The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jan. 31, 2012
Filed:
Aug. 20, 2008
Ufuk Celikkan, Austin, TX (US);
William C. Conklin, Georgetown, TX (US);
Shawn P. Mullen, Buda, TX (US);
Ravi A. Shankar, Austin, TX (US);
Ufuk Celikkan, Austin, TX (US);
William C. Conklin, Georgetown, TX (US);
Shawn P. Mullen, Buda, TX (US);
Ravi A. Shankar, Austin, TX (US);
International Business Machines Corporation, Armonk, NY (US);
Abstract
Mechanisms for providing an encrypted file system are provided. The mechanisms use a combination of encryption methodologies so as to reduce the amount of decryption and re-encryption that is necessary to a file in the Encrypted File System in the event that the file needs to be modified. The encryption methodologies are interleaved, or alternated, with regard to each block of plaintext. In one illustrative embodiment, Plaintext Block Chaining (PBC) and Cipher Block Chaining (CBC) encryption methodologies are alternated for encrypting a sequence of blocks of data. The encryption of a block of plaintext is dependent upon the plaintext or a cipher generated for the plaintext of a previous block of data in the sequence of blocks of data so that the encryption is more secure than known Electronic Code Book encryption methodologies.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile