Function at 0x1800645a0
Capabilities:
Encode data using xor
Hash data using fnv

Disassembly:
mov qword [rsp + 8], rcx
push rbx
push r13
sub rsp, 0x58
movabs rax, 0xfffffffffffffff
mov r13, rcx
bsr rcx, rax
mov ebx, 1
mov eax, ebx
shl rax, cl
cmp rdx, rax
jbe 0x1800645da
lea rcx, str.invalid_hash_bucket_count
call qword [sym.imp.MSVCP140.dll_void___cdecl_std::_Xlength_error_char_const____ptr64_]
int3
lea rax, [rdx - 1]
mov qword [rsp + 0x48], rsi
or rax, rbx
mov qword [rsp + 0x40], rdi
mov rdi, qword [r13 + 8]
bsr rcx, rax
mov qword [rsp + 0x38], r12
mov r8, rdi
inc ecx
mov qword [rsp + 0x88], rdi
shl rbx, cl
lea r12, [r13 + 0x18]
mov rcx, r12
mov qword [rsp + 0x80], r12
lea rdx, [rbx + rbx]
call fcn.18004e960
mov qword [r13 + 0x38], rbx
lea rax, [rbx - 1]
mov qword [r13 + 0x30], rax
mov rsi, qword [r13 + 8]
mov rsi, qword [rsi]
cmp rsi, rdi
je 0x180064858
mov qword [rsp + 0x50], rbp
mov rdi, rsi
mov qword [rsp + 0x30], r14
movabs rax, 0xcbf29ce484222325
mov qword [rsp + 0x28], r15
movabs r11, 0x100000001b3
nop dword [rax]
nop word [rax + rax]
mov r15, qword [rdi + 0x28]
lea r8, [rdi + 0x10]
mov rsi, qword [rsi]
mov rbp, qword [rdi + 0x20]
cmp r15, 0xf
jbe 0x180064689
mov r8, qword [rdi + 0x10]
xor edx, edx
mov rcx, rax
mov r9, rbp
mov r10, r15
test rbp, rbp
je 0x1800646b4
nop dword [rax]
movzx eax, byte [r8 + rdx]
inc rdx
xor rcx, rax
imul rcx, r11
cmp rdx, rbp
jb 0x1800646a0
and rcx, qword [r13 + 0x30]
mov r11, qword [r12]
mov rax, qword [rsp + 0x88]
shl rcx, 4
add r11, rcx
mov qword [rsp + 0x78], r11
cmp qword [r11], rax
jne 0x1800646dd
mov qword [r11], rdi
jmp 0x180064820
mov rbx, qword [r11 + 8]
cmp qword [rbx + 0x28], 0xf
lea rdx, [rbx + 0x10]
mov rax, qword [rdx + 0x10]
jbe 0x1800646f3
mov rdx, qword [rdx]
lea rcx, [rdi + 0x10]
mov r12, rbp
mov r13, r15
cmp r15, 0xf
jbe 0x18006470d
mov rcx, qword [rdi + 0x10]
mov r12, r9
mov r13, r10
cmp rbp, rax
jne 0x180064736
test rbp, rbp
je 0x1800647ea
mov r8, rbp
call sub.VCRUNTIME140.dll_memcmp
mov r11, qword [rsp + 0x78]
mov r15, r13
mov rbp, r12
test eax, eax
je 0x1800647ea
mov r12, qword [r11]
cmp r12, rbx
je 0x180064784
nop
mov rbx, qword [rbx + 8]
cmp qword [rbx + 0x28], 0xf
lea rdx, [rbx + 0x10]
mov rax, qword [rdx + 0x10]
jbe 0x180064756
mov rdx, qword [rdx]
lea rcx, [rdi + 0x10]
cmp r15, 0xf
jbe 0x180064764
mov rcx, qword [rdi + 0x10]
cmp rbp, rax
jne 0x18006477a
test rbp, rbp
je 0x1800647b7
mov r8, rbp
call sub.VCRUNTIME140.dll_memcmp
test eax, eax
je 0x1800647b7
cmp r12, rbx
jne 0x180064740
mov r11, qword [rsp + 0x78]
mov rdx, qword [rdi + 8]
mov r13, qword [rsp + 0x70]
mov r12, qword [rsp + 0x80]
mov qword [rdx], rsi
mov rcx, qword [rsi + 8]
mov qword [rcx], rbx
mov rax, qword [rbx + 8]
mov qword [rax], rdi
mov qword [rbx + 8], rcx
mov qword [rsi + 8], rdx
mov qword [rdi + 8], rax
mov qword [r11], rdi
jmp 0x180064824
mov r8, qword [rbx]
mov rdx, qword [rdi + 8]
mov r13, qword [rsp + 0x70]
mov r12, qword [rsp + 0x80]
mov qword [rdx], rsi
mov rcx, qword [rsi + 8]
mov qword [rcx], r8
mov rax, qword [r8 + 8]
mov qword [rax], rdi
mov qword [r8 + 8], rcx
mov qword [rsi + 8], rdx
mov qword [rdi + 8], rax
jmp 0x180064824
mov r8, qword [rbx]
cmp r8, rdi
je 0x180064813
mov rdx, qword [rdi + 8]
mov qword [rdx], rsi
mov rcx, qword [rsi + 8]
mov qword [rcx], r8
mov rax, qword [r8 + 8]
mov qword [rax], rdi
mov qword [r8 + 8], rcx
mov qword [rsi + 8], rdx
mov qword [rdi + 8], rax
mov r13, qword [rsp + 0x70]
mov r12, qword [rsp + 0x80]
mov qword [r11 + 8], rdi
mov rdi, rsi
movabs rax, 0xcbf29ce484222325
movabs r11, 0x100000001b3
cmp rsi, qword [rsp + 0x88]
jne 0x180064670
mov r15, qword [rsp + 0x28]
mov r14, qword [rsp + 0x30]
mov rbp, qword [rsp + 0x50]
mov rdi, qword [rsp + 0x40]
mov rsi, qword [rsp + 0x48]
mov r12, qword [rsp + 0x38]
add rsp, 0x58
pop r13
pop rbx
ret