C# RSAHelper
using
using Org.BouncyCastle.Crypto; using Org.BouncyCastle.Crypto.Parameters; using Org.BouncyCastle.Math; using System; using System.IO; using System.Security.Cryptography; using System.Text;
Helper
/// <summary> /// RSA帮助类 /// </summary> public class RSAHelper { /// <summary> /// 生成密钥 /// </summary> /// <param name="privarteKey"></param> /// <param name="publicKey"></param> /// <param name="keySize"></param> public static void Generator(out string privarteKey, out string publicKey, int keySize = 1024) { RSACryptoServiceProvider rea = new RSACryptoServiceProvider(keySize); privarteKey = rea.ToXmlString(true); publicKey = rea.ToXmlString(false); } /// <summary> /// RSA加密数据 /// </summary> /// <param name="content">要加密数据</param> /// <param name="publickey">密匙容器的名称</param> /// <returns></returns> public static string RSAEncryption(string content, string publickey) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); byte[] cipherbytes; rsa.FromXmlString(publickey); cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false); return Convert.ToBase64String(cipherbytes); } /// <summary> /// RSA解密数据 /// </summary> /// <param name="content">要解密数据</param> /// <param name="privatekey">密匙容器的名称</param> /// <returns></returns> public static string RSADecrypt(string content, string privatekey) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); byte[] cipherbytes; rsa.FromXmlString(privatekey); cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false); return Encoding.UTF8.GetString(cipherbytes); } /// <summary> /// 生成数字签名 /// </summary> /// <param name="originalText">原文</param> /// <param name="privateKey"></param> /// <returns></returns> public static string GenSign(string originalText, string privateKey) { byte[] byteData = Encoding.UTF8.GetBytes(originalText); RSACryptoServiceProvider provider = new RSACryptoServiceProvider(); provider.FromXmlString(privateKey); //使用SHA1进行摘要算法，生成签名 byteData = provider.SignData(byteData, new SHA1CryptoServiceProvider()); return Convert.ToBase64String(byteData); } /// <summary> /// 验证签名 /// </summary> /// <param name="originalText">原文</param> /// <param name="signedData">签名</param> /// <param name="publicKey">公钥</param> /// <returns></returns> public static bool VerifySigned(string originalText, string signedData, string publicKey) { RSACryptoServiceProvider provider = new RSACryptoServiceProvider(); provider.FromXmlString(publicKey); byte[] byteData = Encoding.UTF8.GetBytes(originalText); byte[] signData = Convert.FromBase64String(signedData); return provider.VerifyData(byteData, new SHA1CryptoServiceProvider(), signData); } /// <summary> /// XML公钥转成Pem公钥 /// </summary> /// <param name="xmlPublicKey"></param> /// <returns></returns> public static string XmlPublicKeyToPem(string xmlPublicKey) { RSAParameters rsaParam; using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider()) { rsa.FromXmlString(xmlPublicKey); rsaParam = rsa.ExportParameters(false); } RsaKeyParameters param = new RsaKeyParameters(false, new BigInteger(1, rsaParam.Modulus), new BigInteger(1, rsaParam.Exponent)); string pemPublicKeyStr = null; using (var ms = new MemoryStream()) { using (var sw = new StreamWriter(ms)) { var pemWriter = new Org.BouncyCastle.OpenSsl.PemWriter(sw); pemWriter.WriteObject(param); sw.Flush(); byte[] buffer = new byte[ms.Length]; ms.Position = 0; ms.Read(buffer, 0, (int)ms.Length); pemPublicKeyStr = Encoding.UTF8.GetString(buffer); } } return pemPublicKeyStr; } /// <summary> /// Pem公钥转成XML公钥 /// </summary> /// <param name="pemPublicKeyStr"></param> /// <returns></returns> public static string PemPublicKeyToXml(string pemPublicKeyStr) { RsaKeyParameters pemPublicKey; using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(pemPublicKeyStr))) { using (var sr = new StreamReader(ms)) { var pemReader = new Org.BouncyCastle.OpenSsl.PemReader(sr); pemPublicKey = (RsaKeyParameters)pemReader.ReadObject(); } } var p = new RSAParameters { Modulus = pemPublicKey.Modulus.ToByteArrayUnsigned(), Exponent = pemPublicKey.Exponent.ToByteArrayUnsigned() }; string xmlPublicKeyStr; using (var rsa = new RSACryptoServiceProvider()) { rsa.ImportParameters(p); xmlPublicKeyStr = rsa.ToXmlString(false); } return xmlPublicKeyStr; } /// <summary> /// XML私钥转成PEM私钥 /// </summary> /// <param name="xmlPrivateKey"></param> /// <returns></returns> public static string XmlPrivateKeyToPem(string xmlPrivateKey) { RSAParameters rsaParam; using (RSACryptoServiceProvider rsa = new RSACryptoServiceProvider()) { rsa.FromXmlString(xmlPrivateKey); rsaParam = rsa.ExportParameters(true); } var param = new RsaPrivateCrtKeyParameters( new BigInteger(1, rsaParam.Modulus), new BigInteger(1, rsaParam.Exponent), new BigInteger(1, rsaParam.D), new BigInteger(1, rsaParam.P), new BigInteger(1, rsaParam.Q), new BigInteger(1, rsaParam.DP), new BigInteger(1, rsaParam.DQ), new BigInteger(1, rsaParam.InverseQ)); string pemPrivateKeyStr = null; using (var ms = new MemoryStream()) { using (var sw = new StreamWriter(ms)) { var pemWriter = new Org.BouncyCastle.OpenSsl.PemWriter(sw); pemWriter.WriteObject(param); sw.Flush(); byte[] buffer = new byte[ms.Length]; ms.Position = 0; ms.Read(buffer, 0, (int)ms.Length); pemPrivateKeyStr = Encoding.UTF8.GetString(buffer); } } return pemPrivateKeyStr; } /// <summary> /// Pem私钥转成XML私钥 /// </summary> /// <param name="pemPrivateKeyStr"></param> /// <returns></returns> public static string PemPrivateKeyToXml(string pemPrivateKeyStr) { RsaPrivateCrtKeyParameters pemPrivateKey; using (var ms = new MemoryStream(Encoding.UTF8.GetBytes(pemPrivateKeyStr))) { using (var sr = new StreamReader(ms)) { var pemReader = new Org.BouncyCastle.OpenSsl.PemReader(sr); var keyPair = (AsymmetricCipherKeyPair)pemReader.ReadObject(); pemPrivateKey = (RsaPrivateCrtKeyParameters)keyPair.Private; } } var p = new RSAParameters { Modulus = pemPrivateKey.Modulus.ToByteArrayUnsigned(), Exponent = pemPrivateKey.PublicExponent.ToByteArrayUnsigned(), D = pemPrivateKey.Exponent.ToByteArrayUnsigned(), P = pemPrivateKey.P.ToByteArrayUnsigned(), Q = pemPrivateKey.Q.ToByteArrayUnsigned(), DP = pemPrivateKey.DP.ToByteArrayUnsigned(), DQ = pemPrivateKey.DQ.ToByteArrayUnsigned(), InverseQ = pemPrivateKey.QInv.ToByteArrayUnsigned(), }; string xmlPrivateKeyStr; using (var rsa = new RSACryptoServiceProvider()) { rsa.ImportParameters(p); xmlPrivateKeyStr = rsa.ToXmlString(true); } return xmlPrivateKeyStr; } }
Test
string privateKey = @"<RSAKeyValue><Modulus>yraVpjSjZtR0n44cUhZanc2T7FznFi/NyjtSG1WlghJr0zelQeciBQk0Cm+fO8rAh/5s+pHRk7UEOrQ9CJEClbxgR/w3zavSo7rF2TT5wC/fHL3083mpZU6540n6afl5IvrSGuXimK3RrM20mBotwXurFVnYDx3nAOK2UDo6H8E=</Modulus><Exponent>AQAB</Exponent><P>z3mjaVsCC4m7NU8ejEdsPJTdoWhAXiRBwoRH+rYYywOn+3xUKdy+gfJM92m7taTQVJXOKktEISVOpOWVkkxKdw==</P><Q>+h/UpRfKNsMf24TRQwQT1807iBeZw95GXiiUZB9PVLN+4n9hcovPndwhgRLSVK3jfkKDsf/TocGcGUIy82O9hw==</Q><DP>oHxQwQAatt4VJ4lJ8eyVds8YGPBRSgD1tQcpvm75AqCTYd6sI62S12Wbz43EGx+f3q36SZDq5FC9YqQMbJwCxQ==</DP><DQ>PkNSMc6cPcmQ0ppbZS1Mqzmhih0l38YjCilb1xicLN+JxGQlI9h91DQJ+xFuXjnzGWkBU3v1eJyzeO4rtL6tXQ==</DQ><InverseQ>jGlm3ypBpIN0l5ys+HSjTYC/UIYPEm745+WXtczcVDtyYcASsjUETE/8yUhA8m349aan04HDtfsEAVZNeB/Z1Q==</InverseQ><D>qjICEzm+t2dJQ20deg4qprMjrx+RJZ+dOF314d1WyI6O2RevOFXGylOfzeNJ3fmtDIEhHn+vZkRk+KS7WaXmdDExmwIWlcjy+jc1VLB6THjHzWmnp09gWfOAHH7w40zhAbt0hjXasWHqdzs1gb0uPZmw21FeOY+90tl+kZGTH8E=</D></RSAKeyValue>"; string publicKey = @"<RSAKeyValue><Modulus>yraVpjSjZtR0n44cUhZanc2T7FznFi/NyjtSG1WlghJr0zelQeciBQk0Cm+fO8rAh/5s+pHRk7UEOrQ9CJEClbxgR/w3zavSo7rF2TT5wC/fHL3083mpZU6540n6afl5IvrSGuXimK3RrM20mBotwXurFVnYDx3nAOK2UDo6H8E=</Modulus><Exponent>AQAB</Exponent></RSAKeyValue>"; //生成秘钥对 RSAHelper.Generator(out privateKey, out publicKey, 512); //需要加密的内容 var content = "323"; //密文 var enContent = RSAHelper.RSAEncryption(content, publicKey); //解密内容 var desContent = RSAHelper.RSADecrypt(enContent, privateKey); //签名，用是私钥 var sign = RSAHelper.GenSign(enContent, privateKey); //验证签名 var bbb = RSAHelper.VerifySigned(enContent, sign, publicKey); var privateKeyToPem = RSAHelper.XmlPrivateKeyToPem(privateKey); var publicKeyToPem = RSAHelper.XmlPublicKeyToPem(publicKey); var privateKeyToXml = RSAHelper.PemPrivateKeyToXml(privateKeyToPem); var publicKeyToXml = RSAHelper.PemPublicKeyToXml(publicKeyToPem);
直接使用
