public List <MessageModel> getMessages(string SenderReceptor)
{
using (var client = new HttpClient())
{
var searchedMessages = getAllUserMessages(SenderReceptor);
if (searchedMessages.GetType().ToString() == "System.String")
{
return(null);
}
var decipheredMessages = new List <MessageModel>();
var decipherMessage = new SDES();
var decompressFileMessage = new CompresssDecompressActions();
var getUser = new UsersLogic();
var receptor = SenderReceptor.Split('|');
if (receptor[1] == string.Empty)
{
return(searchedMessages);
}
if (receptor[0] == LoggedUser)
{//es un mensaje que yo envié
var a = getUser.getUserByUsername(receptor[1]).PrivateKey;
foreach (var message in searchedMessages)
{
var key = BigInteger.ModPow((int)message.PublicKey, a, p);
var commonKey = Convert.ToString((int)key, 2);
message.Message = message.Message != string.Empty ? decipherMessage.DecipherText(message.Message, commonKey) : string.Empty;
decipheredMessages.Add(message);
}
}
else
{//es un mensaje recibido
foreach (var message in searchedMessages)
{
var key = BigInteger.ModPow((int)message.PublicKey, UserPrivateKey, p);
var commonKey = Convert.ToString((int)key, 2);
message.Message = message.Message != string.Empty ? decipherMessage.DecipherText(message.Message, commonKey) : string.Empty;
decipheredMessages.Add(message);
}
}
return(searchedMessages);
}
}
public List <MessageModel> MessageThatContainsSearch(string valueToLookFor)
{
var loggedUser = LoggedUser;
var messagesThatContains = getAllUserMessages(loggedUser);
if (messagesThatContains.GetType().ToString() == "System.String")
{
return(null);
}
if (messagesThatContains != null)
{
var resultOfTask = new List <MessageModel>();
var decipherMessage = new SDES();
var decompressFileMessage = new CompresssDecompressActions();
var getUser = new UsersLogic();
foreach (var item in messagesThatContains)
{
var receptor = item.SenderReceptor.Split('|');
if (receptor[0] == LoggedUser)
{//es un mensaje que yo envié
var a = getUser.getUserByUsername(receptor[1]).PrivateKey;
var key = BigInteger.ModPow((int)item.PublicKey, a, p);
var commonKey = Convert.ToString((int)key, 2);
item.Message = item.Message != string.Empty ? decipherMessage.DecipherText(item.Message, commonKey) : string.Empty;
resultOfTask.Add(item);
}
else
{//es un mensaje recibido
var key = BigInteger.ModPow((int)item.PublicKey, UserPrivateKey, p);
var commonKey = Convert.ToString((int)key, 2);
item.Message = item.Message != string.Empty ? decipherMessage.DecipherText(item.Message, commonKey) : string.Empty;
resultOfTask.Add(item);
}
}
return(resultOfTask.FindAll(messages => messages.Message.Contains(valueToLookFor)));
}
else
{
return(null);
}
}