Function at 0x63a6d0
Capabilities:
Encrypt data using curve25519

Disassembly:
push ebp
mov ebp, esp
mov eax, 0x20
call fcn.004d61c0
mov dword [ebp - 8], 0
cmp dword [ebp + 0x18], 2
je 0x63a812
cmp dword [ebp + 8], 0
je 0x63a7a0
mov eax, dword [ebp + 8]
push eax
push 0
lea ecx, [ebp - 0x10]
push ecx
push 0
call fcn.00599e30
add esp, 0x10
cmp dword [ebp - 0x10], 0xffffffff
je 0x63a743
call fcn.005316f0
push str.ossl_ecx_key_op
push 0xaa
push str.cryptoececx_backend.c
call fcn.00531940
add esp, 0xc
push 0
push 0x66
push 0x10
call fcn.00531a70
add esp, 0xc
xor eax, eax
jmp 0x63aa6b
cmp dword [ebp + 0x14], 0
jne 0x63a75c
mov edx, dword [ebp + 8]
mov eax, dword [edx]
push eax
call fcn.00537930
add esp, 4
mov dword [ebp + 0x14], eax
jmp 0x63a7a0
mov ecx, dword [ebp + 8]
mov edx, dword [ecx]
push edx
call fcn.00537930
add esp, 4
cmp dword [ebp + 0x14], eax
je 0x63a7a0
call fcn.005316f0
push str.ossl_ecx_key_op
push 0xb0
push str.cryptoececx_backend.c
call fcn.00531940
add esp, 0xc
push 0
push 0x66
push 0x10
call fcn.00531a70
add esp, 0xc
xor eax, eax
jmp 0x63aa6b
cmp dword [ebp + 0xc], 0
je 0x63a7e1
cmp dword [ebp + 0x14], 0
je 0x63a7e1
cmp dword [ebp + 0x14], 0x40a
je 0x63a7d2
cmp dword [ebp + 0x14], 0x43f
je 0x63a7d2
xor eax, eax
cmp dword [ebp + 0x14], 0x40b
setne al
add eax, 0x38
mov dword [ebp - 0x14], eax
jmp 0x63a7d9
mov dword [ebp - 0x14], 0x20
mov ecx, dword [ebp + 0x10]
cmp ecx, dword [ebp - 0x14]
je 0x63a812
call fcn.005316f0
push str.ossl_ecx_key_op
push 0xb6
push str.cryptoececx_backend.c
call fcn.00531940
add esp, 0xc
push 0
push 0x66
push 0x10
call fcn.00531a70
add esp, 0xc
xor eax, eax
jmp 0x63aa6b
cmp dword [ebp + 0x14], 0x40a
je 0x63a839
cmp dword [ebp + 0x14], 0x43f
je 0x63a839
xor edx, edx
cmp dword [ebp + 0x14], 0x40b
setne dl
lea edx, [edx + edx + 1]
mov dword [ebp - 0x18], edx
jmp 0x63a84b
mov eax, dword [ebp + 0x14]
sub eax, 0x40a
neg eax
sbb eax, eax
and eax, 2
mov dword [ebp - 0x18], eax
mov ecx, dword [ebp + 0x20]
push ecx
push 1
mov edx, dword [ebp - 0x18]
push edx
mov eax, dword [ebp + 0x1c]
push eax
call fcn.005899b0
add esp, 0x10
mov dword [ebp - 8], eax
cmp dword [ebp - 8], 0
jne 0x63a89e
call fcn.005316f0
push str.ossl_ecx_key_op
push 0xbd
push str.cryptoececx_backend.c
call fcn.00531940
add esp, 0xc
push 0
push 0xc0100
push 0x10
call fcn.00531a70
add esp, 0xc
xor eax, eax
jmp 0x63aa6b
mov ecx, dword [ebp - 8]
add ecx, 0xc
mov dword [ebp - 0xc], ecx
cmp dword [ebp + 0x18], 0
jne 0x63a8c6
mov edx, dword [ebp + 0x10]
push edx
mov eax, dword [ebp + 0xc]
push eax
mov ecx, dword [ebp - 0xc]
push ecx
call fcn.004d3550
add esp, 0xc
jmp 0x63aa58
mov edx, dword [ebp - 8]
push edx
call fcn.00589c10
add esp, 4
mov dword [ebp - 4], eax
cmp dword [ebp - 4], 0
jne 0x63a90d
call fcn.005316f0
push str.ossl_ecx_key_op
push 0xc7
push str.cryptoececx_backend.c
call fcn.00531940
add esp, 0xc
push 0
push 0xc0100
push 0x10
call fcn.00531a70
add esp, 0xc
jmp 0x63aa5d
cmp dword [ebp + 0x18], 2
jne 0x63a9d8
cmp dword [ebp + 0x14], 0
je 0x63a9d6
cmp dword [ebp + 0x14], 0x40a
je 0x63a947
cmp dword [ebp + 0x14], 0x43f
je 0x63a947
xor eax, eax
cmp dword [ebp + 0x14], 0x40b
setne al
add eax, 0x38
mov dword [ebp - 0x1c], eax
jmp 0x63a94e
mov dword [ebp - 0x1c], 0x20
push 0
mov ecx, dword [ebp - 0x1c]
push ecx
mov edx, dword [ebp - 4]
push edx
mov eax, dword [ebp + 0x1c]
push eax
call fcn.00515060
add esp, 0x10
test eax, eax
jg 0x63a96d
jmp 0x63aa5d
cmp dword [ebp + 0x14], 0x40a
jne 0x63a9a9
mov ecx, dword [ebp - 4]
movzx edx, byte [ecx]
and edx, 0xf8
mov eax, dword [ebp - 4]
mov byte [eax], dl
mov ecx, dword [ebp - 4]
movzx edx, byte [ecx + 0x1f]
and edx, 0x7f
mov eax, dword [ebp - 4]
mov byte [eax + 0x1f], dl
mov ecx, dword [ebp - 4]
movzx edx, byte [ecx + 0x1f]
or edx, 0x40
mov eax, dword [ebp - 4]
mov byte [eax + 0x1f], dl
jmp 0x63a9d6
cmp dword [ebp + 0x14], 0x40b
jne 0x63a9d6
mov ecx, dword [ebp - 4]
movzx edx, byte [ecx]
and edx, 0xfc
mov eax, dword [ebp - 4]
mov byte [eax], dl
mov ecx, dword [ebp - 4]
movzx edx, byte [ecx + 0x37]
or edx, 0x80
mov eax, dword [ebp - 4]
mov byte [eax + 0x37], dl
jmp 0x63aa19
cmp dword [ebp + 0x14], 0x40a
je 0x63a9fe
cmp dword [ebp + 0x14], 0x43f
je 0x63a9fe
xor ecx, ecx
cmp dword [ebp + 0x14], 0x40b
setne cl
add ecx, 0x38
mov dword [ebp - 0x20], ecx
jmp 0x63aa05
mov dword [ebp - 0x20], 0x20
mov edx, dword [ebp - 0x20]
push edx
mov eax, dword [ebp + 0xc]
push eax
mov ecx, dword [ebp - 4]
push ecx
call fcn.004d3550
add esp, 0xc
mov edx, dword [ebp - 8]
push edx
call fcn.0063a2a0
add esp, 4
test eax, eax
jne 0x63aa58
call fcn.005316f0
push str.ossl_ecx_key_op
push 0xdb
push str.cryptoececx_backend.c
call fcn.00531940
add esp, 0xc
push 0
push 0xa6
push 0x10
call fcn.00531a70
add esp, 0xc
jmp 0x63aa5d
mov eax, dword [ebp - 8]
jmp 0x63aa6b
mov eax, dword [ebp - 8]
push eax
call fcn.00589af0
add esp, 4
xor eax, eax
mov esp, ebp
pop ebp
ret