//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: private static Policy handleException(NoSuchAlgorithmException nsae) throws NoSuchAlgorithmException
private static Policy HandleException(NoSuchAlgorithmException nsae)
{
Throwable cause = nsae.InnerException;
if (cause is IllegalArgumentException)
{
throw (IllegalArgumentException)cause;
}
throw nsae;
}
/// <summary>
/// Returns a KeyPairGenerator object that generates public/private
/// key pairs for the specified algorithm.
///
/// <para> This method traverses the list of registered security Providers,
/// starting with the most preferred Provider.
/// A new KeyPairGenerator object encapsulating the
/// KeyPairGeneratorSpi implementation from the first
/// Provider that supports the specified algorithm is returned.
///
/// </para>
/// <para> Note that the list of registered providers may be retrieved via
/// the <seealso cref="Security#getProviders() Security.getProviders()"/> method.
///
/// </para>
/// </summary>
/// <param name="algorithm"> the standard string name of the algorithm.
/// See the KeyPairGenerator section in the <a href=
/// "{@docRoot}/../technotes/guides/security/StandardNames.html#KeyPairGenerator">
/// Java Cryptography Architecture Standard Algorithm Name Documentation</a>
/// for information about standard algorithm names.
/// </param>
/// <returns> the new KeyPairGenerator object.
/// </returns>
/// <exception cref="NoSuchAlgorithmException"> if no Provider supports a
/// KeyPairGeneratorSpi implementation for the
/// specified algorithm.
/// </exception>
/// <seealso cref= Provider </seealso>
//JAVA TO C# CONVERTER WARNING: Method 'throws' clauses are not available in .NET:
//ORIGINAL LINE: public static KeyPairGenerator getInstance(String algorithm) throws NoSuchAlgorithmException
public static KeyPairGenerator GetInstance(String algorithm)
{
List <Service> list = GetInstance.getServices("KeyPairGenerator", algorithm);
Iterator <Service> t = list.Iterator();
if (t.HasNext() == false)
{
throw new NoSuchAlgorithmException(algorithm + " KeyPairGenerator not available");
}
// find a working Spi or KeyPairGenerator subclass
NoSuchAlgorithmException failure = null;
do
{
Service s = t.Next();
try
{
Instance instance = GetInstance.getInstance(s, typeof(KeyPairGeneratorSpi));
if (instance.impl is KeyPairGenerator)
{
return(GetInstance(instance, algorithm));
}
else
{
return(new Delegate(instance, t, algorithm));
}
}
catch (NoSuchAlgorithmException e)
{
if (failure == null)
{
failure = e;
}
}
} while (t.HasNext());
throw failure;
}