| 摘要 |
A transaction device configured to, at least: receive an encrypted signing key, wherein the signing key was encrypted (104) using a uniquely derived key, the uniquely derived key derived based at least in part on information uniquely associated with the transaction device such that different transaction devices are associated with different uniquely derived keys; independently form the uniquely derived key, the independently formed uniquely derived key based at least in part on the information uniquely associated with the transaction device; responsive to receiving the encrypted signing key, decrypt the encrypted first key using the independently formed uniquely derived key to obtain the signing key; sign (114) transaction data using the signing key; and provide the signed transaction data for inclusion in a transaction authorization request thereby, at least in part, providing evidence that the transaction device is an authentic initiator of the transaction authorization request. 961964D2/11755073 |
