US Patent 11018876 Signature verification system, signature verification method, and storage medium

Provided is a signature verification system comprising: a signature terminal including a biometric information acquisition unit for acquiring biometric information of a user, a public template certificate generation unit for generating a public template certificate by subjecting the biometric information to predetermined processing, a key pair generation unit for generating a pair of a secret key and a public key, and a public key certificate generation unit for generating a public key certificate by providing a biometric signature to the public key with the biometric information used as a key; and a verification terminal including a public key certificate verification unit for receiving a transaction including the public template certificate, the public key certificate, and a signature to verify the validity of the public key certificate using the public template certificate, and a signature verification unit for verifying the signature using the public key certificate.