/// <summary>
/// 验证RSA签名
/// </summary>
/// <param name="data">需要验证的数据</param>
/// <param name="publicKey">RSA公钥</param>
/// <param name="charset">编码格式</param>
/// <param name="sign">需要验证的签名</param>
/// <param name="algorithm">加密算法</param>
/// <returns>验证是否成功</returns>
public static bool Verify(string data, string publicKey, string charset, string sign, string algorithm)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
//导入公钥，因为公钥是JAVA生成的，需要转换为.NET的格式
rsa.FromXmlString(RSAConverter.RSAPublicKeyJava2DotNet(publicKey));
byte[] dataByte = Encoding.GetEncoding(charset).GetBytes(data);
if (algorithm.ToUpper().Equals("RSA"))
{
SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
return(rsa.VerifyData(dataByte, sha1, Convert.FromBase64String(sign)));
}
else if (algorithm.ToUpper().Equals("RSA2"))
{
return(rsa.VerifyData(dataByte, "SHA256", Convert.FromBase64String(sign)));
}
return(false);
}
/// <summary>
/// RSA签名
/// </summary>
/// <param name="privateKey">私钥</param>
/// <param name="content">密文</param>
/// <returns></returns>
public static string Sign(string data, string privareKey, string charset, string algorithm)
{
RSACryptoServiceProvider rsa = new RSACryptoServiceProvider();
//导入私钥
rsa.FromXmlString(RSAConverter.RSAPrivateKeyJava2DotNet(privareKey));
byte[] dataByte = Encoding.GetEncoding(charset).GetBytes(data);
if (algorithm.ToUpper().Equals("RSA"))
{
SHA1CryptoServiceProvider sha1 = new SHA1CryptoServiceProvider();
return(Convert.ToBase64String(rsa.SignData(dataByte, sha1)));
}
else if (algorithm.ToUpper().Equals("RSA2"))
{
return(Convert.ToBase64String(rsa.SignData(dataByte, "SHA256")));
}
return(string.Empty);
}
