NetCore 生成RSA公私钥对，公钥加密私钥解密，私钥加密公钥解密

NetCore 生成RSA公私钥对，公钥加密私钥解密，私钥加密公钥解密

using Newtonsoft.Json;
using Org.BouncyCastle.Crypto;
using Org.BouncyCastle.Crypto.Encodings;
using Org.BouncyCastle.Crypto.Engines;
using Org.BouncyCastle.Crypto.Generators;
using Org.BouncyCastle.OpenSsl;
using Org.BouncyCastle.Pkcs;
using Org.BouncyCastle.Security;
using Org.BouncyCastle.X509;
using System;
using System.IO;
using System.Text;

namespace ConsoleAppTest
{
    class Program
    {
        //自己生成
        static string _publicKeyString = @"-----BEGIN PUBLIC KEY-----
                                            MIICIjANBgkqhkiG9w0BAQEFAAOCAg8AMIICCgKCAgEAmu5B+WIU9ZK+uy11qmdj
                                            KygwcH6r8YOui2jc87pWShKAEnEE2Q81twgQ4KGFylodpNsXs+EGeQA8HUiDKK11
                                            Pm6AMzrqHQ8rtNNWbQA6Ca+BJJHEoyrizaHTGLWU7oHe9TcRQ8Iq5vihF74x1jD2
                                            BHXpgR6KUhx9DUMFgdwpLXhZ2EgG85eOuajcHl+tLN52bEpGwSHyL5iWuX2U5qfN
                                            Ln3h/lCmdktPwCjVVyaoLALxP0oDtalRwLKRJuD91p6YxrAeN3eRkGWoYXH5bSrS
                                            BR+5id5yBplxayVrozJXFpOFySTrCHD2snnfjmn39dKsRjwRjKG/zKUPO54GPovv
                                            rODK32c1xiKpQQ7XAzyXPNij3MWPJFu6z24eNdILm4wF1jFWQlrsca0znpjoAVFY
                                            e1yp1lXAtYlxgNURMQ2RwvBtnT3BUhUP382GYd0XPdV1xodOaJVf8ce3YImrGaAY
                                            jPjbTPTbTyzwcHyc1LHwYw4W7aYiTyX8p5+7PkdkRr8uiKA9iFhH6iq+7MPv5O0F
                                            NGSktGZkyFSKg9vazQmESlUC+blC2yQRBJsqV84weMKGCURg3jxetTfENHJ8N+H9
                                            pnacvRjl5O5cZjECOi4XrGAUd4bvqKBfZ1OnB1htWGEjPyGhKzmAG8vzf0GVtAK8
                                            8qhuYM7FceTYJsqUnzFnEHUCAwEAAQ==
                                            -----END PUBLIC KEY-----";
        static string _privateKeyString = @"-----BEGIN RSA PRIVATE KEY-----
                                            MIIJKAIBAAKCAgEAmu5B+WIU9ZK+uy11qmdjKygwcH6r8YOui2jc87pWShKAEnEE
                                            2Q81twgQ4KGFylodpNsXs+EGeQA8HUiDKK11Pm6AMzrqHQ8rtNNWbQA6Ca+BJJHE
                                            oyrizaHTGLWU7oHe9TcRQ8Iq5vihF74x1jD2BHXpgR6KUhx9DUMFgdwpLXhZ2EgG
                                            85eOuajcHl+tLN52bEpGwSHyL5iWuX2U5qfNLn3h/lCmdktPwCjVVyaoLALxP0oD
                                            talRwLKRJuD91p6YxrAeN3eRkGWoYXH5bSrSBR+5id5yBplxayVrozJXFpOFySTr
                                            CHD2snnfjmn39dKsRjwRjKG/zKUPO54GPovvrODK32c1xiKpQQ7XAzyXPNij3MWP
                                            JFu6z24eNdILm4wF1jFWQlrsca0znpjoAVFYe1yp1lXAtYlxgNURMQ2RwvBtnT3B
                                            UhUP382GYd0XPdV1xodOaJVf8ce3YImrGaAYjPjbTPTbTyzwcHyc1LHwYw4W7aYi
                                            TyX8p5+7PkdkRr8uiKA9iFhH6iq+7MPv5O0FNGSktGZkyFSKg9vazQmESlUC+blC
                                            2yQRBJsqV84weMKGCURg3jxetTfENHJ8N+H9pnacvRjl5O5cZjECOi4XrGAUd4bv
                                            qKBfZ1OnB1htWGEjPyGhKzmAG8vzf0GVtAK88qhuYM7FceTYJsqUnzFnEHUCAwEA
                                            AQKCAgAJNMGmVjHtIrZjLHEaulB9+sIgGSLR89NuFMHWWLryZVWHYwBY/oqgUOIh
                                            2u82hjLPPjaTGXq3O3CXA91JUD9QgaPsB2LsbZ+Y+9rdmL8aHrvjhqbi1DRMaEKB
                                            LB8Iqh5rv0UvG81NUrZN0R8ofVnNC42fvscU2H0Eyff8jq7CtS1PiP4iwN16AkLs
                                            Kh7B9Qkf56z7Im9/7Qb9yCzOJOfwDIpegH/XtSNsxXBh4JnrHZSkwFrmk0RYmTO/
                                            Vey3cU6eNc5h2ODFLgk6mxlpZ3s50zgE7Xskkb8X0Q4rkRz0KjlvqZousvmxwsSq
                                            M3lIuedDOCQJ0X2yZRd54Sq5UjrgWKWc7LT9qeiUYmdx3LM6LbG+DzGLHgQ7SkpT
                                            ZmOKmXOWtjQ/4LOF1vDS3vK7aGU6QjebswKCZv/b9hDiA2AWtoVM3rOlPc1ypif+
                                            Uoq1PLxnjxIfptdwlZf9n9ol6+5K2E2PeV9d3nJ+idmoi7EnGNUB/kgud3Rv5uZ7
                                            Ftf/cqHgUiwYuMR/n40xR4tx6w8SSIL31c83OZQbOsh/7fN89FWxqYeDzAir4Yj7
                                            ozAUteyAnBn70BO0SzsNnt6jGwDcnyQuQtAnnoNgbEVzD6AOaTvmuKsx/RvDp+nv
                                            OoeGVRSZusJYL/DexH8Rp2js+ai3wI7hnf4YBgG/jQTf3L9egQKCAQEA7Vu1mWOp
                                            Nq96dCSIRBbu/3OhBhFDKuatxB1ZKoccADCaz4NqaWCUZr2PutSgDqc8qqIldnwr
                                            0Cxojj658MJmMehECOsDiEBRlCsZX3ghstVzdbnuhGEsC4RBaaIY9Ik0Jj0b40Fa
                                            GDEAULk0cOucA3bPhyPiaGuo9dHQbREIGKqmGMxgSSm6CeuQcon253U5jNfrY3se
                                            LlLcBYKAAJMLW9c8niTZPXZA62nyGVH4aaLiyB+NodRgSO/zNwR2vMTxdJbCBQJ7
                                            YJhiuGqYGSLnIf7MUBg5X0jL0oShNGngcCtLSwXwP3I0+AnMaKQo+93+gILy4J2Q
                                            yzkK0guR7E6x9QKCAQEApxlFn3smcad8SeI0fXd8nBLhk4GbNXCy+fMTy11zXmVJ
                                            M2HeE6u+nGLoaMrdL0IFyVOTDV6Cn5k1iPLFMTcGdLqrS+j/ICZh0+F0qg7x1inp
                                            O3Fsgp4C0eebcigk9//GCkFAvDfgfAPB3G6R6qA+xIq7P6M/D2Iy4wNQaeyK+ubC
                                            AIUydF9sdLgn/cwwBbo6E9GPr6LHy1AbNvK8/WkogKnXONocjejiE6Y45RcK7Ci/
                                            iG1MlvTeXMT7A0ccKrJDxipfhpLfENS7TClvOoi6T5mGj4tAGaU1YqBC6FLB8Fk1
                                            NR3BsByc/xShzmdelRlE5ZkD76dkt58KK9Dcpg9UgQKCAQBWFOSPdK1xv8JRTM5+
                                            ozKaQn0rjicl7/MlJN+ppMZq6zW5/JcjEHvBpw3xXBuQNOazm4qqpe3d2b0xmV4m
                                            Ctq1Tt8dvN3TFECB0/+nuBHAodj14TC3oeYvZw+yF6+lP/1BwPfUO2dJTrwmioSS
                                            T2CNgRFSmZkK9cCZJjbI11xwVbNXWwewgQmPf3crkw2Qc9sjUUt1ELmpYzOYa/Ow
                                            QaPk8vJxCDwhJjn1Jr8+n5PP+9rzaT4casFgsmUqltvZKjPHbMWAu52zMpDbAQ2Y
                                            UCgzFA1VHvPvsp75AlDUiXF0PL9ZvhWbbPf43NTdPmv+rEwYn2UmQP66NT3PX5LU
                                            eNXhAoIBAQCfb9miphq0bx6EULXM0WmwccOSvyOdBf9/xpOog25FL1d9E3CWTFT/
                                            WtBuzMHnCZQD2R6Crx7rsYAHP70vjFU4o7Q2JgboYjcNuB1c9g2CT1MfSMZEiwgd
                                            yGPltLAxgXcw6boe3SHwspUTAt1vhZ7eYZDw046j2wq62Lqtlum1JOEPJghSSYpu
                                            hBiEbYOUs3Ae4OG8sBD6yWBuOYZiNShUO7oDoPmF3iN4pC29SRM+6lJ2lfNyRgq1
                                            ca4gHoWdp6JLPrsO6Ky2noRn01EyBKvgr5hY9oEe9yfNByVQD0bFUhkWqWHZ7DNQ
                                            oBsTmkYA9a9rc2jyDkJngfRugkdGm3IBAoIBAHrY2yYT59hFXq99HvH2MB5QcMlv
                                            TtOqjs1tmE3Mpivyg9YNvDeDTv1qOZn8xUd959nJrHSqN8me86P12DTQPCzdhIRT
                                            MM/bNjr6/bHhKG3nF/Xkln4hK5YtSH1PjCml+VEoUPFwgsWvn2dhYwsQ1wiarwkL
                                            FzIijlLmfuLGvS8kTPMRXert4UWZcXRD8B/MypYt3uMjLbeXIAHuOG9wjuuV/Yla
                                            XJBgOImw0Jhib7NqS0BKv3SvhHA7olduqOv9z0yGHXcHZKxB6O7+YKATc1nszjwc
                                            cAEm30c3/mhCHPuathM0laKV36Z4hp2y8ginJdK7gZQSkyzjRDI2yx5cq6U=
                                            -----END RSA PRIVATE KEY-----";

        //网站生成
        static string _publicKeyStringWeb = @"-----BEGIN PUBLIC KEY-----
                                            MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCPNZe67AfIs2rFWLp5HZ6y8VG/
                                            ybhhE0Q9WmkdnPXFGSN9j3M8Uglmh78MCfawm9goHnvMl5c8ta2dDnKZi+WWuZ6D
                                            K+OOS/kBgR9cLMci+9bI7NA8/spxbVBbKDlgyRWPle65Nm7foX3OamNJe6uoMaLL
                                            Y/jWSdwxPsp1jp8GJwIDAQAB
                                            -----END PUBLIC KEY-----";
        static string _privateKeyStringWeb = @"-----BEGIN RSA PRIVATE KEY-----
                                            Proc-Type: 4,ENCRYPTED
                                            DEK-Info: DES-EDE3-CBC,EF30E5A772A723B5
                                            8DS2obJNGC9M2GJuxID6mZV5p4k+oxgv1fEILJ+CwpzJ0lAGspDiqLgxSKmETZiE
                                            ct9zCkEEABTarhBspC1i4O4np4nO+z40iTvDwu88bDMvWvEV2EYYaJn9ZelJZ51y
                                            KHEJw4fncvZN8ULNBZ7Fnn9Y6+pLW6IJrSHTL7TrN1gi257LAX5xUgHvNqet4XMl
                                            UKoX0DmDZkCFdnn3a/DQUA4au8rrotsU/ihBDFMMGljA/QKPApnuy07+KyXtaDx6
                                            YlBMifqbsuYLOvNMT9aqbAPp5OFdykTnfPRPnx9xHuTqXE8NfInYvSMkcC8lpUrt
                                            M8wsCVaRukliBOSyNYxyqMZwBJMXrY9+lyZMi6/g6450HJ0NBOC8/mc5Gj8nD6L6
                                            tjkkFyS/t4aU7lZWqh4oMRHPwDQqrgSZB13lBveXVSoTpVOzvgV2vEC6p9s+IGIC
                                            +WpNRq55zWtj8EsZly/p91NlrHujDQsEyrkUDUE3xjon66vQow9jRwYngA0VWeL8
                                            dO9XN/srJ4jQB4I/wx9X7MfDJzVF/RrHT42QVfeqsPx071TJAd3+GqJS0+B1FaS8
                                            PoTCY4yor2ViTOS/NfZEs0SyC1U9t41FTIEnfnZVqEF54Hy3l8kCrTjVc2Vm2HAG
                                            /DAzGgbdOV8KJKdWFpc5+aQde5j2xxd4LwF8kKTSLaRonVMhBJ4LBLPn9NsdU7vw
                                            MyFyLnHb4qsilAC3P2Ui8MJP2kJsqO1ho3V9ITG8IzxiZmpLLL1D8GAJoaDtDxhu
                                            MtQZQpgpuW7CaVItZrxrmBbdMXpGW/GkOhySZVI0au04GfPHQtssAQ==
                                            -----END RSA PRIVATE KEY-----";

        static string _encryptedWithPublicStr = @"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";

        static string _encryptedWithPrivateStr = @"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";

        static string _encryptedWithPublicWebStr = @"KRC9OJ3R981IsvBJ33Z9eDJHgg5+EOcnh95yZA1HDPeOnn7+s7n7TH4yyIOVAS677bESftzcNfhyCCrDVb7GkRBTu3UgMlkl/KlkC4a8yS2skks5TwYkjPmr2I31PCZzg9JuH0eo3S4oXzqg9NVhgW37kUgRjjbH489XFYeUQEM=";

        static string _encryptedWithPrivateWebStr = @"i8lGOft4QH781r5+GUuzp3zEjmmpyw3N7qjj6wKH6LRjxzzCwxJqyewztmosrO9aJt/0LEew5wMSt/xWjrHNiaiAdxnI0UX7i7TZWNASXe1Sie/+36egYfu5x4BctIh2NPP3c6HixVJzQ2I5vtuKK2UPEw8yu5kH3p7+Ifp7CbU=";

        static void Main(string[] args)
        {

            Console.WriteLine("Hello World!");

            //var jsonStr = JsonConvert.SerializeObject(new Test { Name = "塞尔达荒野之息" });
            //var jsonByte = Convert.ToByte(jsonStr);
            //Console.WriteLine(jsonStr);

            //GenRSAKeyPair("xjl");
            //RsaEncryptWithPublic("yahaha");
            //RsaEncryptWithPrivate("link");

            string encryptedTxt = RsaEncryptWithPublic(new Test { Name = "喷射战士2haha" });
            //RsaDecryptWithPrivate(_encryptedWithPublicStr);
            RsaDecryptWithPrivate(encryptedTxt);

            //RsaEncryptWithPrivate(new Test { Name = "odessey" });
            //RsaDecryptWithPublic(_encryptedWithPrivateStr);

            Console.ReadLine();
        }

        public static void GenRSAKeyPair(string name)
        {
            var generator = new RsaKeyPairGenerator();
            var seed = Encoding.UTF8.GetBytes(name);
            var secureRandom = new SecureRandom();
            secureRandom.SetSeed(seed);
            generator.Init(new KeyGenerationParameters(secureRandom, 4096));
            var pair = generator.GenerateKeyPair();

            //第一种方案
            //var privateKeyInfo = PrivateKeyInfoFactory.CreatePrivateKeyInfo(pair.Private);
            //var serializedPrivateBytes = privateKeyInfo.ToAsn1Object().GetDerEncoded();
            //var serializedPrivate = Convert.ToBase64String(serializedPrivateBytes);
            //Console.WriteLine("Private Key：" + serializedPrivate);

            //var publickKeyInfo = SubjectPublicKeyInfoFactory.CreateSubjectPublicKeyInfo(pair.Public);
            //var serializedPublicBytes = publickKeyInfo.ToAsn1Object().GetDerEncoded();
            //var serializedPublic = Convert.ToBase64String(serializedPublicBytes);
            //Console.WriteLine("Public Key：" + serializedPublic);

            //第二种方案
            var twPrivate = new StringWriter();
            PemWriter pwPrivate = new PemWriter(twPrivate);
            pwPrivate.WriteObject(pair.Private);
            pwPrivate.Writer.Flush();
            var privateKey = twPrivate.ToString();
            Console.WriteLine("Private Key：" + privateKey);

            var twPublic = new StringWriter();
            PemWriter pwPublic = new PemWriter(twPublic);
            pwPublic.WriteObject(pair.Public);
            pwPublic.Writer.Flush();
            var publicKey = twPublic.ToString();
            Console.WriteLine("Public Key：" + publicKey);
        }

        /// 

        /// 公钥加密
        /// 
        /// 待加密文本
        //public static void RsaEncryptWithPublic(string dataToEncrypt)
        public static string RsaEncryptWithPublic(Test dataToEncrypt)
        {
            var bytesToEncrypt = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(dataToEncrypt));

            var encryptEngine = new Pkcs1Encoding(new RsaEngine());
            using (var txtReader = new StringReader(_publicKeyString))
            {
                var keyParameter = (AsymmetricKeyParameter)new PemReader(txtReader).ReadObject();
                encryptEngine.Init(true, keyParameter);
            }
            var encryptedText = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));

            // 获取publickKey对应的keyParameter的第一种方法
            //var stringReader = new StringReader(_publicKeyString);
            //var pemReader = new Org.BouncyCastle.OpenSsl.PemReader(stringReader);
            //var keyParameter = (AsymmetricKeyParameter)pemReader.ReadObject();

            // 获取publickKey对应的keyparameter的第二种方法
            //var publicKey = Convert.FromBase64String(_publicKeyString);
            //var keyParameter = PublicKeyFactory.CreateKey(publicKey);

            //用公钥加密的第一种方法
            //var engine = new RsaEngine();
            //engine.Init(true, keyParamter);
            //var blockSize = engine.GetInputBlockSize();
            //return engine.ProcessBlock(data, 0, blockSize);

            //用公钥加密的第二种方法
            //IBufferedCipher cipher = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding");
            //cipher.Init(true, keyParameter);
            //var encryptedText = Convert.ToBase64String(cipher.DoFinal(bytesToEncrypt));
            Console.WriteLine("利用公钥加密后的数据：" + encryptedText);
            return encryptedText;
        }

        /// 

        /// 私钥加密
        /// 
        /// 待加密文本
        //public static void RsaEncryptWithPrivate(string dataToEncrypt)
        public static void RsaEncryptWithPrivate(Test dataToEncrypt)
        {
            var bytesToEncrypt = Encoding.UTF8.GetBytes(JsonConvert.SerializeObject(dataToEncrypt));
            var encryptEngine = new Pkcs1Encoding(new RsaEngine());
            using (var txtReader = new StringReader(_privateKeyString))
            {
                var keyPair = (AsymmetricCipherKeyPair)new PemReader(txtReader,new PasswordFinder("xjl")).ReadObject();
                encryptEngine.Init(true, keyPair.Private);
            }
            var encryptedText = Convert.ToBase64String(encryptEngine.ProcessBlock(bytesToEncrypt, 0, bytesToEncrypt.Length));
            Console.WriteLine("利用私钥加密后的数据：" + encryptedText);
        }

        public class Test
        {
            public string Name { get; set; }
        }

        /// 

        /// 私钥解密
        /// 
        /// 待解密的数据
        public static void RsaDecryptWithPrivate(string dataToDecrypt)
        {
            var bytesToDecrypt = Convert.FromBase64String(dataToDecrypt);

            // 获取privatekey对应的keyparameter的第一种方法
            var stringReader = new StringReader(_privateKeyString);
            //var pemReader = new Org.BouncyCastle.Utilities.IO.Pem.PemReader(stringReader);
            var pemReader = new PemReader(stringReader, new PasswordFinder("xjl"));
            var keyPair = (AsymmetricCipherKeyPair)pemReader.ReadObject();
            var keyParameter = keyPair.Private;

            // 获取privatekey对应的keyparameter的第二种方法
            //var publicKey = Convert.FromBase64String(_publicKeyString);
            //var keyParameter = PublicKeyFactory.CreateKey(publicKey);

            // 用私钥解密的第一种方法
            //var engine = new RsaEngine();
            //engine.Init(false, keyParameter);
            //var blockSize = engine.GetInputBlockSize();
            //engine.ProcessBlock(dataToDecrypt, 0, blockSize);

            // 用私钥解密的第二种方法
            IBufferedCipher cipher = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding");
            cipher.Init(false, keyParameter);
            var decipheredBytes = cipher.DoFinal(bytesToDecrypt);

            var decipheredText = Encoding.UTF8.GetString(decipheredBytes);

            Console.WriteLine("用私钥解密后的数据：" + decipheredText);
        }

        /// 

        /// 公钥解密
        /// 
        /// 待解密的数据
        public static void RsaDecryptWithPublic(string dataToDecrypt)
        {
            var bytesToDecrypt = Convert.FromBase64String(dataToDecrypt);

            // 获取privatekey对应的keyparameter的第一种方法
            var stringReader = new StringReader(_publicKeyString);
            //var pemReader = new Org.BouncyCastle.Utilities.IO.Pem.PemReader(stringReader);
            var pemReader = new PemReader(stringReader);
            var keyParameter = (AsymmetricKeyParameter)pemReader.ReadObject();

            // 获取privatekey对应的keyparameter的第二种方法
            //var publicKey = Convert.FromBase64String(_publicKeyString);
            //var keyParameter = PublicKeyFactory.CreateKey(publicKey);

            // 用私钥解密的第一种方法
            //var engine = new RsaEngine();
            //engine.Init(false, keyParameter);
            //var blockSize = engine.GetInputBlockSize();
            //engine.ProcessBlock(dataToDecrypt, 0, blockSize);

            // 用私钥解密的第二种方法
            IBufferedCipher cipher = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding");
            cipher.Init(false, keyParameter);
            var decipheredBytes = cipher.DoFinal(bytesToDecrypt);

            var decipheredText = Encoding.UTF8.GetString(decipheredBytes);

            Console.WriteLine("用公钥解密后的数据：" + decipheredText);
        }
    }
}