public void Add(string username, string password, string hashAlgorithm)
{
string hashPassword = null;
if (hashAlgorithm.ToUpper().Equals("MD5"))
{
hashPassword = Hashing.EncodeMD5(password);
}
else if (hashAlgorithm.ToUpper().Equals("SHA1"))
{
hashPassword = Hashing.EncodeSHA1(password);
}
else if (hashAlgorithm.ToUpper().Equals("SHA256"))
{
hashPassword = Hashing.EncodeSHA256(password);
}
using (RainbowContext ctx = new RainbowContext())
{
User user = new User()
{
Username = username,
HashedPassword = hashPassword
};
ctx.Users.Add(user);
ctx.SaveChanges();
}
}
public string GetPassword(string username)
{
var watch = System.Diagnostics.Stopwatch.StartNew();
string rawPassword = null;
using (RainbowContext ctx = new RainbowContext())
{
string hashedPassword = ctx.Users.Where(u => u.Username.Equals(username)).FirstOrDefault().HashedPassword;
rawPassword = ctx.RainbowItems
.Where(item => item.Md5Hash.Equals(hashedPassword) || item.Sha1Hash.Equals(hashedPassword) || item.Sha256Hash.Equals(hashedPassword))
.FirstOrDefault().Password;
}
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine("Find password in {0} ms", elapsedMs);
return(rawPassword);
}
public Repository()
{
List <RainbowItem> rainbowItems = new List <RainbowItem>();
List <string> permutations = Permutation.getPermutations(2);
foreach (string p in permutations)
{
rainbowItems.Add(
new RainbowItem()
{
Password = p,
Md5Hash = Hashing.EncodeMD5(p),
Sha1Hash = Hashing.EncodeSHA1(p),
Sha256Hash = Hashing.EncodeSHA256(p)
}
);
}
//v1
/*
* For each item it uses an insert
* Add the items in on implicit transaction
*/
var watch = System.Diagnostics.Stopwatch.StartNew();
using (RainbowContext ctx = new RainbowContext())
{
//ctx.Database.Log = Console.Write;
ctx.RainbowItems.AddRange(rainbowItems);
ctx.SaveChanges();
}
watch.Stop();
var elapsedMs = watch.ElapsedMilliseconds;
Console.WriteLine("Populate table in {0} ms", elapsedMs);
//v2
/*
* For each item it uses an insert
* Add the items in on explicit transaction
*/
/*
* var watch = System.Diagnostics.Stopwatch.StartNew();
* using (RainbowContext ctx = new RainbowContext())
* {
* //ctx.Database.Log = Console.Write;
* using (var dbContextTransaction = ctx.Database.BeginTransaction())
* {
* try
* {
*
* ctx.RainbowItems.AddRange(rainbowItems);
* ctx.SaveChanges();
* dbContextTransaction.Commit();
* }catch(Exception e)
* {
* dbContextTransaction.Rollback();
* }
*
* }
*
* }
* watch.Stop();
* var elapsedMs = watch.ElapsedMilliseconds;
* Console.WriteLine("Populate table in {0} ms", elapsedMs);
*/
}
