public static string GetOidValue(Org.BouncyCastle.X509.X509Certificate certificate, string oidKey)
{
var oidValue = default(string);
if (certificate.GetSubjectAlternativeNames() != null)
{
var alternativeNames = certificate
.GetSubjectAlternativeNames()
.Cast <ArrayList>()
.Where(o => o.Count == 2 && o[0].GetType() == typeof(int));
var oidKeys = alternativeNames
.Where(o => o[1] != null)
.Select(o => o[1].ToString());
var oidValues = oidKeys
.Where(o => o.Contains('['))
.Where(o => o.Substring(1, o.IndexOf(',') - 1) == oidKey);
oidValue = oidValues
.FirstOrDefault();
}
return(FormatOidValue(oidValue));
}
