c#如何生成数字证书

发布网友 发布时间：2022-04-24 19:31

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热心网友 时间：2023-10-04 15:34

using System;using System.Collections;using System.IdentityModel.Tokens;using System.Security.Cryptography.X509Certificates;// in BouncyCastle.Crypto.dllusing Org.BouncyCastle.X509;using Org.BouncyCastle.Math;using Org.BouncyCastle.Asn1;using Org.BouncyCastle.Crypto;using Org.BouncyCastle.Security;using Org.BouncyCastle.Asn1.X509;using Org.BouncyCastle.Crypto.Prng;using Org.BouncyCastle.Crypto.Generators;namespace ConsoleApplication1
{ class Program
{ static void Main(string[] args)
{ string password = "V3ry_S3kr37;-)"; string signatureAlgorithm = "SHA1WithRSA"; // Generate RSA key pair
var rsaGenerator = new RsaKeyPairGenerator(); var randomGenerator = new CryptoApiRandomGenerator(); var secureRandom = new SecureRandom(randomGenerator); var keyParameters = new KeyGenerationParameters(secureRandom, 1024);
rsaGenerator.Init(keyParameters); var keyPair = rsaGenerator.GenerateKeyPair(); // Generate certificate
var attributes = new Hashtable();
attributes[X509Name.E] = "yi@company.com";//设置dn信息的邮箱地址
attributes[X509Name.CN] = "www.yi.com";//设置证书的用户，也就是颁发给谁
attributes[X509Name.O] = "Company yi.";//设置证书的办法者
attributes[X509Name.C] = "Zh";//证书的语言
//这里是证书颁发者的信息 var ordering = new ArrayList();
ordering.Add(X509Name.E);
ordering.Add(X509Name.CN);
ordering.Add(X509Name.O);
ordering.Add(X509Name.C); var certificateGenerator = new X509V3CertificateGenerator();
//设置证书序列化号
certificateGenerator.SetSerialNumber(BigInteger.ProbablePrime(120, new Random()));
//设置颁发者dn信息
certificateGenerator.SetIssuerDN(new X509Name(ordering, attributes));
//设置证书生效时间
certificateGenerator.SetNotBefore(DateTime.Today.Subtract(new TimeSpan(1, 0, 0, 0)));
//设置证书失效时间
certificateGenerator.SetNotAfter(DateTime.Today.AddDays(365));
//设置接受者dn信息
certificateGenerator.SetSubjectDN(new X509Name(ordering, attributes));
//设置证书的公钥
certificateGenerator.SetPublicKey(keyPair.Public);
//设置证书的加密算法
certificateGenerator.SetSignatureAlgorithm(signatureAlgorithm);
certificateGenerator.AddExtension(X509Extensions.BasicConstraints, true, new BasicConstraints(false));
certificateGenerator.AddExtension(X509Extensions.AuthorityKeyIdentifier, true, new AuthorityKeyIdentifier(SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(keyPair.Public))); // Key usage: Client authentication
certificateGenerator.AddExtension(X509Extensions.ExtendedKeyUsage.Id, false, new ExtendedKeyUsage(new ArrayList() { new DerObjectIdentifier("1.3.6.1.5.5.7.3.2") }));//创建证书，如果需要cer格式的证书，到这里就可以了。如果是pfx格式的就需要加上访问密码 var x509Certificate = certificateGenerator.Generate(keyPair.Private); byte[] pkcs12Bytes = DotNetUtilities.ToX509Certificate(x509Certificate).Export(X509ContentType.Pkcs12, password); var certificate = new X509Certificate2(pkcs12Bytes, password); // Derive security token and use it
var x509Token = new X509SecurityToken(certificate);
}
}
}