Electrical computers and digital processing systems: support – Multiple computer communication using cryptography – Particular communication authentication technique
Reexamination Certificate
2011-08-09
2011-08-09
Moazzami, Nasser (Department: 2436)
Electrical computers and digital processing systems: support
Multiple computer communication using cryptography
Particular communication authentication technique
C713S181000
Reexamination Certificate
active
07996679
ABSTRACT:
A data migration system performs a tamper-resistant data migration for regulatory compliance systems. The system generates a secure hash for the data object, adds a timestamp to the hash, produces a signature for the data object using a private key, and includes the signature in a signature summary of data objects. Immediately prior to data migration, the system signs the signature summary of the set of data objects to be migrated. The signature of the data object maintains integrity of the data object by preventing undetectable modification to a data object during migration. The signed signature summary maintains completeness by preventing undetectable removal of a data object from or insertion of a data object into the set of data objects during migration.
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Hsu Windsor Wee Sun
Ma Xiaonan
International Business Machines - Corporation
Kassatly Samuel
Moazzami Nasser
Pogmore Travis
Shimokaji & Assoc. P.C.
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