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()));

}

以上实例大家可以测试下，感谢大家对脚本之家的支持。