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:
Oct. 28, 2014
Filed:
May. 30, 2012
Robert D. Hamman, Dallas, TX (US);
William Kennedy, Iii, Dallas, TX (US);
Jay B. Ross, Lambertville, NJ (US);
Robert D. Hamman, Dallas, TX (US);
William Kennedy, III, Dallas, TX (US);
Jay B. Ross, Lambertville, NJ (US);
SCA Promotions, Dallas, TX (US);
Abstract
A method and apparatus for encoding and decoding sequential index numbers to pseudo-random Personal Identification Codes (PINs) of varying word size in disclosed. The word size is defined by a word size control variable. The encoding and decoding process utilizes a symmetric, secret key, block encryption/decryption method. The index numbers are encrypted and the output result produces the PIN numbers. The encryption process may be reversed to a decryption process using a mode control input. When reversed to decryption, the PIN numbers are translated back into the original index numbers utilizing the same secret key for encryption. The block size of the encryption/decryption method is matched to the word size control variable. The word size defines the maximum number of index number/PIN code pairs. There is a one-to-one correspondence between a single index number and the resulting PIN number, thus forming a unique ordered pair.