System and computer based method to automatically archive...

Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection

Reexamination Certificate

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Details

C707S793000, C713S183000

Reexamination Certificate

active

07080260

ABSTRACT:
A remote user establishes an interactive session. A pre-determined backup set is encrypted at a remote user site according to a key based upon the user's password. Encrypted backup data is then transmitted to a backup archive server and decrypted utilizing the user's password generated key and re-encrypted according to a user specified backup set key and stored upon an auxiliary storage unit. The present invention further embodies a retrieval process wherein a remote user designates one or more files to be retrieved and the backup set encryption key used during the initial backup operation. Software executing within the backup archive server CPU retrieves and decrypts the specified files according to the originally specified backup set key and re-encrypts the files according to the remote user's password. Retrieved information is then transmitted to the remote user whereupon it is subsequently decrypted at the remote user site.

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patent: 6275855 (2001-08-01), Johnson
On the Security of Multiple Encryption, Ralph C. Merkle; Elxsi, Int.; Martin E. Hellman; Stanford University; Communications of ACM, Jul. 1981, vol. 24, No. 7.

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