Function decrypt_detached

pub fn decrypt_detached(
    key: &Key,
    ctxt: impl AsRef<[u8]>,
    iv: Iv,
    aad: impl AsRef<[u8]>,
    tag: &Tag,
) -> Result<Vec<u8>, Error>

AEAD decrypt the ciphertext in ctxt with the key, iv, aad, and tag.

Returns the plaintext in ctxt_msg or an error if the decryption fails.