您如何从X509Certificate2解析主题备用名称？

本文介绍了您如何从X509Certificate2解析主题备用名称？的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！

问题描述

是否有一种简单的方法来从X509Certificate2对象获取主题备用名称？

Is there an easy way to get the Subject Alternate Names from an X509Certificate2 object?

        foreach (X509Extension ext in certificate.Extensions)
        {
            if (ext.Oid.Value.Equals(/* SAN OID */"2.5.29.17"))
            {
                byte[] raw = ext.RawData;
                // ?????? parse to get type and name ????????
            }
        }

推荐答案

使用扩展名的

X509Certificate2 cert = /* your code here */;

foreach (X509Extension extension in cert.Extensions)
{
    // Create an AsnEncodedData object using the extensions information.
    AsnEncodedData asndata = new AsnEncodedData(extension.Oid, extension.RawData);
    Console.WriteLine("Extension type: {0}", extension.Oid.FriendlyName);
    Console.WriteLine("Oid value: {0}",asndata.Oid.Value);
    Console.WriteLine("Raw data length: {0} {1}", asndata.RawData.Length, Environment.NewLine);
    Console.WriteLine(asndata.Format(true));
}

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