Function aes256ccm_seal 

pub fn aes256ccm_seal(
    key: &[u8; 32],
    nonce: &[u8; 11],
    aad: &[u8],
    plaintext: &[u8],
) -> Vec<u8> 

AES-256-CCM seal with an 11-byte nonce ([MS-SMB2] CCM variant).