Function at 0x644540
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x14
call fcn.006df660
mov eax, dword [esp + 0x28]
mov ecx, dword [esp + 0x24]
mov edx, ecx
push ebx
push ebp
push esi
push edi
xor edi, edi
mov dword [esp + 0x18], 0
test eax, eax
mov dword [esp + 0x10], edi
push ecx
cmovne edx, eax
mov dword [esp + 0x20], edx
call fcn.005cd640
mov esi, dword [esp + 0x40]
mov ebp, eax
add esp, 4
mov dword [esp + 0x38], ebp
test ebp, ebp
js 0x644849
cmp esi, 0xffffffff
jne 0x6445fd
mov esi, ebp
mov eax, dword [esp + 0x28]
push dword [eax + 0x14]
call fcn.005ae3e0
push dword [esp + 0x2c]
lea ebx, [eax - 1]
and ebx, 7
mov dword [esp + 0x28], ebx
call fcn.005b9840
add esp, 8
mov ecx, eax
test ebx, ebx
mov dword [esp + 0x14], ecx
mov ebx, dword [esp + 0x2c]
jne 0x6445ca
mov byte [ebx], 0
inc ebx
dec ecx
mov dword [esp + 0x14], ecx
lea eax, [ebp + 2]
cmp ecx, eax
jge 0x64463d
call fcn.005cc9b0
push str.RSA_padding_add_PKCS1_PSS_mgf1
push 0xc1
push str.crypto_rsa_rsa_pss.c
call fcn.005ccab0
push 0
push 0x6e
push 4
call fcn.005ccb60
add esp, 0x18
jmp 0x644849
cmp esi, 0xfffffffe
jne 0x644609
mov esi, 0xfffffffd
jmp 0x644591
cmp esi, 0xfffffffd
jge 0x644591
call fcn.005cc9b0
push str.RSA_padding_add_PKCS1_PSS_mgf1
push 0xb6
push str.crypto_rsa_rsa_pss.c
call fcn.005ccab0
push 0
push 0x88
push 4
call fcn.005ccb60
add esp, 0x18
jmp 0x644849
mov ebp, ecx
sub ebp, dword [esp + 0x38]
lea eax, [ebp - 2]
cmp esi, 0xfffffffd
jne 0x644698
mov esi, eax
test esi, esi
jle 0x6446cb
push 0xcb
push str.crypto_rsa_rsa_pss.c
push esi
call fcn.005a9b70
mov edi, eax
add esp, 0xc
test edi, edi
jne 0x6446b0
call fcn.005cc9b0
push str.RSA_padding_add_PKCS1_PSS_mgf1
push 0xcd
push str.crypto_rsa_rsa_pss.c
call fcn.005ccab0
push edi
push 0xc0100
push 4
call fcn.005ccb60
add esp, 0x18
jmp 0x644849
cmp esi, eax
jle 0x64464d
call fcn.005cc9b0
push str.RSA_padding_add_PKCS1_PSS_mgf1
push 0xc7
jmp 0x6445e0
mov eax, dword [esp + 0x28]
push 0
push esi
push edi
push dword [eax + 4]
call fcn.005bfa50
add esp, 0x10
test eax, eax
jle 0x644849
call fcn.005b3820
mov dword [esp + 0x10], eax
test eax, eax
je 0x644849
push 0
push dword [esp + 0x38]
push eax
call fcn.005b3010
add esp, 0xc
test eax, eax
je 0x644849
push 8
push 0x778c18
push dword [esp + 0x18]
call fcn.005b3050
add esp, 0xc
test eax, eax
je 0x644849
push dword [esp + 0x38]
push dword [esp + 0x34]
push dword [esp + 0x18]
call fcn.005b3050
add esp, 0xc
test eax, eax
je 0x644849
test esi, esi
je 0x644744
push esi
push edi
push dword [esp + 0x18]
call fcn.005b3050
add esp, 0xc
test eax, eax
je 0x644849
lea eax, [ebp - 1]
push 0
add eax, ebx
push eax
push dword [esp + 0x18]
call fcn.005b2ee0
add esp, 0xc
test eax, eax
je 0x644849
push dword [esp + 0x1c]
lea ecx, [ebp - 1]
push dword [esp + 0x3c]
lea eax, [ecx + ebx]
push eax
push ecx
push ebx
call fcn.00645910
add esp, 0x14
test eax, eax
jne 0x644849
sub ebp, esi
xor byte [ebx + ebp - 2], 1
lea ecx, [ebx + ebp]
lea eax, [ecx - 2]
dec ecx
test esi, esi
jle 0x644820
xor edx, edx
cmp esi, 0x40
jb 0x644812
lea ebp, [eax + esi]
lea eax, [esi - 1]
add eax, edi
cmp ecx, eax
ja 0x6447ae
cmp ebp, edi
jae 0x644812
mov eax, esi
and eax, 0x8000003f
jns 0x6447bc
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]
pxor xmm1, xmm0
movups xmmword [ecx], xmm1
movups xmm0, xmmword [ecx + 0x10]
movups xmm1, xmmword [eax - 0x50]
pxor xmm1, xmm0
movups xmm0, xmmword [eax - 0x40]
movups xmmword [ecx + 0x10], xmm1
movups xmm1, xmmword [ecx + 0x20]
pxor xmm1, xmm0
movups xmmword [ecx + 0x20], xmm1
movups xmm0, xmmword [ecx + 0x30]
movups xmm1, xmmword [eax - 0x30]
pxor xmm1, xmm0
movups xmmword [ecx + 0x30], xmm1
add ecx, 0x40
cmp edx, ebp
jl 0x6447c3
cmp edx, esi
jge 0x644820
mov al, byte [edx + edi]
lea ecx, [ecx + 1]
xor byte [ecx - 1], al
inc edx
cmp edx, esi
jl 0x644812
mov eax, dword [esp + 0x20]
test eax, eax
je 0x644838
mov ecx, 8
sub ecx, eax
mov eax, 0xff
sar eax, cl
and byte [ebx], al
mov eax, dword [esp + 0x14]
mov dword [esp + 0x18], 1
mov byte [eax + ebx - 1], 0xbc
push dword [esp + 0x10]
call fcn.005b3790
push 0xfc
push str.crypto_rsa_rsa_pss.c
push esi
push edi
call fcn.005a9c50
mov eax, dword [esp + 0x2c]
add esp, 0x14
pop edi
pop esi
pop ebp
pop ebx
add esp, 0x14
ret