C#中通過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,總之讀取證書中信息無非是轉換方式問題

///

/// c# 使用 java 的公鑰進行rsa加密 utf8編碼 通過解析公鑰加密數據

///

///

///

public static string RSAEncrypts(string content)

{

RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();

byte[] cipherbytes;

X509Certificate2 x509Certificate2 = new X509Certificate2("D:\\Config\\dsptest.cer");

//創建并返回當前算法對象的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);

}

///

/// 私鑰解密 通過解析私鑰來解析數據 X509KeyStorageFlags.Exportable這個屬性很關鍵是獲取私鑰信息的

///

///

///

///

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);

//創建并返回當前算法對象的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提供的公私鑰轉成.net公私鑰XML的方式*************************************/

///

/// RSA公鑰格式轉換，java->.net

///

/// java生成的公鑰

///

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私鑰格式轉換，java->.net

///

/// java生成的RSA私鑰

///

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()));

}

以上實例大家可以測試下，感謝大家對腳本之家的支持。

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