public static void testRsaKeyConvert()
{
string publicKeySC8 = @"-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQC1f0xSc8UyzldsIA2v9OHNfKGw
tRzt7oOfMyXplPqQQopcq92YVEoSs0FXhlRDMDpPgc603TDmg2h7OId3VrNu98S +
TDdX0fl57EamcmSlxX5yNvqq + KKhCg7 / I9Wj0DaGRi3lHS2W2s7r9d / k3eeB7hej
sZ9s1YoGEp5iRLfoRwIDAQAB
---- - END PUBLIC KEY-----";
string privateKeySC8 = @"-----BEGIN PRIVATE KEY-----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-----END PRIVATE KEY-----";
string privateKeySC1 = RsaKeyConvert.PrivateKeyPkcs8ToPkcs1(privateKeySC8);
Console.WriteLine(privateKeySC1);
}
/**
* 私钥解密,需注意的是这里的PEM 私钥文件是PKCS1格式，而Java中的是PKCS8格式
*/
public static string DecryptWithPrivate(string base64Input, string privateKey)
{
string priXml = RsaKeyConvert.PrivateKeyPkcs1ToXml(privateKey);
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
byte[] cipherbytes;
rsa.FromXmlString(priXml);
cipherbytes = rsa.Decrypt(Convert.FromBase64String(base64Input), false);
return(Encoding.UTF8.GetString(cipherbytes));
}
/// <summary>
/// 用私钥给数据进行RSA加密
/// </summary>
/// <param name="xmlPrivateKey"> 私钥(XML格式字符串)</param>
/// <param name="strEncryptString"> 要加密的数据 </param>
/// <returns> 加密后的数据 </returns>
public static string EncryptWithPrivate(string strEncryptString, string privateKey)
{
string priXml = RsaKeyConvert.PrivateKeyPkcs1ToXml(privateKey);
//加载私钥
RSACryptoServiceProvider privateRsa = new RSACryptoServiceProvider();
privateRsa.FromXmlString(priXml);
//转换密钥
AsymmetricCipherKeyPair keyPair = DotNetUtilities.GetKeyPair(privateRsa);
IBufferedCipher c = CipherUtilities.GetCipher("RSA/ECB/PKCS1Padding"); //使用RSA/ECB/PKCS1Padding格式
//第一个参数为true表示加密，为false表示解密；第二个参数表示密钥
c.Init(true, keyPair.Private);
byte[] DataToEncrypt = Encoding.UTF8.GetBytes(strEncryptString);
byte[] outBytes = c.DoFinal(DataToEncrypt);//加密
string strBase64 = Convert.ToBase64String(outBytes);
return(strBase64);
}