c# - 在 .net Framework 4.7.2 中从 base64 字符串创建 certificateRequest

问题描述

过去我使用我们certTool的 comCERTENROLLLib来创建csr. 从版本4.7.2开始，您可以使用 .net 框架。

可以csr通过在方法中传递所有必要的属性CreateSigningRequest并将其转换为pem base64字符串来创建。

不幸的是，我找不到其他方法，在字段中复制 pem 格式的 csr 并csr从中读取所有属性（cn、san、组织等）

我不想使用 com lib CERTENROLLLib、 openssl 或其他 3rd 方。

这是我所做的（获取 csr pem 字符串）在这里和 MS Framework 类描述中找到了很好的示例，感谢您的帮助

protected void createButton_Click(object sender, EventArgs e)
    {
        string csr_cn = txtb_csr_cn.Text;
        string csr_c = txtb_csr_c.Text;
        string csr_l = txtb_csr_l.Text;
        string csr_o = txtb_csr_o.Text;
        string csr_ou = txtb_csr_ou.Text;
        string csr_s = txtb_csr_s.Text;
        csr_san = sanMemo.Text.Replace(" ", "");
        if (csr_san.IndexOf(csr_cn) == -1)
        {
            if (csr_san == "")
            {
                csr_san = csr_cn;
            }
            else
            {
                csr_san = csr_cn + "," + csr_san;
            }
        }
        csr_key_size = Convert.ToInt32(combobox_csr_key.Text);
        csr_info = "CN=" + csr_cn + "," + "OU=" + csr_ou + "," + "O=" + csr_o + "," + "L=" + csr_l + "," + "S=" + csr_s + "," + "C=" + csr_c;
        notesMemo.Text = CreateCSR(); //CreateRequest();

    }

public static string CreateCSR()
    {
        string[] arrSeperator = new string[] { "," };

        RSA keySize = RSA.Create(csr_key_size);

        CertificateRequest parentReq = new CertificateRequest(csr_info,
            //"CN=Experimental Issuing Authority",
            keySize,
            HashAlgorithmName.SHA256,
            RSASignaturePadding.Pkcs1);

        parentReq.CertificateExtensions.Add(
            new X509BasicConstraintsExtension(true, false, 0, true));

        parentReq.CertificateExtensions.Add(
            new X509SubjectKeyIdentifierExtension(parentReq.PublicKey, false));


        var sanBuilder = new SubjectAlternativeNameBuilder();
        Array arrsan = csr_san.Split(arrSeperator, StringSplitOptions.RemoveEmptyEntries);
        foreach (string sanvalue in arrsan)
        {
            sanBuilder.AddDnsName(sanvalue);
        }

        parentReq.CertificateExtensions.Add(sanBuilder.Build());

        string csrdecrypt = PemEncodeSigningRequest(parentReq);
        return csrdecrypt;

}

public static string PemEncodeSigningRequest(CertificateRequest request)
    {
        byte[] pkcs10 = request.CreateSigningRequest();
        StringBuilder builder = new StringBuilder();

        builder.AppendLine("-----BEGIN CERTIFICATE REQUEST-----");

        string base64 = Convert.ToBase64String(pkcs10);

        int offset = 0;
        const int LineLength = 64;

        while (offset < base64.Length)
        {
            int lineEnd = Math.Min(offset + LineLength, base64.Length);
            builder.AppendLine(base64.Substring(offset, lineEnd - offset));
            offset = lineEnd;
        }

        builder.AppendLine("-----END CERTIFICATE REQUEST-----");
        string tester2 = builder.ToString();
        return builder.ToString();
    }

标签： c#asp.netx509certificate

c# - 在 .net Framework 4.7.2 中从 base64 字符串创建 certificateRequest

问题描述

解决方案

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