Function decrypt_aead 

pub fn decrypt_aead(
    t: Cipher,
    key: &[u8],
    iv: Option<&[u8]>,
    aad: &[u8],
    data: &[u8],
    tag: &[u8],
) -> Result<Vec<u8>, ErrorStack>

Available on (crate features rustls or boring or acme) and crate feature boring only.

Like decrypt, but for AEAD ciphers such as AES GCM.

Additional Authenticated Data can be provided in the aad field, and the authentication tag should be provided in the tag field.