pub fn reveal_layered(
input: &[u8],
key: &SecretVec<u8>,
layers: EncryptionLayers,
) -> Result<Zeroizing<Vec<u8>>, RustcryptError>pub fn reveal_layered(
input: &[u8],
key: &SecretVec<u8>,
layers: EncryptionLayers,
) -> Result<Zeroizing<Vec<u8>>, RustcryptError>