public override void SetHashAlgorithm(string strName)
{
if (strName == null)
{
throw new ArgumentNullException("strName");
}
var instance = PKCS1.CreateFromName(strName) as SHA1;
if (instance == null)
{
throw new CryptographicUnexpectedOperationException(Locale.GetText("DSA requires SHA1"));
}
}
