public static string GenerateKey(string tid)
{
byte[] secret = DeriveSecret(-3, 10);
byte[] munged = MungeTid(tid.Replace(" ", ""));
byte[] hashed = GetHash(secret.Concat(munged).ToArray());
string pass = "******";
byte[] key;
using (var pbkdf2 = new Rfc2898DeriveBytes(pass, hashed, 20, HashAlgorithmName.SHA1))
{
key = pbkdf2.GetBytes(16);
}
byte[] commonKey = HexToByteArray(FormatHexString(commonKeyNoWhitespace));
// Initialization vector IV: https://en.wikipedia.org/wiki/Initialization_vector
byte[] iv = HexToByteArray(FormatHexString(tid));
Array.Resize(ref iv, 16);
var crypto = new AesCryptographyService();
var encrypted = crypto.Encrypt(key, commonKey, iv);
return(BitConverter.ToString(encrypted).Replace("-", "").ToUpper());
}
public async Task <bool> SignIn(string username, string password)
{
try
{
var endpoint = configuration.GetSection("Endpoints").GetSection("Identity").Value;
var encrypter = new AesCryptographyService();
using (var httpClient = new HttpClient())
{
httpClient.BaseAddress = new Uri(endpoint);
var content = Json.CreateJsonContent(new UserModel
{
Email = username,
Password = encrypter.Encrypt(password)
});
var response = await httpClient.PostAsync("/api/authentication/signin", content);
var result = await response.Content.ReadAsStringAsync();
response.EnsureSuccessStatusCode();
var model = Json.Deserialize <UserModel>(result);
memoryCache.CreateEntry(model.Email);
memoryCache.Set(model.Email, model, new MemoryCacheEntryOptions
{
SlidingExpiration = TimeSpan.FromMinutes(60)
});
return(true);
}
}
catch (Exception ex)
{
logger.LogError(ex, $"Unable to authenticate {username}");
return(false);
}
}
public virtual void Insert(TEntity entity)
{
var encrypt = _crypto.Encrypt(entity);
dbSet.Add(encrypt);
}