System and Method for Encryption of Financial Transactions Using One-Time Keys (Transaction Pad Encryption)

摘要

The techniques used for encryption of financial transaction information using a modified One Time Pad encryption are disclosed to enable a system where financial transaction data can no longer be stolen from a merchant's computer system and re-used in a fraudulent manner. In order to ensure that stolen data cannot be reused, the strongest form of encryption is necessary and special considerations need to be made for cases where a thief may know some or all of the contents of the transaction message and seeks to reveal the encryption key and modify the transaction. This encryption technique is referred to as Transaction Pad Encryption, and can be used to replace existing methods of encrypting financial transaction information both in transit and while stored in a merchant data system.