internal static HashAlgorithm ObjToHashAlgorithm(object hashAlg)
{
if (hashAlg == null)
{
throw new ArgumentNullException("hashAlg");
}
HashAlgorithm hashAlgorithm = (HashAlgorithm)null;
if (hashAlg is string)
{
hashAlgorithm = (HashAlgorithm)CryptoConfig.CreateFromName((string)hashAlg);
if (hashAlgorithm == null)
{
string friendlyNameFromOid = X509Utils.GetFriendlyNameFromOid((string)hashAlg, OidGroup.HashAlgorithm);
if (friendlyNameFromOid != null)
{
hashAlgorithm = (HashAlgorithm)CryptoConfig.CreateFromName(friendlyNameFromOid);
}
}
}
else if (hashAlg is HashAlgorithm)
{
hashAlgorithm = (HashAlgorithm)hashAlg;
}
else if (hashAlg is Type)
{
hashAlgorithm = (HashAlgorithm)CryptoConfig.CreateFromName(hashAlg.ToString());
}
if (hashAlgorithm == null)
{
throw new ArgumentException(Environment.GetResourceString("Argument_InvalidValue"));
}
return(hashAlgorithm);
}
