Function at 0x51f880
Capabilities:
Encode data using xor

Disassembly:
mov eax, 0x84
call fcn.0053f090
mov eax, dword [0x5ef2a0]
xor eax, esp
mov dword [esp + 0x80], eax
mov eax, dword [esp + 0x8c]
push ebx
mov ebx, dword [esp + 0x9c]
push ebp
mov ebp, dword [esp + 0x9c]
push esi
mov esi, dword [esp + 0x94]
mov dword [esp + 0x28], eax
lea eax, [esp + 0x34]
push edi
mov edi, dword [esp + 0xa0]
push eax
mov dword [esp + 0x18], esi
mov dword [esp + 0x2c], edi
mov dword [esp + 0x20], ebx
mov dword [esp + 0x24], 0
call fcn.004d04a0
test ebp, ebp
push edi
cmove ebp, edi
mov dword [esp + 0x18], ebp
call fcn.004d9030
mov edi, eax
add esp, 8
test edi, edi
js 0x51fcad
mov ebp, dword [esp + 0xac]
cmp ebp, 0xffffffff
jne 0x51f95f
mov ebp, edi
mov dword [esp + 0xac], ebp
push dword [esi + 0x10]
call fcn.004d5700
push dword [esp + 0x18]
lea esi, [eax - 1]
and esi, 7
mov dword [esp + 0x38], esi
call fcn.004ce920
mov edx, eax
mov ecx, esi
mov eax, 0xff
add esp, 8
shl eax, cl
test byte [ebx], al
je 0x51f988
push 0x76
push str..crypto_rsa_rsa_pss.c
push 0x85
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
jmp 0x51fcad
cmp ebp, 0xfffffffe
jne 0x51f966
jmp 0x51f90b
jge 0x51f912
push 0x6f
push str..crypto_rsa_rsa_pss.c
push 0x88
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
jmp 0x51fcad
test esi, esi
jne 0x51f992
inc ebx
dec edx
mov dword [esp + 0x1c], ebx
lea eax, [edi + 2]
cmp edx, eax
jge 0x51f9b6
push 0x7e
push str..crypto_rsa_rsa_pss.c
push 0x6d
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
jmp 0x51fcad
mov esi, edx
sub esi, edi
lea eax, [esi - 2]
cmp ebp, eax
jle 0x51f9c8
push 0x82
jmp 0x51f99b
cmp byte [ebx + edx - 1], 0xbc
je 0x51f9f2
push 0x86
push str..crypto_rsa_rsa_pss.c
push 0x86
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
jmp 0x51fcad
push 0x8b
dec esi
push str..crypto_rsa_rsa_pss.c
push esi
mov dword [esp + 0x24], esi
add ebx, esi
call fcn.004cd800
mov ebp, eax
add esp, 0xc
test ebp, ebp
jne 0x51fa32
push 0x8d
push str..crypto_rsa_rsa_pss.c
push 0x41
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
jmp 0x51fcad
push dword [esp + 0x10]
push edi
push ebx
push esi
push ebp
call fcn.0051af10
add esp, 0x14
test eax, eax
js 0x51fca4
xor ecx, ecx
mov dword [esp + 0x10], ecx
test esi, esi
jle 0x51fb0c
mov edx, dword [esp + 0x1c]
cmp esi, 0x20
jb 0x51faee
lea eax, [edx - 1]
mov dword [esp + 0x10], ecx
add eax, esi
cmp ebp, eax
ja 0x51fa7b
lea eax, [ebp - 1]
add eax, esi
cmp eax, edx
jae 0x51faee
mov eax, esi
and eax, 0x8000001f
jns 0x51fa89
dec eax
or eax, 0xffffffe0
inc eax
mov dword [esp + 0x14], esi
mov ecx, edx
sub dword [esp + 0x14], eax
sub ecx, ebp
mov dword [esp + 0x24], ecx
mov eax, ebp
lea ecx, [edx + 0x10]
mov edx, dword [esp + 0x24]
mov dword [esp + 0x34], ecx
mov ecx, dword [esp + 0x10]
mov esi, dword [esp + 0x34]
mov edi, edi
movdqu xmm0, xmmword [eax]
lea eax, [eax + 0x20]
movdqu xmm1, xmmword [edx + eax - 0x20]
pxor xmm1, xmm0
movdqu xmmword [eax - 0x20], xmm1
movdqu xmm1, xmmword [esi + ecx]
add ecx, 0x20
movdqu xmm0, xmmword [eax - 0x10]
pxor xmm1, xmm0
movdqu xmmword [eax - 0x10], xmm1
cmp ecx, dword [esp + 0x14]
jl 0x51fab0
mov esi, dword [esp + 0x18]
mov edx, dword [esp + 0x1c]
mov dword [esp + 0x10], ecx
cmp ecx, esi
jge 0x51fb0c
add ecx, ebp
sub edx, ebp
sub esi, dword [esp + 0x10]
lea ebx, [ebx]
mov al, byte [ecx + edx]
lea ecx, [ecx + 1]
xor byte [ecx - 1], al
dec esi
jne 0x51fb00
mov eax, dword [esp + 0x30]
test eax, eax
je 0x51fb25
mov ecx, 8
sub ecx, eax
mov eax, 0xff
sar eax, cl
and byte [ebp], al
mov ecx, dword [esp + 0x18]
xor esi, esi
cmp byte [ebp], 0
jne 0x51fb3f
lea eax, [ecx - 1]
cmp esi, eax
jge 0x51fb3f
inc esi
cmp byte [esi + ebp], 0
je 0x51fb34
mov al, byte [esi + ebp]
inc esi
cmp al, 1
je 0x51fb6a
push 0x98
push str..crypto_rsa_rsa_pss.c
push 0x87
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
jmp 0x51fca4
mov edx, dword [esp + 0xac]
test edx, edx
js 0x51fba0
mov eax, ecx
sub eax, esi
cmp eax, edx
je 0x51fba0
push 0x9c
push str..crypto_rsa_rsa_pss.c
push 0x88
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
jmp 0x51fca4
push 0
push dword [esp + 0x2c]
lea eax, [esp + 0x40]
push eax
call fcn.004d0080
add esp, 0xc
test eax, eax
je 0x51fca4
push 8
lea eax, [esp + 0x3c]
push 0x5c0438
push eax
call fcn.004d0230
add esp, 0xc
test eax, eax
je 0x51fca4
push edi
push dword [esp + 0x30]
lea eax, [esp + 0x40]
push eax
call fcn.004d0230
add esp, 0xc
test eax, eax
je 0x51fca4
mov eax, dword [esp + 0x18]
sub eax, esi
je 0x51fc13
push eax
lea eax, [esi + ebp]
push eax
lea eax, [esp + 0x40]
push eax
call fcn.004d0230
add esp, 0xc
test eax, eax
je 0x51fca4
push 0
lea eax, [esp + 0x54]
push eax
lea eax, [esp + 0x40]
push eax
call fcn.004cffe0
add esp, 0xc
test eax, eax
je 0x51fca4
lea ecx, [esp + 0x50]
sub edi, 4
jb 0x51fc45
mov eax, dword [ecx]
cmp eax, dword [ebx]
jne 0x51fc4a
add ecx, 4
add ebx, 4
sub edi, 4
jae 0x51fc34
cmp edi, 0xfffffffc
je 0x51fc9c
mov al, byte [ecx]
cmp al, byte [ebx]
jne 0x51fc77
cmp edi, 0xfffffffd
je 0x51fc9c
mov al, byte [ecx + 1]
cmp al, byte [ebx + 1]
jne 0x51fc77
cmp edi, 0xfffffffe
je 0x51fc9c
mov al, byte [ecx + 2]
cmp al, byte [ebx + 2]
jne 0x51fc77
cmp edi, 0xffffffff
je 0x51fc9c
mov al, byte [ecx + 3]
cmp al, byte [ebx + 3]
je 0x51fc9c
push 0xaa
push str..crypto_rsa_rsa_pss.c
push 0x68
push 0x95
push 4
call fcn.004c75e0
add esp, 0x14
mov dword [esp + 0x20], 0
jmp 0x51fca4
mov dword [esp + 0x20], 1
push ebp
call fcn.004cd780
add esp, 4
lea eax, [esp + 0x38]
push eax
call fcn.004d0240
mov ecx, dword [esp + 0x94]
add esp, 4
mov eax, dword [esp + 0x20]
pop edi
pop esi
pop ebp
pop ebx
xor ecx, esp
call fcn.0053d5c4
add esp, 0x84
ret