Which key size does Clefia encryption support?

Clefia encryption is a block cipher that was designed as a lightweight alternative to existing encryption standards. It specifically supports key sizes of 128, 192, and 256 bits. This flexibility allows for varying levels of security and performance based on the specific needs of the application or environment in which it is deployed.

Choosing a key size of 128 bits provides a good security level while maintaining efficiency in performance, whereas 192 bits and 256 bits increase security further, albeit with potentially increased computational overhead. The ability to use multiple key sizes is beneficial in a variety of contexts, whether for consumer electronics, embedded systems, or high-security environments where stronger keys are required.

The other options mention sizes that do not align with Clefia's specifications; hence the acknowledgment of 128, 192, and 256 bits as the supported key sizes demonstrates an accurate understanding of Clefia's capabilities in encryption.