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AssigneePanasonic Intellectual Property Management Co., Lt D.
InventorMasakatsu MATSUO
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A signature verification device includes a communicator that receives a second server certificate including a second public key and receives signature data which is generated by encrypting a hash value derived from the second server certificate using a secret key forming a key pair with the first public key, a signature processor that decrypts the signature data by using the first public key stored in the storage to acquire a first hash value, a unidirectional function deriver that derives a second hash value from the second server certificate, and a signature verifier that determines a signature generation device generating the signature data to be correct in a case of the first hash value and the second hash value matching. Decrease of accuracy of signature verification is reduced with reduced cost and secured security.
A signature verification device comprising:
A signature generation device comprising:
A signature processing system in which a signature generation device and a signature verification device are connected to each other through a network,
A signature verification method in a signature verification device including a storage that stores a first server certificate including a first public key, the method comprising:
A signature generation method in a signature generation device, the method comprising:
Dependencies are inferred from the claim text.