| 摘要 |
<p>The invention concerns a method for rollup certification which comprises the following steps: during data exchange between an electronic purse and a reader, transmitting (22) from the reader to the electronic purse the rollup contained in the reader, a certificate associated with said rollup and a cryptographic public key corresponding to an unknown private key, with which the certificate has been produced from the rollup; decrypting (24) in the smart card the certificate from the public key and verifying (25) that the rollup is consistent; for the next transaction, computing (21) a new rollup then a new certificate (31) from a private key pertaining to the receiver card; then sending (33) to the reader the new rollup, the new certificate and the public key corresponding to the card which has just carried out the operation, thereby eliminating the need to store in the reader a security circuit to carry out certification.</p> |
