/// <summary>
/// RSA签名
/// </summary>
/// <param name="rsaType"></param>
/// <param name="privateKey"></param>
/// <param name="data"></param>
/// <param name="dataEncoding"></param>
/// <returns></returns>
public static string RsaSign(ERsaType rsaType, string privateKey, string data, Encoding dataEncoding)
{
byte[] dataBytes = dataEncoding.GetBytes(data);
var algorithm = rsaType == ERsaType.RSA ? HashAlgorithmName.SHA1 : HashAlgorithmName.SHA256;
var rsa = CreateRsaFromPrivateKey(privateKey);
if (rsa == null)
{
return(null);
}
var signBytes = rsa.SignData(dataBytes, algorithm, RSASignaturePadding.Pkcs1);
return(Convert.ToBase64String(signBytes));
}
/// <summary>
/// RSA验证签名
/// </summary>
/// <param name="rsaType"></param>
/// <param name="publicKey"></param>
/// <param name="data"></param>
/// <param name="dataEncoding"></param>
/// <param name="sign"></param>
/// <returns></returns>
public static bool RsaVerify(ERsaType rsaType, string publicKey, string data, Encoding dataEncoding, string sign)
{
byte[] dataBytes = dataEncoding.GetBytes(data);
byte[] signBytes = Convert.FromBase64String(sign);
var algorithm = rsaType == ERsaType.RSA ? HashAlgorithmName.SHA1 : HashAlgorithmName.SHA256;
var rsa = CreateRsaFromPublicKey(publicKey);
if (rsa == null)
{
return(false);
}
var verify = rsa.VerifyData(dataBytes, signBytes, algorithm, RSASignaturePadding.Pkcs1);
return(verify);
}
