public static SDPSecurityDescription CreateNew(uint tag = 1, CryptoSuites cryptoSuite = CryptoSuites.AES_CM_128_HMAC_SHA1_80)
{
SDPSecurityDescription secdesc = new SDPSecurityDescription(tag, cryptoSuite);
secdesc.KeyParams.Add(KeyParameter.CreateNew(cryptoSuite));
return(secdesc);
}