Function at 0x18001a8f0
Capabilities:
Encode data using xor
Hash data using fnv

Disassembly:
push rbx
push r15
sub rsp, 0x58
movabs rax, 0xfffffffffffffff
mov qword [rsp + 0x28], rcx
mov r15, rcx
mov ebx, 1
bsr rcx, rax
mov eax, ebx
shl rax, cl
cmp rdx, rax
ja 0x18001ab59
lea rax, [rdx - 1]
mov qword [rsp + 0x50], rsi
or rax, rbx
mov qword [rsp + 0x48], rdi
mov rdi, qword [r15 + 8]
bsr rcx, rax
mov qword [rsp + 0x40], r12
mov r8, rdi
inc ecx
mov qword [rsp + 0x20], rdi
shl rbx, cl
lea r12, [r15 + 0x18]
mov rcx, r12
lea rdx, [rbx + rbx]
call fcn.18000e1e0
mov qword [r15 + 0x38], rbx
lea rax, [rbx - 1]
mov qword [r15 + 0x30], rax
mov rsi, qword [r15 + 8]
mov rsi, qword [rsi]
cmp rsi, rdi
je 0x18001ab1c
mov qword [rsp + 0x80], rbp
mov rdi, rsi
mov qword [rsp + 0x38], r13
movabs rax, 0xcbf29ce484222325
mov qword [rsp + 0x30], r14
movabs r9, 0x100000001b3
mov r13, qword [rdi + 0x28]
lea r8, [rdi + 0x10]
mov rsi, qword [rsi]
mov rbp, qword [rdi + 0x20]
cmp r13, 0x10
jb 0x18001a9ba
mov r8, qword [rdi + 0x10]
xor ecx, ecx
mov rdx, rax
test rbp, rbp
je 0x18001a9e4
nop dword [rax]
nop dword [rax + rax]
movzx eax, byte [rcx + r8]
inc rcx
xor rdx, rax
imul rdx, r9
cmp rcx, rbp
jb 0x18001a9d0
mov rcx, qword [r15 + 0x30]
mov r12, qword [r12]
and rcx, rdx
shl rcx, 4
add r12, rcx
mov r15, qword [r12]
cmp r15, qword [rsp + 0x20]
jne 0x18001aa0f
mov qword [r12], rdi
mov qword [r12 + 8], rdi
jmp 0x18001aae9
mov rbx, qword [r12 + 8]
cmp qword [rbx + 0x28], 0x10
lea rdx, [rbx + 0x10]
mov rax, qword [rdx + 0x10]
jb 0x18001aa26
mov rdx, qword [rdx]
lea rcx, [rdi + 0x10]
cmp r13, 0x10
jb 0x18001aa34
mov rcx, qword [rdi + 0x10]
cmp rbp, rax
jne 0x18001aa75
mov r8, rbp
call sub.VCRUNTIME140.dll_memcmp
test eax, eax
jne 0x18001aa75
mov r8, qword [rbx]
cmp r8, rdi
je 0x18001aa6e
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 qword [r12 + 8], rdi
jmp 0x18001aadf
cmp r15, rbx
je 0x18001aaba
nop word [rax + rax]
mov rbx, qword [rbx + 8]
cmp qword [rbx + 0x28], 0x10
lea rdx, [rbx + 0x10]
mov rax, qword [rdx + 0x10]
jb 0x18001aa96
mov rdx, qword [rdx]
lea rcx, [rdi + 0x10]
cmp r13, 0x10
jb 0x18001aaa4
mov rcx, qword [rdi + 0x10]
cmp rbp, rax
jne 0x18001aab5
mov r8, rbp
call sub.VCRUNTIME140.dll_memcmp
test eax, eax
je 0x18001ab33
cmp r15, rbx
jne 0x18001aa80
mov rdx, qword [rdi + 8]
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 [r12], rdi
movabs r9, 0x100000001b3
mov rdi, rsi
mov r15, qword [rsp + 0x28]
movabs rax, 0xcbf29ce484222325
lea r12, [r15 + 0x18]
cmp rsi, qword [rsp + 0x20]
jne 0x18001a9a1
mov r14, qword [rsp + 0x30]
mov r13, qword [rsp + 0x38]
mov rbp, qword [rsp + 0x80]
mov rdi, qword [rsp + 0x48]
mov rsi, qword [rsp + 0x50]
mov r12, qword [rsp + 0x40]
add rsp, 0x58
pop r15
pop rbx
ret
mov r8, qword [rbx]
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
jmp 0x18001aadf
lea rcx, str.invalid_hash_bucket_count
call sub.MSVCP140.dll_void___cdecl_std::_Xlength_error_char_const____ptr64_
int3