Pompiliu Donescu

US Patent:

7054445, May 30, 2006

Filed:

Mar 28, 2001

Appl. No.:

09/818608

Inventors:

Virgil Dorin Gligor - Chevy Chase MD, US
Pompiliu Donescu - Gaithersburg MD, US

Assignee:

VDG, Inc. - Chevy Chase MD

International Classification:

H04L 9/30

US Classification:

380 37, 380 28, 380 44, 713170

Abstract:

An authentication method and schemes using a block cipher to protect data integrity (authenticity) during communication over insecure channels and during data storage on insecure media. The authentication method and schemes of this invention allow, in a further aspect, message and data signing and verification in parallel or pipelined manners, in addition to sequential operation, without requiring twice as many block enciphering operations as the number of input plaintext blocks. The present invention allows, in a yet further aspect, software and hardware implementations used in high-performance systems and networks where multiple processing units are available for block enciphering operations. In a yet further aspect, the authentication method and schemes of this invention allow incremental updates and out-of-order processing of authentication tags. In a yet further aspect, the authentication method and schemes of this invention are suitable for real-time applications where message length remains unknown until the entire message is received, and commencing message authentication cannot be deferred until the end of the message.

US Patent:

20010033656, Oct 25, 2001

Filed:

Jan 18, 2001

Appl. No.:

09/761771

Inventors:

Virgil Gligor - Chevy Chase MD, US
Pompiliu Donescu - Gaithersburg MD, US

Assignee:

VDG, Inc.

International Classification:

H04K001/00

US Classification:

380/028000

Abstract:

A block encryption method and schemes (modes of operation) that provide both data confidentiality and integrity with a single cryptographic primitive and a single processing pass over the input plaintext string by using a non-cryptographic Manipulation Detection Code function for secure data communication over insecure channels and for secure data storage on insecure media. The present invention allows, in a further aspect, software and hardware implementations, and use in high-performance and low-power applications, and low-power, low-cost hardware devices. The block encryption method and schemes of this invention allow, in yet a further aspect, encryption and decryption in parallel or pipelined manners in addition to sequential operation. In a yet further aspect, the block encryption method and schemes of this invention are suitable for real-time applications.

US Patent:

20020048364, Apr 25, 2002

Filed:

Aug 17, 2001

Appl. No.:

09/931151

Inventors:

Virgil Gligor - Chevy Chase MD, US
Pompiliu Donescu - Gaithersburg MD, US

Assignee:

VDG, Inc.

International Classification:

H04K001/04

US Classification:

380/037000, 380/286000

Abstract:

A parallel block encryption method and modes (modes or operation) that provide both data confidentiality and integrity with a single cryptographic primitive and a single processing pass over the input plaintext string by using a non-cryptographic Manipulation Detection Code function for secure data communication over insecure channels and for secure data storage in insecure media. The block encryption method and modes of this invention allow, in yet a further aspect, parallel or pipelined operation of the block enciphering and deciphering functions in and architecture-independent manner. The present invention allows, in a further aspect, error recovery. In a yet further aspect, the present invention allows software and hardware implementations, and use in high-performance and low-power applications, and low-power, low-cost hardware devices. In a yet further aspect, the block encryption method and modes of this invention are suitable for real-time applications.

US Patent:

20060056623, Mar 16, 2006

Filed:

Nov 7, 2005

Appl. No.:

11/267146

Inventors:

Virgil Gligor - Chevy Chase MD, US
Pompiliu Donescu - Gaithersburg MD, US

International Classification:

H04L 9/28
H04L 9/00
H04K 1/00

US Classification:

380028000, 380263000, 380268000

Abstract:

A block encryption method and schemes (modes of operation) that provide both data confidentiality and integrity with a single cryptographic primitive and a single processing pass over the input plaintext string by using a non-cryptographic Manipulation Detection Code function for secure data communication over insecure channels and for secure data storage on insecure media. The present invention allows, in a further aspect, software and hardware implementations, and use in high-performance and low-power applications, and low-power, low-cost hardware devices. The block encryption method and schemes of this invention allow, in yet a further aspect, encryption and decryption in parallel or pipelined manners in addition to sequential operation. In a yet further aspect, the block encryption method and schemes of this invention are suitable for real-time applications.