/// <summary>
/// Gets an instance of <see cref="IEncryptor"/> for the provided key identifier.
/// </summary>
/// <param name="keyIdentifier">
/// An implementation-specific object used to identify the key for this
/// encryption operation.
/// </param>
/// <returns>An object that can be used for encryption operations.</returns>
public IEncryptor GetEncryptor(object keyIdentifier)
{
ICredential credential;
if (!_credentialRepository.TryGet(keyIdentifier, out credential))
{
throw new KeyNotFoundException($"Unable to locate credential using keyIdentifier: {keyIdentifier}");
}
return(new SymmetricEncryptor(credential, _encoding));
}