METHOD AND SYSTEM FOR SECURING A PAYMENT TRANSACTION

摘要

A mobile payment device 130 obtains a password from a customer for processing a payment transaction. The mobile payment device 130 encrypts the password using a public key. The mobile payment device 130 transmits the public key encrypted password via a network 140 to a cryptographic conversion host 150 which decrypts it using a private key corresponding to the public key. The cryptographic conversion host 150 re-encrypts the decrypted password with a secret key and provides the secret key encrypted password to a transaction host 160. The transaction host 160 decrypts the secret key encrypted password using an identical secret key and applies the decrypted password to process the payment transaction.