Electrical computers and digital processing systems: support – Data processing protection using cryptography – By stored data protection
Reexamination Certificate
2000-11-13
2009-02-10
Moazzami, Nasser G (Department: 2136)
Electrical computers and digital processing systems: support
Data processing protection using cryptography
By stored data protection
C713S194000, C713S165000, C726S027000, C380S277000, C707S793000
Reexamination Certificate
active
07490248
ABSTRACT:
A method for encryption of the content in a database, the method including the steps of detecting that a predetermined time period has elapsed, generating an unexpired encryption key, associating the unexpired encryption key with expiration information, scanning the database for an encrypted item, the encrypted item corresponding to a plaintext item, the encrypted item having been encrypted using an expired encryption key, and encrypting the plaintext item, using the unexpired encryption key, into a reencrypted item.
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Mattsson Ulf
Valfridsson Thomas
Abedin Shanto M
Daley, Jr. William J.
Edwards Angell Palmer & & Dodge LLP
Moazzami Nasser G
Neuner George W.
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