte [edx]
and al, cl
mov byte [ebx], al
sub edi, 1
jne 0x542e40
mov dword [esp + 0x18], ebx
movzx eax, byte [ebx + 1]
mov esi, 2
xor eax, 2
xor edi, edi
lea edx, [eax - 1]
not eax
shr eax, 0x1f
shr edx, 0x1f
and edx, eax
movzx eax, byte [ebx]
dec eax
neg edx
shr eax, 0x1f
neg eax
and edx, eax
mov dword [esp + 0x10], edx
cmp ebp, esi
jle 0x542edb
nop dword [eax]
movzx edx, byte [esi + ebx]
mov eax, edi
dec edx
not eax
shr edx, 0x1f
neg edx
and eax, edx
or edi, edx
mov dword [esp + 0x1c], eax
not eax
mov dword [esp + 0x20], eax
mov ecx, dword [esp + 0x1c]
mov eax, dword [esp + 0x20]
and ecx, esi
and eax, dword [esp + 0x14]
inc esi
or eax, ecx
mov dword [esp + 0x14], eax
cmp esi, ebp
jl 0x542ea0
mov edx, dword [esp + 0x10]
jmp 0x542edd
xor eax, eax
mov edi, dword [esp + 0x30]
mov esi, ebp
sub esi, eax
mov ecx, edi
dec esi
sub ecx, esi
mov dword [esp + 0x1c], esi
xor ecx, esi
mov eax, esi
mov esi, dword [esp + 0x14]
xor eax, edi
or ecx, eax
xor ecx, edi
shr ecx, 0x1f
lea eax, [esi - 0xa]
dec ecx
or eax, esi
xor eax, esi
mov esi, 1
shr eax, 0x1f
dec eax
and ecx, eax
and edx, ecx
lea ecx, [ebp - 0xb]
mov dword [esp + 0x10], edx
mov eax, ecx
mov edx, ecx
xor eax, edi
sub edx, edi
xor edx, edi
or edx, eax
xor edx, ecx
lea ecx, [ebp - 0xb]
shr edx, 0x1f
neg edx
mov dword [esp + 0x30], edx
not edx
mov dword [esp + 0x20], edx
mov eax, dword [esp + 0x30]
mov edx, dword [esp + 0x20]
and eax, ecx
and edx, edi
or edx, eax
mov dword [esp + 0x30], edx
cmp ecx, esi
jle 0x542fcf
mov eax, ebp
sub eax, dword [esp + 0x1c]
add eax, 0xfffffff5
mov dword [esp + 0x24], eax
nop
and eax, esi
mov edi, ebp
sub edi, esi
lea ecx, [eax - 1]
not eax
shr ecx, 0x1f
shr eax, 0x1f
and ecx, eax
dec ecx
cmp edi, 0xb
jle 0x542fbe
movzx ebp, cl
lea eax, [ebx + 0xb]
mov dword [esp + 0x20], ebp
add edi, 0xfffffff5
mov ebx, dword [esp + 0x20]
not ebp
nop dword [eax]
mov dword [esp + 0x20], ebx
lea eax, [eax + 1]
mov dword [esp + 0x14], ebp
mov ecx, dword [esp + 0x20]
mov dl, byte [eax + esi - 1]
and dl, cl
mov ecx, dword [esp + 0x14]
and cl, byte [eax - 1]
or cl, dl
mov byte [eax - 1], cl
sub edi, 1
jne 0x542f90
mov ebx, dword [esp + 0x18]
mov ebp, dword [esp + 0x3c]
lea eax, [ebp - 0xb]
add esi, esi
cmp esi, eax
mov eax, dword [esp + 0x24]
jl 0x542f60
mov edx, dword [esp + 0x30]
xor esi, esi
test edx, edx
jle 0x543046
mov eax, dword [esp + 0x1c]
lea ecx, [ebx + 0xb]
mov edi, dword [esp + 0x1c]
mov ebp, ecx
mov ebx, dword [esp + 0x10]
shr eax, 0x1f
neg edi
mov dword [esp + 0x14], eax
mov dword [esp + 0x24], ecx
mov edx, edi
mov ecx, esi
shr ecx, 0x1f
inc edi
shr edx, 0x1f
xor dl, al
xor al, cl
or dl, al
movzx eax, bl
xor dl, cl
neg dl
movzx ecx, dl
mov edx, dword [esp + 0x2c]
and ecx, eax
mov dword [esp + 0x24], ecx
not ecx
mov dword [esp + 0x20], ecx
mov eax, dword [esp + 0x24]
mov cl, byte [esi + ebp]
and cl, al
mov eax, dword [esp + 0x20]
and al, byte [esi + edx]
or al, cl
mov byte [esi + edx], al
inc esi
mov eax, dword [esp + 0x14]
cmp esi, dword [esp + 0x30]
jl 0x542ff3
mov ebx, dword [esp + 0x18]
mov ebp, dword [esp + 0x3c]
push ebp
push ebx
call fcn.004fdcf0
push ebx
call fcn.004e7750
push 0x12d
push str..crypto_rsa_rsa_pk1.c
push 0x9f
push 0x71
push 4
call fcn.004f5780
mov ebx, dword [esp + 0x30]
mov eax, ebx
and eax, 1
push eax
call fcn.004f5990
add esp, 0x24
mov dword [esp + 0x30], ebx
not ebx
mov dword [esp + 0x24], ebx
mov ecx, dword [esp + 0x30]
and ecx, dword [esp + 0x1c]
mov eax, dword [esp + 0x24]
pop edi
pop ebx
pop ebp
or eax, ecx
pop esi
add esp, 0x18
ret
push 0xdf
push str..crypto_rsa_rsa_pk1.c
push 0x9f
push 0x71
push 4
call fcn.004f5780
add esp, 0x14
or eax, 0xffffffff
pop ebp
pop esi
add esp, 0x18
ret
or eax, 0xffffffff
pop esi
add esp, 0x18
ret