DATA MANAGEMENT APPARATUS AND DATA MANAGEMENT METHOD
First Claim
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1. A data management apparatus adaptable to an encryption system using a common key and a pair of keys comprising a public key and a private key, the encryption system in which:
- an encryption is performed by encrypting plaintext data with the common key to generate encrypted data and generate an encrypted common key by encrypting the common key with the public key; and
decryption is performed by decrypting the encrypted common key with the private key to obtain a decrypted common key and decrypting the encrypted data with the decrypted common key, said data management apparatus comprising;
a common key encryption unit configured to encrypt a first common key with a first public key to generate an encrypted first common key;
a password setting receiving unit configured to receive a setting of a first password; and
a private key encryption unit configured to encrypt a first private key with the first password to generate an encrypted first private key.
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Abstract
A data management apparatus is adaptable to an encryption system using a common key and a pair of keys comprising a public key and a private key. The data management apparatus includes: a common key encryption unit configured to encrypt a first common key with a first public key to generate an encrypted first common key; a password setting receiving unit configured to receive a setting of a first password; and a private key encryption unit configured to encrypt a first private key with the first password to generate an encrypted first private key.
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Citations
15 Claims
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1. A data management apparatus adaptable to an encryption system using a common key and a pair of keys comprising a public key and a private key, the encryption system in which:
- an encryption is performed by encrypting plaintext data with the common key to generate encrypted data and generate an encrypted common key by encrypting the common key with the public key; and
decryption is performed by decrypting the encrypted common key with the private key to obtain a decrypted common key and decrypting the encrypted data with the decrypted common key, said data management apparatus comprising;a common key encryption unit configured to encrypt a first common key with a first public key to generate an encrypted first common key; a password setting receiving unit configured to receive a setting of a first password; and a private key encryption unit configured to encrypt a first private key with the first password to generate an encrypted first private key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
- an encryption is performed by encrypting plaintext data with the common key to generate encrypted data and generate an encrypted common key by encrypting the common key with the public key; and
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14. A data management method adaptable to an encryption system using a common key and a pair of keys comprising a public key and a private key, the encryption system in which:
- an encryption is performed by encrypting plaintext data with the common key to generate encrypted data and generating an encrypted common key by encrypting the common key with the public key; and
decryption is performed by decrypting the encrypted common key with the private key to obtain a decrypted common key and decrypting the encrypted data with the decrypted common key, said data management method comprising;encrypting a first common key with a first public key to generate an encrypted first common key; receiving a setting of a first password; and encrypting a first private key with the first password to generate an encrypted first private key.
- an encryption is performed by encrypting plaintext data with the common key to generate encrypted data and generating an encrypted common key by encrypting the common key with the public key; and
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15. A computer-readable medium having a computer program stored thereon and readable by a computer, said computer program, when executed by the computer, causes the computer to perform operations for a data management apparatus adaptable to an encryption system using a common key and a pair of keys comprising a public key and a private key, the encryption system in which:
- an encryption is performed by encrypting plaintext data with the common key to generate encrypted data and generating an encrypted common key by encrypting the common key with the public key; and
decryption is performed by decrypting the encrypted common key with the private key to obtain a decrypted common key and decrypting the encrypted data with the decrypted common key, said operations comprising;encrypting a first common key with a first public key to generate an encrypted first common key; receiving a setting of a first password; and encrypting a first private key with the first password to generate an encrypted first private key.
- an encryption is performed by encrypting plaintext data with the common key to generate encrypted data and generating an encrypted common key by encrypting the common key with the public key; and
Specification