protected internal T Decrypt <T>(string data, string ek, string hmac, ErrorDetails error)
{
T model = default(T);
if (String.IsNullOrEmpty(data))
{
if (error != null)
{
dicParams.Add("ResponseError", error.message);
}
}
else
{
try
{
byte[] decryptREK = EncryptionUtils.AesDecrypt(ek, provider.DecryptedKey);
byte[] jsonData = EncryptionUtils.AesDecrypt(data, decryptREK);
if (!String.IsNullOrEmpty(hmac))
{
string testHmac = EncryptionUtils.GenerateHMAC(jsonData, decryptREK);
this.LogMessage("HMAC Match:" + (hmac == testHmac));
}
string base64Payload = UTF8Encoding.UTF8.GetString(jsonData);
byte[] decodeJson = Convert.FromBase64String(base64Payload);
string finalJson = Encoding.UTF8.GetString(decodeJson);
dicParams["ResponsePayload"] = finalJson;
model = Newtonsoft.Json.JsonConvert.DeserializeObject <T>(finalJson);
}
catch (Exception ex)
{
dicParams.Add("ResponseError", ex.Message);
}
}
return(model);
}
protected internal UnsignedDataInfo EncryptBase64(string base64Payload)
{
UnsignedDataInfo info = new UnsignedDataInfo();
byte[] jsonData = UTF8Encoding.UTF8.GetBytes(base64Payload);
info.data = EncryptionUtils.AesEncrypt(jsonData, provider.DecryptedKey);
info.hmac = EncryptionUtils.GenerateHMAC(jsonData, 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 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);
}
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);
}