/// <summary>
/// Convert a BouncyCastle AsymmetricCipherKeyPair into an AsymmetricAlgorithm.
/// </summary>
/// <remarks>
/// <para>Converts a BouncyCastle AsymmetricCipherKeyPair into an AsymmetricAlgorithm.</para>
/// <note type="note">Currently, only RSA and DSA keys are supported.</note>
/// </remarks>
/// <returns>The AsymmetricAlgorithm.</returns>
/// <param name="key">The AsymmetricCipherKeyPair.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="key"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// <paramref name="key"/> is an unsupported asymmetric algorithm.
/// </exception>
public static AsymmetricAlgorithm AsAsymmetricAlgorithm(this AsymmetricCipherKeyPair key)
{
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
if (key.Private is RsaPrivateCrtKeyParameters rsaPrivateKey)
{
return(GetAsymmetricAlgorithm(rsaPrivateKey));
}
if (key.Private is DsaPrivateKeyParameters dsaPrivateKey)
{
return(GetAsymmetricAlgorithm(dsaPrivateKey, (DsaPublicKeyParameters)key.Public));
}
throw new NotSupportedException(string.Format("{0} is currently not supported.", key.GetType().Name));
}
/// <summary>
/// Convert a BouncyCastle AsymmetricCipherKeyPair into an AsymmetricAlgorithm.
/// </summary>
/// <remarks>
/// <para>Converts a BouncyCastle AsymmetricCipherKeyPair into an AsymmetricAlgorithm.</para>
/// <note type="note">Currently, only RSA and DSA keys are supported.</note>
/// </remarks>
/// <returns>The AsymmetricAlgorithm.</returns>
/// <param name="key">The AsymmetricCipherKeyPair.</param>
/// <exception cref="System.ArgumentNullException">
/// <paramref name="key"/> is <c>null</c>.
/// </exception>
/// <exception cref="System.NotSupportedException">
/// <paramref name="key"/> is an unsupported asymmetric algorithm.
/// </exception>
public static AsymmetricAlgorithm AsAsymmetricAlgorithm(this AsymmetricCipherKeyPair key)
{
// TODO: Drop this API - it's no longer needed. The WindowsSecureMimeContext now exports the certificate & key into a pkcs12 and then loads that into an X509Certificate2.
if (key == null)
{
throw new ArgumentNullException(nameof(key));
}
if (key.Private is RsaPrivateCrtKeyParameters rsaPrivateKey)
{
return(GetAsymmetricAlgorithm(rsaPrivateKey));
}
if (key.Private is DsaPrivateKeyParameters dsaPrivateKey)
{
return(GetAsymmetricAlgorithm(dsaPrivateKey, (DsaPublicKeyParameters)key.Public));
}
throw new NotSupportedException(string.Format("{0} is currently not supported.", key.GetType().Name));
}