public static bool RSACheckContent(string signContent, string sign, string publicKeyPem, string charset, string signType, bool keyFromFile)
{
try
{
byte[] dataBytes;
if (string.IsNullOrEmpty(charset))
{
dataBytes = Encoding.UTF8.GetBytes(signContent);
}
else
{
dataBytes = Encoding.GetEncoding(charset).GetBytes(signContent);
}
var rsa = RSAUtil.CreateRsaFromPublicKey(publicKeyPem);
//var cipherBytes = System.Convert.FromBase64String(signContent);
//var plainTextBytes = rsa.Decrypt(cipherBytes, RSAEncryptionPadding.Pkcs1);
if ("RSA2".Equals(signType))
{
return(rsa.VerifyData(dataBytes, Convert.FromBase64String(sign), HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1));
}
else
{
return(rsa.VerifyData(dataBytes, Convert.FromBase64String(sign), HashAlgorithmName.SHA1, RSASignaturePadding.Pkcs1));
}
}
catch
{
return(false);
}
}
public static string RSASignCharSet(string data, string privateKeyPem, string charset, string signType)
{
RSA rsa = RSAUtil.CreateRsaFromPrivateKey(privateKeyPem);
byte[] dataBytes = null;
if (string.IsNullOrEmpty(charset))
{
dataBytes = Encoding.UTF8.GetBytes(data);
}
else
{
dataBytes = Encoding.GetEncoding(charset).GetBytes(data);
}
var cipherBytes = rsa.Encrypt(dataBytes, RSAEncryptionPadding.Pkcs1);
if ("RSA2".Equals(signType))
{
cipherBytes = rsa.SignData(dataBytes, HashAlgorithmName.SHA256, RSASignaturePadding.Pkcs1);
}
else
{
cipherBytes = rsa.SignData(dataBytes, HashAlgorithmName.SHA1, RSASignaturePadding.Pkcs1);
}
return(Convert.ToBase64String(cipherBytes));
}