/// <inheritdoc />
public byte[] Export(CryptographicPrivateKeyBlobType blobType)
{
try
{
return(this.key.Export(AsymmetricKeyAlgorithmProvider.GetPlatformKeyBlobType(blobType)).ToArray());
}
catch (NotImplementedException ex)
{
throw new NotSupportedException(ex.Message, ex);
}
catch (ArgumentException ex)
{
// ArgumentException can be thrown when we don't have the private key,
// or when the key can't be serialized using the requested format.
// The first of these deserves an InvalidOperationException while
// the second one deserves a NotSupportedException. But we can't clearly
// discern each case from the exception. So we use internal state to assist.
if (this.canExportPrivateKey)
{
// Exporting should work, so it must be an unsupported format.
throw new NotSupportedException(ex.Message, ex);
}
else
{
// We can't have been expected to export regardless of the setting.
throw new InvalidOperationException(ex.Message, ex);
}
}
}
/// <inheritdoc />
public byte[] ExportPublicKey(CryptographicPublicKeyBlobType blobType)
{
try
{
return(this.key.ExportPublicKey(AsymmetricKeyAlgorithmProvider.GetPlatformKeyBlobType(blobType)).ToArray());
}
catch (NotImplementedException ex)
{
throw new NotSupportedException(ex.Message, ex);
}
}