08001054 is referenced by 26 patents and cites 1637 patents.

A random number generating algorithm is seeded with an unpredictable number. The seed value is computed by subjecting variable data to a Secure Hashing Algorithm, and truncating the right most, or left most, 16 bytes from the message digest generated. The algorithm generates the unpredictable number by using the seed value as a counter value in the random number generator, and performing a data encryption standard operation. In one exemplary embodiment, the unpredictable number is modified to a predetermined maximum unpredictable number value as determined by the sender and receiver of the unpredictable number.

Title
System and method for generating an unpredictable number using a seeded algorithm
Application Number
11/306617
Publication Number
8001054 (B1)
Application Date
January 4, 2006
Publication Date
August 16, 2011
Inventor
Peter D Saunders
Salt Lake City
UT, US
Lee J Peart
Sussex
GB
Agent
Snell & Wilmer L
Assignee
American Express Travel Related Services Company
NY, US
IPC
G06Q 99/00
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