Add the parameter Q to md5 hash function

[drazioti]

#24 After the introduction of md5 hash in unordered map, we must add the parameter Q (where Q is the number of hex bytes we consider from the message digest).

[drazioti]

resolved in pull request #20

[drazioti]

bug in the implementation. In each round found the same collisions.

[etiganou]

Σε κάθε γύρω του αλγορίθμου δλδ για διαφορετικό I1, I2 ? Γιατί κανονικά αν πούμε για παράδειγμα 3 γινόμενα έχουν ίδιο hash μπαίνουν στο ίδιο vector. Τώρα για κάθε matching hash που δεν σχηματίζει carmichael θα βρίσκει αυτά τα 3 collisions και τα 3 κάθε φορά, αυτό είναι λογικό

[drazioti]

For every round (i.e. different choice of I1, I2) always we get the same hashes. For instance

Key: 55368ea18db56
In map: 55368ea18db56
Found a collision
Key: df254c25b2234
In map: df254c25b2234
Found a collision

Then in the next round, new I1,I2 we get the same
and this continues for every round.
Is this logical?

[etiganou]

Έχετε δίκιο κάτι πάει λάθος

[etiganou]

Πάντως για Q_bytes = 12 το έτρεξα μέχρι και για 40000 παράγοντες για 4-5 ώρες και δεν βρήκε καθόλου collisions

[drazioti]

this does not mean that is working properly. Needs more tests.

[drazioti]

The problem remains.

./a.out 15 13 10 5 1 1 1 1 --ham 17 -b 38 -f 1

...
Combination time: 30.056122 seconds
frag = 1
Time for func2 is: 97.724960 seconds
The first set U1, has been stored in memory
Hashtable size : 48903492

Key: 15d28e3b151d9
In map: 15d28e3b151d9	
Found a collision
Key: ca76c1e153b52
In map: ca76c1e153b52	
Found a collision

T set product attack finished 
Size of I is : 38
h1 = 8
h2 = 9
Hash Implementation: True
Combination time: 30.056122 seconds
frag = 1
Time for func2 is: 97.724960 seconds
The first set U1, has been stored in memory
Hashtable size : 48903492

Key: 15d28e3b151d9
In map: 15d28e3b151d9   
Found a collision
Key: ca76c1e153b52
In map: ca76c1e153b52   
Found a collision```

[drazioti]

related to #28 #26 #27