/**
* Get an encrypted pseudonym for a user from the database.
* @param user the User ID to get a encrypted pseudonym for.
* @param sp the SP ID to get a encrypted pseudonym for.
* @return The encrypted pseudonym for the specified user and SP, or null if no encrypted pseudonym was found in the database.
*/
public Pseudonym GetEncrypted(string user, string sp)
{
var pseudonyms = from ep in db.EncryptedPseudonyms
where ep.user == user && ep.sp == sp
select Pseudonym.Decode(ep.pseudonym);
return(pseudonyms.FirstOrDefault());
}
/**
* Get a polymorphic pseudonym for a user from the database.
* @param user the User ID to get a polymorphic pseudonym for.
* @return The polymorphic pseudonym for the specified user, or null if no polymorphic pseudonym was found in the database.
*/
public Pseudonym GetPolymorphic(string user)
{
var pseudonyms = from p in db.PolymorphicPseudonyms
where p.user == user
select Pseudonym.Decode(p.pseudonym);
return(pseudonyms.FirstOrDefault());
}
/**
* Get an encrypted pseudonym asynchronously.
* @param pp The polymorphic pseudonym to get an encrypted pseudonym for.
* @param sp The SP ID to get an encrypted pseudonym for.
* @return A task that will result in the Encrypted Pseudonym.
*/
public async Task <Pseudonym> GetEPAsync(Pseudonym pp, string sp)
{
HttpClient client = new HttpClient();
HttpResponseMessage message = await client.GetAsync(string.Format(url,
WebUtility.UrlEncode(pp.Encode()), WebUtility.UrlEncode(sp)));
string epString = await message.Content.ReadAsStringAsync();
return(Pseudonym.Decode(epString));
}
/**
* Execute the <code>randomize</code> query
* @return 2D array <code>result</code> with <code>result[0][0]</code> being the encoded randomized pseudonym.
*/
public string[][] Randomize()
{
string[] oneResult = new string[1];
Pseudonym pseudonym = Pseudonym.Decode(parameters[0]);
pseudonym = pseudonym.Randomize();
oneResult[0] = pseudonym.Encode();
return(new string[][] { oneResult });
}