if luhn_mod_n(raw, BASE32_ALPHABET) != checksum: return False, "Checksum error"
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
if len(raw) != 12 or len(checksum) != 4: return False, "Length mismatch"
# Edition mapping editions = ["LE", "SE", "Pro", "Lab"] edition = editions[edition_val]
def decode_number(s): num = 0 for ch in s: num = num * 32 + BASE32_ALPHABET.index(ch) return num
checksum = luhn_mod_n(raw, BASE32_ALPHABET)
# Optional: check date expiration (e.g., 1 year from release) # Optional: verify feature bits match purchased edition
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]
| Segment | Length | Purpose | |---------|--------|---------| | Prefix | 4 | Product ID | | Date | 3 | Days since 2025-01-01 (mod 32⁴) | | Edition | 2 | 00=LE, 01=SE, 10=Pro, 11=Lab | | Features| 5 | Bitmask of 25 features | | Checksum| 4 | Luhn-mod-N over previous 14 chars | | Bit | Feature | |-----|---------| | 0 | Schematic capture | | 1 | SPICE simulation | | 2 | PCB layout (2-layer) | | 3 | PCB layout (4-layer) | | 4 | Auto-router | | 5 | 3D viewer | | 6 | Thermal analysis | | 7 | MCU co-simulation | | 8 | Arduino library | | 9 | FPGA synthesis | | 10 | Scripting (Python) | | 11 | API access | | 12 | Team sharing | | 13 | Version control | | 14 | BOM export | | 15 | Gerber generation | | 16 | Drill files | | 17 | Pick & place | | 18 | Signal integrity | | 19 | Power integrity | | 20 | RF/microwave | | 21 | Antenna designer | | 22 | Cloud backup | | 23 | Educational mode | | 24 | Premium components | 4. Release Code Generation (pseudocode) BASE32_ALPHABET = "ABCDEFGHJKLMNPQRSTUVWXYZ23456789" def encode_number(num, length): # Convert to base-32, pad to length digits = [] for _ in range(length): num, rem = divmod(num, 32) digits.append(BASE32_ALPHABET[rem]) return ''.join(reversed(digits))
# Pack into 14 chars before checksum raw = encode_number(date_part, 3) + \ encode_number(edition_part, 2) + \ encode_number(features_part, 5)
