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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.:

US 7428306 B1

PDFFull Text
Expired
Date of Patent:
Sep. 23, 2008

Filed:

Apr. 18, 2006

Encryption apparatus and method for providing an encrypted file system

Applicants:

Ufuk Celikkan, Austin, TX (US);

William C. Conklin, Georgetown, TX (US);

Shawn P. Mullen, Buda, TX (US);

Ravi A. Shankar, Austin, TX (US);

Inventors:

Ufuk Celikkan, Austin, TX (US);

William C. Conklin, Georgetown, TX (US);

Shawn P. Mullen, Buda, TX (US);

Ravi A. Shankar, Austin, TX (US);

Assignee:

International Business Machines Corporation, Armonk, NY (US);

Attorneys:

Stephen J. Walder, Jr.

Matthew W. Baca

Primary Examiner:

Emmanuel I Moise

Assistant Examiner:

Jeffrey D Popham

Int. Cl.
CPC ...
H04L 9/14 (2006.01);
U.S. Cl.
CPC ...
Abstract

An encryption apparatus and method for providing an encrypted file system are provided. The encryption apparatus and method of the illustrative embodiments uses 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.

Find Patent Forward Citations

Celikkan, Ufuk. (2008). Encryption apparatus and method for providing an encrypted file system (U.S. Patent No. 7428306). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/7428306

Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile

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