Dynamic primary account number (PAN) and unique key per card
First Claim
1. A method of processing a financial transaction by a user and related to a financial account having a real Primary Account Number (PAN), the method comprising:
- detecting, with a processor, initiation of the transaction with a device used as a presentation instrument in the transaction;
generating, with the processor, a Dynamic Transaction Cryptogram (DTC) at the device that is valid for a single transaction, the DTC encrypted at the device using a card key and based on personal information that is known to the user and that identifies the user;
generating, with the processor, a dynamic PAN at the device, the dynamic PAN comprising an encrypted form of the real PAN that is valid for the single transaction; and
providing both the DTC and the dynamic PAN from the device to a Point-of-Sale (POS) device for use in the transaction, wherein the provided dynamic PAN is decrypted in order to determine the real PAN for processing of the transaction, wherein the real PAN that is determined from the provided dynamic PAN is then used to retrieve a key corresponding to the card key, and wherein the DTC is provided in order to authenticate the transaction, using the retrieved key.
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Accused Products
Abstract
Methods, systems, and machine-readable media are disclosed for handling information related to a financial transaction including utilizing dynamic cryptograms. According to one embodiment, a method of processing a financial transaction related to a financial account can comprise detecting initiation of the transaction with a device used as a presentation instrument in the transaction. A Dynamic Transaction Cryptogram (DTC) and a dynamic PAN can be generated at the device. The DTC can be used to authenticate the transaction and the dynamic PAN can comprise an encrypted form of a real PAN of the financial account that is valid for a single transaction. The DTC and the dynamic PAN can be provided by the device for use in the transaction.
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Citations
16 Claims
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1. A method of processing a financial transaction by a user and related to a financial account having a real Primary Account Number (PAN), the method comprising:
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detecting, with a processor, initiation of the transaction with a device used as a presentation instrument in the transaction; generating, with the processor, a Dynamic Transaction Cryptogram (DTC) at the device that is valid for a single transaction, the DTC encrypted at the device using a card key and based on personal information that is known to the user and that identifies the user; generating, with the processor, a dynamic PAN at the device, the dynamic PAN comprising an encrypted form of the real PAN that is valid for the single transaction; and providing both the DTC and the dynamic PAN from the device to a Point-of-Sale (POS) device for use in the transaction, wherein the provided dynamic PAN is decrypted in order to determine the real PAN for processing of the transaction, wherein the real PAN that is determined from the provided dynamic PAN is then used to retrieve a key corresponding to the card key, and wherein the DTC is provided in order to authenticate the transaction, using the retrieved key. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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Specification