public GSTNResult <OTPResponseModel> RequestOTP()
{
OTPRequestModel model = new OTPRequestModel {
action = "OTPREQUEST",
username = userid,
app_key = EncryptionUtils.RsaEncrypt(GSTNConstants.GetAppKeyBytes())
};
var output = this.Post <OTPRequestModel, OTPResponseModel>(model);
return(output);
}
protected internal UnsignedDataInfo Encrypt <T>(T input)
{
UnsignedDataInfo info = new UnsignedDataInfo();
if (input != null)
{
string finalJson = JsonConvert.SerializeObject(input);
byte[] encodeJson = Encoding.UTF8.GetBytes(finalJson);
string json = Convert.ToBase64String(encodeJson);
byte[] jsonData = Encoding.UTF8.GetBytes(json);
info.data = EncryptionUtils.AesEncrypt(jsonData, provider.DecryptedKey);
info.hMAC = EncryptionUtils.GenerateHMAC(json, provider.DecryptedKey);
}
return(info);
}
protected internal T Decrypt <T>(ResponseDataInfo output)
{
T model = default(T);
if (output != null)
{
byte[] decryptREK = EncryptionUtils.AesDecrypt(output.rek, provider.DecryptedKey);
byte[] jsonData = EncryptionUtils.AesDecrypt(output.data, decryptREK);
string json = Encoding.UTF8.GetString(jsonData);
byte[] decodeJson = Convert.FromBase64String(json);
string finalJson = Encoding.UTF8.GetString(decodeJson);
model = Newtonsoft.Json.JsonConvert.DeserializeObject <T>(finalJson);
LastJson = finalJson;
}
return(model);
}
protected internal T Decrypt <T>(ResponseDataInfo output)
{
T model = default(T);
if (output != null)
{
byte[] decryptREK = EncryptionUtils.AesDecrypt(output.rek, provider.DecryptedKey);
byte[] jsonData = EncryptionUtils.AesDecrypt(output.data, decryptREK);
string testHmac = EncryptionUtils.GenerateHMAC(jsonData, decryptREK);
System.Console.WriteLine("HMAC Match:" + (output.hmac == testHmac));
string base64Payload = UTF8Encoding.UTF8.GetString(jsonData);
byte[] decodeJson = Convert.FromBase64String(base64Payload);
string finalJson = Encoding.UTF8.GetString(decodeJson);
model = Newtonsoft.Json.JsonConvert.DeserializeObject <T>(finalJson);
LastJson = finalJson;
}
return(model);
}
public GSTNResult <TokenResponseModel> RefreshToken()
{
RefreshTokenModel model = new RefreshTokenModel
{
action = "REFRESHTOKEN",
username = userid
};
model.app_key = EncryptionUtils.AesEncrypt(GSTNConstants.GetAppKeyBytes(), this.DecryptedKey);
model.auth_token = this.AuthToken;
var output = this.Post <RefreshTokenModel, TokenResponseModel>(model);
token = output.Data;
this.AuthToken = token.auth_token;
this.DecryptedKey = EncryptionUtils.AesDecrypt(token.sek, GSTNConstants.GetAppKeyBytes());
var Decipher = System.Text.Encoding.UTF8.GetString(DecryptedKey);
return(output);
}
public GSTNResult <TokenResponseModel> RequestToken(string username, string otp)
{
TokenRequestModel model = new TokenRequestModel {
action = "AUTHTOKEN",
username = username
};
model.app_key = EncryptionUtils.RsaEncrypt(GSTNConstants.GetAppKeyBytes());
model.otp = EncryptionUtils.AesEncrypt(otp, GSTNConstants.GetAppKeyBytes());
var output = this.Post <TokenRequestModel, TokenResponseModel>(model);
this.username = username;
token = output.Data;
this.AuthToken = token.auth_token;
this.DecryptedKey = EncryptionUtils.AesDecrypt(token.sek, GSTNConstants.GetAppKeyBytes());
var Decipher = System.Text.Encoding.UTF8.GetString(DecryptedKey);
return(output);
}
protected internal UnsignedDataInfo Encrypt <T>(T input)
{
UnsignedDataInfo info = new UnsignedDataInfo();
if (input != null)
{
string finalJson = JsonConvert.SerializeObject(input, Newtonsoft.Json.Formatting.Indented,
new JsonSerializerSettings
{
NullValueHandling = NullValueHandling.Ignore
});
byte[] encodeJson = UTF8Encoding.UTF8.GetBytes(finalJson);
string base64Payload = Convert.ToBase64String(encodeJson);
byte[] jsonData = UTF8Encoding.UTF8.GetBytes(base64Payload);
info.data = EncryptionUtils.AesEncrypt(jsonData, provider.DecryptedKey);
info.hmac = EncryptionUtils.GenerateHMAC(jsonData, provider.DecryptedKey);
}
return(info);
}
public static string AesEncrypt(string plainText, string key)
{
byte[] data = UTF8Encoding.UTF8.GetBytes(plainText);
byte[] keyBytes = Encoding.UTF8.GetBytes(key);
return(EncryptionUtils.AesEncrypt(data, keyBytes));
}
