/// <summary>
/// Decrypts the <paramref name="encrypted"/> data with the <paramref name="cipher"/>.
/// </summary>
/// <typeparam name="T"></typeparam>
/// <param name="cipher">The cipher.</param>
/// <param name="encrypted">The encrypted.</param>
/// <returns>T.</returns>
public static Nullable <T> DecryptNullable <T>(
this ICipher cipher,
byte[] encrypted) where T : struct
{
if (cipher == null)
{
throw new ArgumentNullException(nameof(cipher));
}
if (encrypted == null)
{
throw new ArgumentNullException(nameof(encrypted));
}
if (encrypted.Length < 2)
{
throw new ArgumentException(Resources.InvalidArgumentLength, nameof(encrypted));
}
if (!EncryptTypedData.ContainsKey(typeof(T)))
{
throw new ArgumentException("The specified data type cannot be decrypted.");
}
var decrypted = cipher.Decrypt(encrypted);
if (decrypted.Length < 2)
{
throw new ArgumentException("The argument is not a valid encrypted Nullable<T> value.");
}
return(FromByteArray.ToNullable <T>(decrypted));
}
