US 9,600,808 B1Granted

Secure payment card, method and system

AssigneeEpic One Texas, LLC

InventorsWilliam Gomez, Sr., William Gomez, Jr., Oscar J. Gomez

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Abstract

A payment card system uses a static payment card identifying number and generates, for each attempted transaction, an authentication cryptogram based at least upon a seed value stored within the payment card and further based upon a temporal signal value that changes for each attempted use of the payment card. The authentication cryptogram may be alpha-numerically encoded, preferably using a radix-32 coding to provide 5-bits of information for each character or symbol, and may be communicated in a 26-character payment card account name field instead of communicating a payment account name in said payment card account name field, to thus convey up to 130-bits of information while maintaining compatibility with existing point-of-sale equipment and payment system infrastructure.

Claims28

Dependent claims

An authentication method for use in a payment card, said method comprising:

verifying, within the payment card, a credential presented to the payment card by a payment card user as being a valid credential for the payment card user;
then
generating, within the payment card, a temporal signal value;
generating, using a processor within the payment card, a message digest based at least in part on a seed value stored within the payment card and the temporal signal value;
encoding, using the processor within the payment card, at least a portion of the message digest using an alpha-numeric code to form an alpha-numeric authentication cryptogram;
communicating, using an interface device within the payment card, a payment card identifying number stored within the payment card to a payment processing system;
and
communicating, using the interface device within the payment card, the alpha-numeric authentication cryptogram in a payment card account name field to the payment processing system instead of communicating a payment account name in said payment card account name field.

5 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/530,620Filed 22 Jun 2012 · us provisional application
Priority: 24 Jun 2011
Granted: 21 Mar 2017
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

G06Q 20/00
Payment architectures, schemes or protocols
G06Q 20/341
Using cards, e.g. integrated circuit [IC] cards or magnetic cards: active cards, i.e. cards including their own processing means, e.g. including…
G06Q 20/382
Payment protocols; Details thereof: insuring higher security of transaction
G06Q 20/3821
Insuring higher security of transaction: electronic credentials