| 摘要 |
A method of determining reliability of information received at a destination (16) in a communication network sent from a source with which the destination does not have a security association comprises generating first and second data (12, 13) representative of the information at the source. The first data is sent down a first route (14) from the source to the destination and the second data is sent down a second route (15) from the source to the destination. At the destination, received data that has been sent via the first and second routes (14, 15) is compared. Information is regenerated from the received data and the reliability of the information is determined from the result of the comparison of the received data.
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