MAC Address Wii conversion

beta.py

def sh1(z):
  h, l, p = ([0x67452301,0xEFCDAB89,0x98BADCFE,0x10325476,0xC3D2E1F0],lambda n,b:((n<<b)|(n>>(32-b)))&0xFFFFFFFF,lambda m:m+b"\x80"+b"\x00"*((55-len(m))%int(64))+(int(8)*len(m)).to_bytes(8,"big"))
  for g in [p(z)[i:i+64]for i in range(0,len(p(z)),64)]:
    w = [int.from_bytes(g[i:i+4],"big")for i in range(0, 64, 4)]
    [w.append(l(w[i-3].__xor__(w[i-8]).__xor__(w[i-14]).__xor__(w[i-16]), 1))for i in range(16,80)]; a, b, c, d, e = h
    for i in range(80):e,d,c,b,a=d,c,l(b,30),a,l(a,5)+(b&c|~int(b)&(d),b.__xor__(c).__xor__(d),b&c|b&d|c&d,b.__xor__(c).__xor__(d))[i//20]+e+(0x5A827999,0x6ED9EBA1,0x8F1BBCDC,0xCA62C1D6)[i//20]+w[i]&0xFFFFFFFF
    h = [(h[i]+[a, b, c, d, e][i])&0xFFFFFFFF for i in range(5)]
  return int(sum(x<<(32*i)for i, x in enumerate(h[::-1]))).to_bytes(20,"big")

print("".join("LRUD"[int.from_bytes(sh1(bytes.fromhex("012345678999")+b"\x19\xa5\x7f\x15")[:2]+sh1(bytes.fromhex("012345678999")+b"\x03\x8f\xa5g\x00\x00")[:2],"big")>>30-2*i&3]for i in range(16)))  # ULLDRLLUDLRLDDDL