Techniques for synchronizing and archive-versioning of...

Details Techniques for synchronizing and archive-versioning of... Techniques for synchronizing and archive-versioning of...

2011-03-15

2011-03-15

Lanier, Benjamin E (Department: 2432)

Electrical computers and digital processing systems: support

Data processing protection using cryptography

By stored data protection

C711S163000, C711S164000, C380S259000

Reexamination Certificate

active

07908490

ABSTRACT:
Techniques are presented for synchronizing and archive-versioning encrypted files. Blocks of encrypted data are managed and metadata is maintained for the blocks. The metadata identifies a maximum number of blocks and an index or parameter string. The string includes transaction identifiers and relative block numbers. The metadata is used as parameter information to a hash algorithm along with a hash key to acquire a unique initialization vector for each block. Each initialization vector when supplied to a cipher service along with a particular block of data produces an encrypted version of the data supplied or supplies a decrypted version of the data supplied. The techniques are also applied to files being archived and versioned from a storage volume.

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