CryptoAuthentication™ devices represent the industry’s broadest crypto engine product portfolio and offer the most optimized feature sets. The ATSHA204 features turnkey authorization validation, key derivation, and password checking. It is the lowest cost Microchip Encryption/Authentication device. The ATECC108 features host storage of the public key only, in-field slot locking, programmable random Nonce, 1.75 kbit slot for storage, ECC sign/verify, and it is fully compatible with the ATSHA204A. The ATAES132 features full hardware and software compatibility with serial EEPROMs, 16 counters, anti-clone circuitry, mutual authorization with mutual random Nonce, on-off chipkey transfer, and on-board encryption and decryption of external data. Its I²C mode has an "Auth Out” pin to show valid authentication.