NetCore 生成RSA公私钥对，公钥加密私钥解密，私钥加密公钥解密

傷城~ 2022-05-30 07:08 844阅读 0赞

NetCore 生成RSA公私钥对，公钥加密私钥解密，私钥加密公钥解密

  1. using Newtonsoft.Json;
  2. using Org.BouncyCastle.Crypto;
  3. using Org.BouncyCastle.Crypto.Encodings;
  4. using Org.BouncyCastle.Crypto.Engines;
  5. using Org.BouncyCastle.Crypto.Generators;
  6. using Org.BouncyCastle.OpenSsl;
  7. using Org.BouncyCastle.Pkcs;
  8. using Org.BouncyCastle.Security;
  9. using Org.BouncyCastle.X509;
  10. using System;
  11. using System.IO;
  12. using System.Text;
  14. namespace ConsoleAppTest
  15. {
  16.     class Program
  17.     {
  18.         //自己生成
  19.         static string _publicKeyString = @"-----BEGIN PUBLIC KEY-----
  20.                                             MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAmu5B+WIU9ZK+uy11qmdj
  21.                                             KygwcH6r8YOui2jc87pWShKAEnEE2Q81twgQ4KGFylodpNsXs+EGeQA8HUiDKK11
  22.                                             Pm6AMzrqHQ8rtNNWbQA6Ca+BJJHEoyrizaHTGLWU7oHe9TcRQ8Iq5vihF74x1jD2
  23.                                             BHXpgR6KUhx9DUMFgdwpLXhZ2EgG85eOuajcHl+tLN52bEpGwSHyL5iWuX2U5qfN
  24.                                             Ln3h/lCmdktPwCjVVyaoLALxP0oDtalRwLKRJuD91p6YxrAeN3eRkGWoYXH5bSrS
  25.                                             BR+5id5yBplxayVrozJXFpOFySTrCHD2snnfjmn39dKsRjwRjKG/zKUPO54GPovv
  26.                                             rODK32c1xiKpQQ7XAzyXPNij3MWPJFu6z24eNdILm4wF1jFWQlrsca0znpjoAVFY
  27.                                             e1yp1lXAtYlxgNURMQ2RwvBtnT3BUhUP382GYd0XPdV1xodOaJVf8ce3YImrGaAY
  28.                                             jPjbTPTbTyzwcHyc1LHwYw4W7aYiTyX8p5+7PkdkRr8uiKA9iFhH6iq+7MPv5O0F
  29.                                             NGSktGZkyFSKg9vazQmESlUC+blC2yQRBJsqV84weMKGCURg3jxetTfENHJ8N+H9
  30.                                             pnacvRjl5O5cZjECOi4XrGAUd4bvqKBfZ1OnB1htWGEjPyGhKzmAG8vzf0GVtAK8
  31.                                             8qhuYM7FceTYJsqUnzFnEHUCAwEAAQ==
  32.                                             -----END PUBLIC KEY-----";
  33.         static string _privateKeyString = @"-----BEGIN RSA PRIVATE KEY-----
  34.                                             MIIJKAIBAAKCAgEAmu5B+WIU9ZK+uy11qmdjKygwcH6r8YOui2jc87pWShKAEnEE
  35.                                             2Q81twgQ4KGFylodpNsXs+EGeQA8HUiDKK11Pm6AMzrqHQ8rtNNWbQA6Ca+BJJHE
  36.                                             oyrizaHTGLWU7oHe9TcRQ8Iq5vihF74x1jD2BHXpgR6KUhx9DUMFgdwpLXhZ2EgG
  37.                                             85eOuajcHl+tLN52bEpGwSHyL5iWuX2U5qfNLn3h/lCmdktPwCjVVyaoLALxP0oD
  38.                                             talRwLKRJuD91p6YxrAeN3eRkGWoYXH5bSrSBR+5id5yBplxayVrozJXFpOFySTr
  39.                                             CHD2snnfjmn39dKsRjwRjKG/zKUPO54GPovvrODK32c1xiKpQQ7XAzyXPNij3MWP
  40.                                             JFu6z24eNdILm4wF1jFWQlrsca0znpjoAVFYe1yp1lXAtYlxgNURMQ2RwvBtnT3B
  41.                                             UhUP382GYd0XPdV1xodOaJVf8ce3YImrGaAYjPjbTPTbTyzwcHyc1LHwYw4W7aYi
  42.                                             TyX8p5+7PkdkRr8uiKA9iFhH6iq+7MPv5O0FNGSktGZkyFSKg9vazQmESlUC+blC
  43.                                             2yQRBJsqV84weMKGCURg3jxetTfENHJ8N+H9pnacvRjl5O5cZjECOi4XrGAUd4bv
  44.                                             qKBfZ1OnB1htWGEjPyGhKzmAG8vzf0GVtAK88qhuYM7FceTYJsqUnzFnEHUCAwEA
  45.                                             AQKCAgAJNMGmVjHtIrZjLHEaulB9+sIgGSLR89NuFMHWWLryZVWHYwBY/oqgUOIh
  46.                                             2u82hjLPPjaTGXq3O3CXA91JUD9QgaPsB2LsbZ+Y+9rdmL8aHrvjhqbi1DRMaEKB
  47.                                             LB8Iqh5rv0UvG81NUrZN0R8ofVnNC42fvscU2H0Eyff8jq7CtS1PiP4iwN16AkLs
  48.                                             Kh7B9Qkf56z7Im9/7Qb9yCzOJOfwDIpegH/XtSNsxXBh4JnrHZSkwFrmk0RYmTO/
  49.                                             Vey3cU6eNc5h2ODFLgk6mxlpZ3s50zgE7Xskkb8X0Q4rkRz0KjlvqZousvmxwsSq
  50.                                             M3lIuedDOCQJ0X2yZRd54Sq5UjrgWKWc7LT9qeiUYmdx3LM6LbG+DzGLHgQ7SkpT
  51.                                             ZmOKmXOWtjQ/4LOF1vDS3vK7aGU6QjebswKCZv/b9hDiA2AWtoVM3rOlPc1ypif+
  52.                                             Uoq1PLxnjxIfptdwlZf9n9ol6+5K2E2PeV9d3nJ+idmoi7EnGNUB/kgud3Rv5uZ7
  53.                                             Ftf/cqHgUiwYuMR/n40xR4tx6w8SSIL31c83OZQbOsh/7fN89FWxqYeDzAir4Yj7
  54.                                             ozAUteyAnBn70BO0SzsNnt6jGwDcnyQuQtAnnoNgbEVzD6AOaTvmuKsx/RvDp+nv
  55.                                             OoeGVRSZusJYL/DexH8Rp2js+ai3wI7hnf4YBgG/jQTf3L9egQKCAQEA7Vu1mWOp
  56.                                             Nq96dCSIRBbu/3OhBhFDKuatxB1ZKoccADCaz4NqaWCUZr2PutSgDqc8qqIldnwr
  57.                                             0Cxojj658MJmMehECOsDiEBRlCsZX3ghstVzdbnuhGEsC4RBaaIY9Ik0Jj0b40Fa
  58.                                             GDEAULk0cOucA3bPhyPiaGuo9dHQbREIGKqmGMxgSSm6CeuQcon253U5jNfrY3se
  59.                                             LlLcBYKAAJMLW9c8niTZPXZA62nyGVH4aaLiyB+NodRgSO/zNwR2vMTxdJbCBQJ7
  60.                                             YJhiuGqYGSLnIf7MUBg5X0jL0oShNGngcCtLSwXwP3I0+AnMaKQo+93+gILy4J2Q
  61.                                             yzkK0guR7E6x9QKCAQEApxlFn3smcad8SeI0fXd8nBLhk4GbNXCy+fMTy11zXmVJ
  62.                                             M2HeE6u+nGLoaMrdL0IFyVOTDV6Cn5k1iPLFMTcGdLqrS+j/ICZh0+F0qg7x1inp
  63.                                             O3Fsgp4C0eebcigk9//GCkFAvDfgfAPB3G6R6qA+xIq7P6M/D2Iy4wNQaeyK+ubC
  64.                                             AIUydF9sdLgn/cwwBbo6E9GPr6LHy1AbNvK8/WkogKnXONocjejiE6Y45RcK7Ci/
  65.                                             iG1MlvTeXMT7A0ccKrJDxipfhpLfENS7TClvOoi6T5mGj4tAGaU1YqBC6FLB8Fk1
  66.                                             NR3BsByc/xShzmdelRlE5ZkD76dkt58KK9Dcpg9UgQKCAQBWFOSPdK1xv8JRTM5+
  67.                                             ozKaQn0rjicl7/MlJN+ppMZq6zW5/JcjEHvBpw3xXBuQNOazm4qqpe3d2b0xmV4m
  68.                                             Ctq1Tt8dvN3TFECB0/+nuBHAodj14TC3oeYvZw+yF6+lP/1BwPfUO2dJTrwmioSS
  69.                                             T2CNgRFSmZkK9cCZJjbI11xwVbNXWwewgQmPf3crkw2Qc9sjUUt1ELmpYzOYa/Ow
  70.                                             QaPk8vJxCDwhJjn1Jr8+n5PP+9rzaT4casFgsmUqltvZKjPHbMWAu52zMpDbAQ2Y
  71.                                             UCgzFA1VHvPvsp75AlDUiXF0PL9ZvhWbbPf43NTdPmv+rEwYn2UmQP66NT3PX5LU
  72.                                             eNXhAoIBAQCfb9miphq0bx6EULXM0WmwccOSvyOdBf9/xpOog25FL1d9E3CWTFT/
  73.                                             WtBuzMHnCZQD2R6Crx7rsYAHP70vjFU4o7Q2JgboYjcNuB1c9g2CT1MfSMZEiwgd
  74.                                             yGPltLAxgXcw6boe3SHwspUTAt1vhZ7eYZDw046j2wq62Lqtlum1JOEPJghSSYpu
  75.                                             hBiEbYOUs3Ae4OG8sBD6yWBuOYZiNShUO7oDoPmF3iN4pC29SRM+6lJ2lfNyRgq1
  76.                                             ca4gHoWdp6JLPrsO6Ky2noRn01EyBKvgr5hY9oEe9yfNByVQD0bFUhkWqWHZ7DNQ
  77.                                             oBsTmkYA9a9rc2jyDkJngfRugkdGm3IBAoIBAHrY2yYT59hFXq99HvH2MB5QcMlv
  78.                                             TtOqjs1tmE3Mpivyg9YNvDeDTv1qOZn8xUd959nJrHSqN8me86P12DTQPCzdhIRT
  79.                                             MM/bNjr6/bHhKG3nF/Xkln4hK5YtSH1PjCml+VEoUPFwgsWvn2dhYwsQ1wiarwkL
  80.                                             FzIijlLmfuLGvS8kTPMRXert4UWZcXRD8B/MypYt3uMjLbeXIAHuOG9wjuuV/Yla
  81.                                             XJBgOImw0Jhib7NqS0BKv3SvhHA7olduqOv9z0yGHXcHZKxB6O7+YKATc1nszjwc
  82.                                             cAEm30c3/mhCHPuathM0laKV36Z4hp2y8ginJdK7gZQSkyzjRDI2yx5cq6U=
  83.                                             -----END RSA PRIVATE KEY-----";
  85.         //网站生成
  86.         static string _publicKeyStringWeb = @"-----BEGIN PUBLIC KEY-----
  87.                                             MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCPNZe67AfIs2rFWLp5HZ6y8VG/
  88.                                             ybhhE0Q9WmkdnPXFGSN9j3M8Uglmh78MCfawm9goHnvMl5c8ta2dDnKZi+WWuZ6D
  89.                                             K+OOS/kBgR9cLMci+9bI7NA8/spxbVBbKDlgyRWPle65Nm7foX3OamNJe6uoMaLL
  90.                                             Y/jWSdwxPsp1jp8GJwIDAQAB
  91.                                             -----END PUBLIC KEY-----";
  92.         static string _privateKeyStringWeb = @"-----BEGIN RSA PRIVATE KEY-----
  93.                                             Proc-Type: 4,ENCRYPTED
  94.                                             DEK-Info: DES-EDE3-CBC,EF30E5A772A723B5
  95.                                             8DS2obJNGC9M2GJuxID6mZV5p4k+oxgv1fEILJ+CwpzJ0lAGspDiqLgxSKmETZiE
  96.                                             ct9zCkEEABTarhBspC1i4O4np4nO+z40iTvDwu88bDMvWvEV2EYYaJn9ZelJZ51y
  97.                                             KHEJw4fncvZN8ULNBZ7Fnn9Y6+pLW6IJrSHTL7TrN1gi257LAX5xUgHvNqet4XMl
  98.                                             UKoX0DmDZkCFdnn3a/DQUA4au8rrotsU/ihBDFMMGljA/QKPApnuy07+KyXtaDx6
  99.                                             YlBMifqbsuYLOvNMT9aqbAPp5OFdykTnfPRPnx9xHuTqXE8NfInYvSMkcC8lpUrt
  100.                                             M8wsCVaRukliBOSyNYxyqMZwBJMXrY9+lyZMi6/g6450HJ0NBOC8/mc5Gj8nD6L6
  101.                                             tjkkFyS/t4aU7lZWqh4oMRHPwDQqrgSZB13lBveXVSoTpVOzvgV2vEC6p9s+IGIC
  102.                                             +WpNRq55zWtj8EsZly/p91NlrHujDQsEyrkUDUE3xjon66vQow9jRwYngA0VWeL8
  103.                                             dO9XN/srJ4jQB4I/wx9X7MfDJzVF/RrHT42QVfeqsPx071TJAd3+GqJS0+B1FaS8
  104.                                             PoTCY4yor2ViTOS/NfZEs0SyC1U9t41FTIEnfnZVqEF54Hy3l8kCrTjVc2Vm2HAG
  105.                                             /DAzGgbdOV8KJKdWFpc5+aQde5j2xxd4LwF8kKTSLaRonVMhBJ4LBLPn9NsdU7vw
  106.                                             MyFyLnHb4qsilAC3P2Ui8MJP2kJsqO1ho3V9ITG8IzxiZmpLLL1D8GAJoaDtDxhu
  107.                                             MtQZQpgpuW7CaVItZrxrmBbdMXpGW/GkOhySZVI0au04GfPHQtssAQ==
  108.                                             -----END RSA PRIVATE KEY-----";
  110.         static string _encryptedWithPublicStr = @"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";
  112.         static string _encryptedWithPrivateStr = @"dkOvosyTPPOrAglholTHEqu/RoyQv1Ih7qy/SsuxjoO92ZpL4alNhso6snPyooZmOBP/ljb91BEXaaqqaLneYzvlvEAqJPKXyOvYFREhcwLXCE9dIbn0NPs7srRETd0JqeQFyRv6qGvoA2aXg4Fxch7cANqpKY03eb3htuqTTranAZsPT3SYZPKOxK4wgfU/63wDBCWEO0SeNga86QgLpfcQ0DRukqNVr64lDt2QddUqeKxbnAJM2u2xpwnGayFDKP03BjV6rXnId7NlkgkoqZw3SpyOg5HOe/4tTbRQ4gjH6N5Q4VnyFGehOw3SH/KNWT/KaE2anI9vWCZHy0ia8mxiBKH0vuJl3WEoR1JPFmhSrbcemrWpgc0a8r6CJQRMefYw18z3AuHRu3vAOPEtS9bXaySpQ0PLjS/pxG3Y1MTZLQPBvCcY77Ghr35UNJ2Z8XIbiwt9dqs0Az7y6ARj2qyz+96ZQkstrDJw4OikZj0w6olHoL9WQ2b04S7wz6GE87/5AS3hphZJNwFpvHxaUWTRYf+N2r9GrjM3nplYqBAQwz1XI65qhQL4PBK7/4HTgkVBDNRsJNHOJp5Uq4+UtZYwgwLOjxhBG5dlLJMCbZvABqE8e4gRLDv8wfBiC8qS4CxhOz3HuxW+KdZFkEG9Qajf/hxEzwUoxf+mLagdp1U=";
  114.         static string _encryptedWithPublicWebStr = @"KRC9OJ3R981IsvBJ33Z9eDJHgg5+EOcnh95yZA1HDPeOnn7+s7n7TH4yyIOVAS677bESftzcNfhyCCrDVb7GkRBTu3UgMlkl/KlkC4a8yS2skks5TwYkjPmr2I31PCZzg9JuH0eo3S4oXzqg9NVhgW37kUgRjjbH489XFYeUQEM=";
  116.         static string _encryptedWithPrivateWebStr = @"i8lGOft4QH781r5+GUuzp3zEjmmpyw3N7qjj6wKH6LRjxzzCwxJqyewztmosrO9aJt/0LEew5wMSt/xWjrHNiaiAdxnI0UX7i7TZWNASXe1Sie/+36egYfu5x4BctIh2NPP3c6HixVJzQ2I5vtuKK2UPEw8yu5kH3p7+Ifp7CbU=";
  118.         static void Main(string[] args)
  119.         {
  121.             Console.WriteLine("Hello World!");
  123.             //var jsonStr = JsonConvert.SerializeObject(new Test { Name = "塞尔达荒野之息" });
  124.             //var jsonByte = Convert.ToByte(jsonStr);
  125.             //Console.WriteLine(jsonStr);
  127.             //GenRSAKeyPair("xjl");
  128.             //RsaEncryptWithPublic("yahaha");
  129.             //RsaEncryptWithPrivate("link");
  131.             string encryptedTxt = RsaEncryptWithPublic(new Test { Name = "喷射战士2haha" });
  132.             //RsaDecryptWithPrivate(_encryptedWithPublicStr);
  133.             RsaDecryptWithPrivate(encryptedTxt);
  135.             //RsaEncryptWithPrivate(new Test { Name = "odessey" });
  136.             //RsaDecryptWithPublic(_encryptedWithPrivateStr);
  138.             Console.ReadLine();
  139.         }
  141.         public static void GenRSAKeyPair(string name)
  142.         {
  143.             var generator = new RsaKeyPairGenerator();
  144.             var seed = Encoding.UTF8.GetBytes(name);
  145.             var secureRandom = new SecureRandom();
  146.             secureRandom.SetSeed(seed);
  147.             generator.Init(new KeyGenerationParameters(secureRandom, 4096));
  148.             var pair = generator.GenerateKeyPair();
  150.             //第一种方案
  151.             //var privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(pair.Private);
  152.             //var serializedPrivateBytes = privateKeyInfo.ToAsn1Object().GetDerEncoded();
  153.             //var serializedPrivate = Convert.ToBase64String(serializedPrivateBytes);
  154.             //Console.WriteLine("Private Key：" + serializedPrivate);
  156.             //var publickKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(pair.Public);
  157.             //var serializedPublicBytes = publickKeyInfo.ToAsn1Object().GetDerEncoded();
  158.             //var serializedPublic = Convert.ToBase64String(serializedPublicBytes);
  159.             //Console.WriteLine("Public Key：" + serializedPublic);
  161.             //第二种方案
  162.             var twPrivate = new StringWriter();
  163.             PemWriter pwPrivate = new PemWriter(twPrivate);
  164.             pwPrivate.WriteObject(pair.Private);
  165.             pwPrivate.Writer.Flush();
  166.             var privateKey = twPrivate.ToString();
  167.             Console.WriteLine("Private Key：" + privateKey);
  169.             var twPublic = new StringWriter();
  170.             PemWriter pwPublic = new PemWriter(twPublic);
  171.             pwPublic.WriteObject(pair.Public);
  172.             pwPublic.Writer.Flush();
  173.             var publicKey = twPublic.ToString();
  174.             Console.WriteLine("Public Key：" + publicKey);
  175.         }
  177.         /// <summary>
  178.         /// 公钥加密
  179.         /// </summary>
  180.         /// <param name="dataToEncrypt">待加密文本</param>
  181.         //public static void RsaEncryptWithPublic(string dataToEncrypt)
  182.         public static string RsaEncryptWithPublic(Test dataToEncrypt)
  183.         {
  184.             var bytesToEncrypt = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(dataToEncrypt));
  186.             var encryptEngine = new Pkcs1Encoding(new RsaEngine());
  187.             using (var txtReader = new StringReader(_publicKeyString))
  188.             {
  189.                 var keyParameter = (AsymmetricKeyParameter)new PemReader(txtReader).ReadObject();
  190.                 encryptEngine.Init(true, keyParameter);
  191.             }
  192.             var encryptedText = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
  194.             // 获取publickKey对应的keyParameter的第一种方法
  195.             //var stringReader = new StringReader(_publicKeyString);
  196.             //var pemReader = new Org.BouncyCastle.OpenSsl.PemReader(stringReader);
  197.             //var keyParameter = (AsymmetricKeyParameter)pemReader.ReadObject();
  199.             // 获取publickKey对应的keyparameter的第二种方法
  200.             //var publicKey = Convert.FromBase64String(_publicKeyString);
  201.             //var keyParameter = PublicKeyFactory.CreateKey(publicKey);
  203.             //用公钥加密的第一种方法
  204.             //var engine = new RsaEngine();
  205.             //engine.Init(true, keyParamter);
  206.             //var blockSize = engine.GetInputBlockSize();
  207.             //return engine.ProcessBlock(data, 0, blockSize);
  209.             //用公钥加密的第二种方法
  210.             //IBufferedCipher cipher = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding");
  211.             //cipher.Init(true, keyParameter);
  212.             //var encryptedText = Convert.ToBase64String(cipher.DoFinal(bytesToEncrypt));
  213.             Console.WriteLine("利用公钥加密后的数据：" + encryptedText);
  214.             return encryptedText;
  215.         }
  217.         /// <summary>
  218.         /// 私钥加密
  219.         /// </summary>
  220.         /// <param name="dataToEncrypt">待加密文本</param>
  221.         //public static void RsaEncryptWithPrivate(string dataToEncrypt)
  222.         public static void RsaEncryptWithPrivate(Test dataToEncrypt)
  223.         {
  224.             var bytesToEncrypt = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(dataToEncrypt));
  225.             var encryptEngine = new Pkcs1Encoding(new RsaEngine());
  226.             using (var txtReader = new StringReader(_privateKeyString))
  227.             {
  228.                 var keyPair = (AsymmetricCipherKeyPair)new PemReader(txtReader,new PasswordFinder("xjl")).ReadObject();
  229.                 encryptEngine.Init(true, keyPair.Private);
  230.             }
  231.             var encryptedText = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
  232.             Console.WriteLine("利用私钥加密后的数据：" + encryptedText);
  233.         }
  235.         public class Test
  236.         {
  237.             public string Name { get; set; }
  238.         }
  240.         /// <summary>
  241.         /// 私钥解密
  242.         /// </summary>
  243.         /// <param name="dataToDecrypt">待解密的数据</param>
  244.         public static void RsaDecryptWithPrivate(string dataToDecrypt)
  245.         {
  246.             var bytesToDecrypt = Convert.FromBase64String(dataToDecrypt);
  248.             // 获取privatekey对应的keyparameter的第一种方法
  249.             var stringReader = new StringReader(_privateKeyString);
  250.             //var pemReader = new Org.BouncyCastle.Utilities.IO.Pem.PemReader(stringReader);
  251.             var pemReader = new PemReader(stringReader, new PasswordFinder("xjl"));
  252.             var keyPair = (AsymmetricCipherKeyPair)pemReader.ReadObject();
  253.             var keyParameter = keyPair.Private;
  255.             // 获取privatekey对应的keyparameter的第二种方法
  256.             //var publicKey = Convert.FromBase64String(_publicKeyString);
  257.             //var keyParameter = PublicKeyFactory.CreateKey(publicKey);
  259.             // 用私钥解密的第一种方法
  260.             //var engine = new RsaEngine();
  261.             //engine.Init(false, keyParameter);
  262.             //var blockSize = engine.GetInputBlockSize();
  263.             //engine.ProcessBlock(dataToDecrypt, 0, blockSize);
  265.             // 用私钥解密的第二种方法
  266.             IBufferedCipher cipher = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding");
  267.             cipher.Init(false, keyParameter);
  268.             var decipheredBytes = cipher.DoFinal(bytesToDecrypt);
  270.             var decipheredText = Encoding.UTF8.GetString(decipheredBytes);
  272.             Console.WriteLine("用私钥解密后的数据：" + decipheredText);
  273.         }
  275.         /// <summary>
  276.         /// 公钥解密
  277.         /// </summary>
  278.         /// <param name="dataToDecrypt">待解密的数据</param>
  279.         public static void RsaDecryptWithPublic(string dataToDecrypt)
  280.         {
  281.             var bytesToDecrypt = Convert.FromBase64String(dataToDecrypt);
  283.             // 获取privatekey对应的keyparameter的第一种方法
  284.             var stringReader = new StringReader(_publicKeyString);
  285.             //var pemReader = new Org.BouncyCastle.Utilities.IO.Pem.PemReader(stringReader);
  286.             var pemReader = new PemReader(stringReader);
  287.             var keyParameter = (AsymmetricKeyParameter)pemReader.ReadObject();
  289.             // 获取privatekey对应的keyparameter的第二种方法
  290.             //var publicKey = Convert.FromBase64String(_publicKeyString);
  291.             //var keyParameter = PublicKeyFactory.CreateKey(publicKey);
  293.             // 用私钥解密的第一种方法
  294.             //var engine = new RsaEngine();
  295.             //engine.Init(false, keyParameter);
  296.             //var blockSize = engine.GetInputBlockSize();
  297.             //engine.ProcessBlock(dataToDecrypt, 0, blockSize);
  299.             // 用私钥解密的第二种方法
  300.             IBufferedCipher cipher = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding");
  301.             cipher.Init(false, keyParameter);
  302.             var decipheredBytes = cipher.DoFinal(bytesToDecrypt);
  304.             var decipheredText = Encoding.UTF8.GetString(decipheredBytes);
  306.             Console.WriteLine("用公钥解密后的数据：" + decipheredText);
  307.         }
  308.     }
  309. }

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