/// <summary>
/// Returns <c>true</c> if the key string passed is a valid XML key
/// and is NOT a key container name.
/// </summary>
/// <param name="algorithm">The asymmetric algorithm.</param>
/// <param name="key">The key string to be tested.</param>
/// <returns><c>true</c> if the key is a valid XML key.</returns>
/// <remarks>
/// The current implementation supports only the "RSA" provider.
/// </remarks>
public static bool IsXmlKey(string algorithm, string key)
{
AsymmetricAlgorithm asymmetric = null;
try
{
if (ParseKeyContainer(key) != null)
{
return(false);
}
asymmetric = EncryptionConfig.CreateAsymmetric(algorithm, 0);
asymmetric.FromXmlString(key);
return(true);
}
catch
{
return(false);
}
finally
{
if (asymmetric != null)
{
asymmetric.Clear();
}
}
}
/// <summary>
/// Generates an asymmetric private key and returns the result as XML.
/// </summary>
/// <param name="algorithm">The asymmetric algorithm name.</param>
/// <param name="keySize">The key size in bits.</param>
/// <returns>The private key encoded as XML.</returns>
/// <remarks>
/// The current implementation supports only the "RSA" provider.
/// </remarks>
public static string CreatePrivateKey(string algorithm, int keySize)
{
var asymmetric = EncryptionConfig.CreateAsymmetric(algorithm, keySize);
try
{
return(asymmetric.ToXmlString(true));
}
finally
{
asymmetric.Clear();
}
}
/// <summary>
/// Returns the public key for a private key.
/// </summary>
/// <param name="algorithm">The asymmetric algorithm.</param>
/// <param name="privateKeyXml">The private key encoded as XML.</param>
/// <returns>The public key encoded as XML.</returns>
/// <remarks>
/// The current implementation supports only the "RSA" provider.
/// </remarks>
public static string GetPublicKey(string algorithm, string privateKeyXml)
{
var asymmetric = EncryptionConfig.CreateAsymmetric(algorithm, 0);
try
{
asymmetric.FromXmlString(privateKeyXml);
return(asymmetric.ToXmlString(false));
}
finally
{
asymmetric.Clear();
}
}