// returns true if password successfully changed
public static bool ChangePass(Users user, string oldPassword, string newPassword)
{
user.BytKey = ComputeSHA256Hash(oldPassword, user.BytSalt);
user.StrPassword = oldPassword;
if (VerifyUser(user))
{
InsertDAL insertDAL = new InsertDAL();
insertDAL.OpenConnection();
byte[] newKey;
try
{
newKey = ComputeSHA256Hash(newPassword, user.BytSalt);
} catch (ArgumentNullException)
{
return(false);
}
insertDAL.UpdateUserKey(user.IntUserID, newKey);
insertDAL.CloseConnection();
return(true);
}
return(false);
}
// returns true if new user is created successfully
public static bool CreateUser(Users newUser)
{
GetDAL getDAL = new GetDAL();
getDAL.OpenConnection();
Users usr = getDAL.GetUserByName(newUser.StrName);
// if no user found by username
if (usr == null)
{
// prompt for name, email, phone, eventID
// get email
string email = newUser.StrEmail;
if (!IsValidEmail(email))
{
return(false);
}
// get phone
string phone = newUser.StrPhone;
if (phone.Length != 10)
{
return(false);
}
InsertDAL insertDAL = new InsertDAL();
insertDAL.OpenConnection();
// generate random number for salt and convert it to a byte array for key
byte[] salt = BitConverter.GetBytes(new Random().Next());
byte[] key;
try
{
key = ComputeSHA256Hash(newUser.StrPassword, salt);
} catch (ArgumentNullException)
{
return(false);
}
int intNewUserID = insertDAL.InsertUser(new Users(newUser.StrName, salt, key, email, phone));
insertDAL.CloseConnection();
GetDAL get = new GetDAL();
get.OpenConnection();
Users completeUser = get.GetUserByID(intNewUserID);
get.CloseConnection();
return(LoginUser(completeUser));
}
getDAL.CloseConnection();
return(false);
}
