Patent ID: 7463738
Filing Date: 2008-12-09
Classification: G06F,G06Q

Abstract:
1. A method comprising: encrypting a first encryption key using a second encryption key, to provide an encrypted first encryption key; storing the encrypted first encryption key on a first integrated circuit card at a first computer; encrypting a data file using the first encryption key, to result in an encrypted data file; distributing the encrypted data file to a distribution terminal; placing the first integrated circuit card into communication with a first mobile terminal; downloading the encrypted data file from the distribution terminal to the first mobile terminal and storing the encrypted data file on the first mobile terminal; directly transferring the encrypted first encryption key from the first integrated circuit card to the first mobile terminal, wherein the encrypted first encryption key and the encrypted data file are transmitted over separate communication channels; decrypting the encrypted first encryption key in the first mobile terminal using an encryption key corresponding to the second encryption key; and decrypting the encrypted data file in the first mobile terminal using the first encryption key.