RSA加密与解密

1.RSA加密与解密–使用公钥加密、私钥解密

publicclassRSATool
{
publicstringEncrypt(stringstrText,stringstrPublicKey)
{
RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
rsa.FromXmlString(strPublicKey);
byte[]byteText=Encoding.UTF8.GetBytes(strText);
byte[]byteEntry=rsa.Encrypt(byteText,false);
returnConvert.ToBase64String(byteEntry);
}
publicstringDecrypt(stringstrEntryText,stringstrPrivateKey)
{
RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
rsa.FromXmlString(strPrivateKey);
byte[]byteEntry=Convert.FromBase64String(strEntryText);
byte[]byteText=rsa.Decrypt(byteEntry,false);
returnEncoding.UTF8.GetString(byteText);
}
publicDictionary<string,string>GetKey()
{
Dictionary<string,string>dictKey=newDictionary<string,string>();
RSACryptoServiceProviderrsa=newRSACryptoServiceProvider();
dictKey.Add(“PublicKey”,rsa.ToXmlString(false));
dictKey.Add(“PrivateKey”,rsa.ToXmlString(true));
returndictKey;
}
}
测试：
ViewCode

2.RSA加密与解密–使用同一个密钥容器进行加密与解密
publicclassRSAToolX
{
publicstringEncrypt(stringstrText)
{
CspParametersCSApars=newCspParameters();
CSApars.KeyContainerName=”Test001″;
RSACryptoServiceProviderrsa=newRSACryptoServiceProvider(CSApars);
byte[]byteText=Encoding.UTF8.GetBytes(strText);
byte[]byteEntry=rsa.Encrypt(byteText,false);
returnConvert.ToBase64String(byteEntry);
}
publicstringDecrypt(stringstrEntryText)
{
CspParametersCSApars=newCspParameters();
CSApars.KeyContainerName=”Test001″;
RSACryptoServiceProviderrsa=newRSACryptoServiceProvider(CSApars);
byte[]byteEntry=Convert.FromBase64String(strEntryText);
byte[]byteText=rsa.Decrypt(byteEntry,false);
returnEncoding.UTF8.GetString(byteText);
}
}