return f"CWIZ-raw[:4]-raw[4:8]-raw[8:12]-checksum" def verify_release_code(code): parts = code.split('-') if parts[0] != "CWIZ" or len(parts) != 5: return False, "Invalid format" raw = parts[1] + parts[2] + parts[3] # 12 chars checksum = parts[4]
# Pack into 14 chars before checksum raw = encode_number(date_part, 3) + \ encode_number(edition_part, 2) + \ encode_number(features_part, 5) circuit wizard release code
checksum = luhn_mod_n(raw, BASE32_ALPHABET) 3) + \ encode_number(edition_part
def generate_release_code(edition, feature_bits, release_date): # release_date = days since 2025-01-01 date_part = release_date % (32**3) # 3 chars edition_part = edition # 0..3 features_part = feature_bits # 25 bits max 2) + \ encode_number(features_part
def decode_number(s): num = 0 for ch in s: num = num * 32 + BASE32_ALPHABET.index(ch) return num
if luhn_mod_n(raw, BASE32_ALPHABET) != checksum: return False, "Checksum error"
# Optional: check date expiration (e.g., 1 year from release) # Optional: verify feature bits match purchased edition