C#中通过FromXmlString属性加载的是XML形式,而JAVA中用到的是解析后的PEM格式的字符串,总之读取证书中信息无非是转换方式问题
/// /// c# 使用 java 的公钥进行rsa加密 utf8编码 通过解析公钥加密数据 /// /// /// public static string RSAEncrypts(string content) { RSACryptoServiceProvider rsa = new RSACryptoServiceProvider(); byte[] cipherbytes; X509Certificate2 x509Certificate2 = new X509Certificate2("D:\\Config\\dsptest.cer"); //创建并返回当前算法对象的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); } /// /// 私钥解密 通过解析私钥来解析数据 X509KeyStorageFlags.Exportable这个属性很关键是获取私钥信息的 /// /// /// /// 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); //创建并返回当前算法对象的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提供的公私钥转成.net公私钥XML的方式*************************************//// /// RSA公钥格式转换，java->.net/// /// java生成的公钥/// public static string RSAPublicKeyJava2DotNet(string publicKey){RsaKeyParameters publicKeyParam = (RsaKeyParameters)PublicKeyFactory.CreateKey(Convert.FromBase64String(publicKey));return string.Format("{0}{1}",Convert.ToBase64String(publicKeyParam.Modulus.ToByteArrayUnsigned()),Convert.ToBase64String(publicKeyParam.Exponent.ToByteArrayUnsigned()));}/// /// RSA私钥格式转换，java->.net/// /// java生成的RSA私钥/// public static string RSAPrivateKeyJava2DotNet(string privateKey){ RsaPrivateCrtKeyParameters privateKeyParam = (RsaPrivateCrtKeyParameters)PrivateKeyFactory.CreateKey(Convert.FromBase64String(privateKey));return string.Format("{0}{1}{2}
{3}
{4}{5}{6}{7}",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()));}
