Roger G Butler

US Patent:

7178025, Feb 13, 2007

Filed:

Jan 30, 2003

Appl. No.:

10/502478

Inventors:

Edward M. Scheidt - McLean VA, US
Ersin Domanque - Woodbine MD, US
Roger Butler - Centreville VA, US
Wai Tsang - Falls Church VA, US

Assignee:

Tec Sec, Inc. - Vienna VA

International Classification:

G06F 17/60
H04L 9/00

US Classification:

713168, 713166, 713176, 713182, 713183, 713184, 713185, 713186, 705 67, 726 2, 726 5, 726 8, 726 9, 726 10

Abstract:

A method of authenticating a user to use a system includes using a provider token to generate a random value. The token generates a derived key based at least in part on a token-provided salt value and a user-provided password. The provider generates a token unlock key based at least in part on the derived key and sends it to the token. First and second challenge data instances are generated by the provider and the token, respectively, and the process is terminated if the challenge data instances are determined not to match. If the challenge data instances are determined to match, then an encrypted data transfer system is established between the token and the provider, and the token unlocks locked private data stored on the token. The user is authenticated for secured use of the system based at least in part on the unlocked private data.

US Patent:

20060282681, Dec 14, 2006

Filed:

May 26, 2006

Appl. No.:

11/441793

Inventors:

Edward Scheidt - McLean VA, US
C. Jay Wack - Clarksburg MD, US
Wai Tsang - Falls Church VA, US
Roger Butler - Centreville VA, US

International Classification:

H04K 1/00

US Classification:

713186000

Abstract:

A method of providing object security includes selecting an object to secure, selecting at least one criterion for authorization to access the object, generating an authorization profile based on the at least one criterion, generating an encryption key, binding the authorization profile to at least one of the object and the key, and encrypting the object with the encryption key.

US Patent:

20110178930, Jul 21, 2011

Filed:

Oct 6, 2008

Appl. No.:

12/246398

Inventors:

Edward M. Scheidt - Vienna VA, US
C. JAY Wack - Vienna VA, US
Wai Tsang - Falls Church VA, US
Roger Butler - Centreville VA, US
Ron Parsons - Ijamsville MD, US

International Classification:

H04L 9/28
G06Q 30/00

US Classification:

705 50

Abstract:

A silo system process includes providing a partner with a digitally-signed CKM authorization key by an issuer, thereby allowing the partner to create a silo of an agreed size on a storage medium. The owner of the storage medium provides a personal card for provisioning. The partner creates a silo on the personal card. The partner instantiates a silo and provisions the silo with partner-specific CKM keys. The partner notifies the issuer by that the silo has been created, thereby allowing the issuer to track creation of silos on each card for card management and billing purposes. The partner manages the silo by using the partner-specific keys.