Type Definition aes_ccm::Aes256Ccm

type Aes256Ccm<TagSize> = AesCcm<Aes256, TagSize>;

This is supported on feature="aes" only.

AES-CCM with a 256-bit key.

In terms of COSE, it implements AES-CCM-16-x-256, with x being the TagSize in bits. That is, Aes256Ccm<U8> implements AES-CCM-16-64-256, and Aes256Ccm<U16> implements AES-CCM-16-128-256.