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這篇文章給大家介紹C#RSA對(duì)接JAVA中RSA方式代碼的示例分析,內(nèi)容非常詳細(xì),感興趣的小伙伴們可以參考借鑒,希望對(duì)大家能有所幫助。
C#中通過(guò)FromXmlString屬性加載的是XML形式,而JAVA中用到的是解析后的PEM格式的字符串,總之讀取證書(shū)中信息無(wú)非是轉(zhuǎn)換方式問(wèn)題
/// <summary> /// c# 使用 java 的公鑰進(jìn)行rsa加密 utf8編碼 通過(guò)解析公鑰加密數(shù)據(jù) /// </summary> /// <param name="publickey"></param> /// <returns></returns> public static string RSAEncrypts(string content) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); byte[] cipherbytes; X509Certificate2 x509Certificate2 = new X509Certificate2("D:\\Config\\dsptest.cer"); //創(chuàng)建并返回當(dāng)前算法對(duì)象的xml字符串表示形式 string publicKeyString = x509Certificate2.PublicKey.Key.ToXmlString(false); rsa.FromXmlString(publicKeyString); //rsa.FromXmlString(RSAPublicKeyJava2DotNet(publicKeyString)); cipherbytes = rsa.Encrypt(Encoding.UTF8.GetBytes(content), false); return Convert.ToBase64String(cipherbytes); } /// <summary> /// 私鑰解密 通過(guò)解析私鑰來(lái)解析數(shù)據(jù) X509KeyStorageFlags.Exportable這個(gè)屬性很關(guān)鍵是獲取私鑰信息的 /// </summary> /// <param name="privatekey"></param> /// <param name="content"></param> /// <returns></returns> public static string RSADecrypt( string content) { byte[] rgb = Convert.FromBase64String(content); RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); byte[] cipherbytes; X509Certificate2 x509Certificate2 = new X509Certificate2("D:\\Config\\test.pfx", "cfca1234", X509KeyStorageFlags.Exportable); //創(chuàng)建并返回當(dāng)前算法對(duì)象的xml字符串表示形式 //rsa.FromXmlString(RSAPrivateKeyJava2DotNet(Const.privatekey)); rsa.FromXmlString(x509Certificate2.PrivateKey.ToXmlString(true)); cipherbytes = rsa.Decrypt(Convert.FromBase64String(content), false); return Encoding.UTF8.GetString(cipherbytes); }
/***************以下是java提供的公私鑰轉(zhuǎn)成.net公私鑰XML的方式*************************************//// <summary> /// RSA公鑰格式轉(zhuǎn)換,java->.net/// </summary>/// <param name="publicKey">java生成的公鑰</param>/// <returns></returns>public static string RSAPublicKeyJava2DotNet(string publicKey){RsaKeyParameters publicKeyParam = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(publicKey));return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent></RSAKeyValue>",Convert.ToBase64String(publicKeyParam.Modulus.ToByteArrayUnsigned()),Convert.ToBase64String(publicKeyParam.Exponent.ToByteArrayUnsigned()));}/// <summary>/// RSA私鑰格式轉(zhuǎn)換,java->.net/// </summary>/// <param name="privateKey">java生成的RSA私鑰</param>/// <returns></returns>public static string RSAPrivateKeyJava2DotNet(string privateKey){ RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey));return string.Format("<RSAKeyValue><Modulus>{0}</Modulus><Exponent>{1}</Exponent><P>{2}</P><Q>{3}</Q><DP>{4}</DP><DQ>{5}</DQ><InverseQ>{6}</InverseQ><D>{7}</D></RSAKeyValue>",Convert.ToBase64String(privateKeyParam.Modulus.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.PublicExponent.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.P.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.Q.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.DP.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.DQ.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.QInv.ToByteArrayUnsigned()),Convert.ToBase64String(privateKeyParam.Exponent.ToByteArrayUnsigned()));}
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