| 摘要 |
The invention relates to a method for transmitting synchronization messages, for example PTP messages (PTP-M) of the IEEE 1588 standard, the PTP message (PTP-M) being inserted into a data packet in line with the Internet Protocol, the data packet having an IP header (IP-H), and the data packet having a UDP header (UDP-H). In this case, for the encrypted transmission of the PTP message (PTP-M), the data packet is addressed to a UDP port that is reserved for encrypted PTP messages (PTP-M), the data packet is provided with an additional S-PTP header (S-PTP-H) that is provided for encryption, the PTP message (PTP-M) is extended with a pseudo random number (RN), and the PTP message (PTP-M) is encrypted together with the pseudo random number (RN). |
