DTLS

Security Layer

By operating over user datagram protocol, dtls ensures that packets can be sent without establishing a formal connection, which is ideal for delay sensitive streaming and low power devices. It replicates the security guarantees of transport layer security while implementing mechanisms to handle packet loss and reordering. These features are necessary for maintaining data integrity over unreliable networks.

Bandwidth Consumption

The cryptographic handshakes and message authentication codes associated with secure protocols can greatly increase the size of transmitted messages. This growth in packet size requires careful management in resource constrained devices that operate on battery power. For example, a standard security handshake can require several kilobytes of data, which drains the power of a remote sensor.

Minimizing the frequency of handshakes is therefore a priority for software engineers.

Implementation Choice

Selecting this security protocol over a tcp based alternative depends on the communication needs of the application. In scenarios where low latency is required and occasional packet loss is acceptable, dtls is preferred. This protocol secures industrial automation networks without causing transmission delays.