/// <summary>
/// Initializes a new instance of the <see cref="ASymmetricEncryption"/> class.
/// </summary>
/// <param name="key">
/// The private key that will be used to decrypt the password used to decrypt the password.
/// </param>
/// <param name="password">The password to use during the symmetric part of the encryption.</param>
/// <exception cref="ArgumentNullException">
/// password - A password must be provided! or key - An RSA public key must be provided.
/// </exception>
public ASymmetricEncryption(RsaPublicKey key, EncryptionData password)
{
password = Check.NotNull(password, nameof(password));
if (password.IsEmpty)
{
throw new ArgumentNullException(nameof(password), "A password must be provided!");
}
if (password.Text.Length > 32)
{
throw new ArgumentOutOfRangeException(
nameof(password),
"RSA Encryption limits the password to 32 characters");
}
_publicKey = key ?? throw
new ArgumentNullException(
nameof(key),
"An RSA private key must be provided!");
_password = Equals(password.EncodingToUse, Encoding.UTF8)
? password
: new EncryptionData(password.Text, Encoding.UTF8);
EncryptedPassword = new RsaEncryption().Encrypt(_password, _publicKey);
}
/// <summary>
/// Initializes a new instance of the <see cref="ASymmetricEncryption"/> class.
/// </summary>
/// <param name="key">
/// The private key that will be used to decrypt the password used to decrypt the password.
/// </param>
/// <exception cref="ArgumentNullException">An RSA public key must be provided.</exception>
public ASymmetricEncryption(RsaPublicKey key)
{
_publicKey = key ?? throw
new ArgumentNullException(
nameof(key),
"An RSA public key must be provided!");
var random = CryptoRandomNumber.Next();
var generator = new PasswordGenerator(random)
{
IncludeExtended = false
};
_password = new EncryptionData(generator.Generate(32));
EncryptedPassword = new RsaEncryption().Encrypt(_password, _publicKey);
}