Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2006-03-07
2006-03-07
Morse, Gregory (Department: 2134)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S160000
Reexamination Certificate
active
07010689
ABSTRACT:
Methods, systems and computer program products are provided for controlling access to digital data in a file by obtaining a passphrase from a user and generating a personal key based on the obtained passphrase. A file encryption key is generated and the digital data in the file encrypted with the file encryption key to provide an encrypted file. The file encryption key is encrypted with the personal key to provide an encrypted file encryption key. A file header containing the encrypted file encryption key and associated with the encrypted file. The encrypted file and the file header associated with the encrypted file may be stored at a file server.
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Matyas, Jr. Stephen Michael
Peyravian Mohammad
Roginsky Allen Leonid
Zunic Nevenko
Brown Christopher J
Herndon Jerry W.
International Business Machines - Corporation
Morse Gregory
Myers Bigel & Sibley & Sajovec
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