Method and apparatus for encryption and decryption, and computer product
AssigneeFujitsu Limited
InventorsKatsuya Yagi, Manabu Ozawa, Kyoko Fujisawa
Life of this patent
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Abstract
Each of a client and a server has a pattern table. The client reads a public key from the pattern table to encrypt data. The client adds a pattern number corresponding to the public key used for encryption to the encrypted data, and transmits the encrypted data to the server. The server searches the pattern table based on the pattern number, to specify a combination of the public key and a secret key. The server decrypts the encrypted data based on the secret key to obtain original data.
Claims9
An encryption apparatus that performs encryption on data to be transmitted, comprising:
- a storage unit configured to store at least one encryption scheme;
- an encrypting unit configured to encrypt the data based on the encryption scheme;
- and
- a transmitting unit configured to transmit encrypted data.
An encryption method for encrypting data to be transmitted, comprising:
- storing at least one encryption scheme;
- encrypting the data based on the encryption scheme;
- and
- transmitting encrypted data.
A computer-readable recording medium that stores therein a computer program for encrypting data to be transmitted, the computer program making a computer execute:
- storing at least one encryption scheme;
- encrypting the data based on the encryption scheme;
- and
- transmitting encrypted data.
Dependencies are inferred from the claim text.