doujia2090 2017-11-18 05:22
浏览 260
已采纳

获取连接的根CA证书

I am making a https connection to a url.

client.Get(url)

Can i get the root certificate that was used to verify the server certificate.

I looked at the crypto/tls package

PeerCertificates            []*x509.Certificate   // certificate chain presented by remote peer
VerifiedChains              [][]*x509.Certificate // verified chains built from PeerCertificates

The ConnectionState doesnt seem to have certificate from the trust store.

Thanks

  • 写回答

1条回答 默认 最新

  • douqi1625 2017-11-19 01:47
    关注

    As the comment in the code says PeerCertificates only includes certificates returned by the server. VerifiedChains should contain the chain up to a trusted certificate in your local certificate store (assuming that verification passed ok).

    E.g. here is a simple sample code snippet:

    client := &http.Client{}
    
    resp, err := client.Get("https://www.microsoft.com")
    if err != nil {
        panic(err)
    }
    
    for _, cert := range resp.TLS.PeerCertificates {
        fmt.Printf("Peer certificate \"%v\", ISSUED BY \"%v\"
    ", cert.Subject.CommonName, cert.Issuer.CommonName)
    }
    for i, chain := range resp.TLS.VerifiedChains {
        for _, cert := range chain {
            fmt.Printf("Verified Chain %v Certificate \"%v\", ISSUED BY \"%v\"
    ", i, cert.Subject.CommonName, cert.Issuer.CommonName)
        }
    }
    

    And it prints following output:

    Peer certificate "www.microsoft.com", ISSUED BY "Symantec Class 3 Secure Server CA - G4"
    Peer certificate "Symantec Class 3 Secure Server CA - G4", ISSUED BY "VeriSign Class 3 Public Primary Certification Authority - G5"
    Verified Chain 0 Certificate "www.microsoft.com", ISSUED BY "Symantec Class 3 Secure Server CA - G4"
    Verified Chain 0 Certificate "Symantec Class 3 Secure Server CA - G4", ISSUED BY "VeriSign Class 3 Public Primary Certification Authority - G5"
    Verified Chain 0 Certificate "VeriSign Class 3 Public Primary Certification Authority - G5", ISSUED BY "VeriSign Class 3 Public Primary Certification Authority - G5"
    

    Now, note that microsoft certificate is signed by Symantec and microsoft server returns both certificates - its own and Symantec certificate used to sign it. You can see both certificates listed in both Peer certificates and Verified chain. But Symantec's certificate isn't commonly present in trust store, but it is signed by VeriSign certificate which is a root certificate that was found in my computer's trust store. And Verified Chain includes this trusted certificate.

    本回答被题主选为最佳回答 , 对您是否有帮助呢?
    评论

报告相同问题?

悬赏问题

  • ¥20 请用MATLAB画含有二重积分和累加求和的随时间t变化的函数图像,不知如何把二重积分加到循环里,请解答一下
  • ¥15 kali终端update时出现这样的情况
  • ¥15 matlab调用stl文件时报错说内存不足
  • ¥20 医学图像格式、医学图像后处理
  • ¥15 MATLAB中的矩阵分离问题
  • ¥15 服务端可运行语言,解析unity文件
  • ¥15 英飞凌TC387使用MCAL唤醒TJA1145问题
  • ¥15 android tv图标显示异常
  • ¥20 (标签-AR|关键词-预测分析)
  • ¥15 QT IFW 自定义界面添加lineedit小键盘输入数字无效果