Method and apparatus for encrypting/decrypting data using...

Cryptography – Key management

Reexamination Certificate

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C380S035000, C380S044000, C380S218000, C380S277000, C380S279000, C713S153000, C713S175000

Reexamination Certificate

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10379455

ABSTRACT:
A computer system comprises a first computer entity arranged to encrypt data using an encryption key comprising a time value, and a second computer entity arranged to generate, at intervals, a decryption key using a current time value. The encryption and decryption processes are such that the decryption key generated using a current time value corresponding to that used for the encryption key, is apt to decrypt the encrypted s data.

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