Electronic seal, memory medium, advanced authentication system, mobile device, and vehicle start control apparatus

摘要

An electronic seal includes an input/output section for receiving a random number encrypted based on a prescribed key; and an advance authentication processing section for decrypting the encrypted and received random number based on a secret key related to the prescribed key and then encrypting the decrypted random number based on the secret key. The input/output section outputs the encrypted random number encrypted based on the secret key.