hash-collision Questions
4
Solved
I've implemented a BloomFilter in python 3.3, and got different results every session. Drilling down this weird behavior got me to the internal hash() function - it returns different hash values fo...
Stative asked 17/12, 2014 at 9:48
12
Solved
For each of our binary assets we generate a MD5 hash. This is used to check whether a certain binary asset is already in our application. But is it possible that two different binary assets generat...
Laurynlausanne asked 18/11, 2009 at 13:36
4
Solved
For demonstration-purposes, what are a couple examples of strings that collide when hashed? MD5 is a relatively standard hashing-option, so this will be sufficient.
Abiotic asked 3/8, 2009 at 19:15
3
Solved
In order to solve this question, I have been playing around with a custom struct that implements the Hashable Protocol. I'm trying to see how many times the equivalency operator overload (==) gets ...
Almallah asked 28/7, 2015 at 1:3
1
Solved
Take this hash for example:
ba7816bf 8f01cfea 414140de 5dae2223 b00361a3 96177a9c b410ff61 f20015ad
It's too long for my purposes so I intend to use a small chunk from it, such as:
ba7816bf8f01...
Collaborationist asked 11/3, 2018 at 19:4
6
Solved
I want to know the probability of getting duplicate values when calling the GetHashCode() method on string instances. For instance, according to this blog post, blair and brainlessness have the sam...
Dasie asked 1/11, 2011 at 15:26
9
What would actually happen if I had a hash collision while using git?
E.g. I manage to commit two files with the same sha1 checksum,
would git notice it or corrupt one of the files?
Could git be ...
Eger asked 3/5, 2012 at 15:16
1
Solved
How to identify whether or not the keys in a std::unordered_map have experienced hash collisions?
That is, how to identify if any collision chaining is present?
Cissoid asked 10/9, 2017 at 6:15
4
Solved
Hash Collision or Hashing Collision in HashMap is not a new topic and I've come across several blogs and discussion boards explaining how to produce Hash Collision or how to avoid it in an ambiguou...
Quote asked 21/8, 2017 at 11:11
6
Solved
This probably never happened in the real-world yet, and may never happen, but let's consider this: say you have a git repository, make a commit, and get very very unlucky: one of the blobs ends up ...
Toreutic asked 22/2, 2012 at 9:42
4
Solved
TLDR
My custom structure implements the Hashable Protocol. However, when hash collisions occur while inserting keys in a Dictionary, they are not automatically handled. How do I overcome this prob...
Unapt asked 27/7, 2015 at 22:8
4
Solved
I have a Unicode / UTF-16 encoded path. the path delimiters is U+005C '\'.
The paths are null-terminated root relative windows file system paths, e.g. "\windows\system32\drivers\myDriver32.sys"
I ...
Circus asked 15/9, 2010 at 20:12
3
Solved
Which hashmap collision handling scheme is better when the load factor is close to 1 to ensure minimum memory wastage?
I personally think the answer is open addressing with linear probing, because...
Wellspoken asked 30/10, 2010 at 14:23
2
I define my class as:
final class Key<T extends Comparable<T>> {
private final T q;
private final T o;
public Key(T q1, T o1) {
q = q1;
o = o1;
}
@Override
public boolean equa...
Scrutiny asked 15/4, 2016 at 8:54
6
Solved
If counting from 1 to X, where X is the first number to have an md5 collision with a previous number, what number is X?
I want to know if I'm using md5 for serial numbers, how many units I can exp...
From asked 30/7, 2011 at 19:59
2
Solved
I have this formula:
index = (a * k) % M
which maps a number 'k', from an input set K of distinct numbers, into it's position in a hashtable. I was wondering how to write a non-brute force progr...
Smoke asked 9/8, 2015 at 16:34
2
I was reading about Java's approach to randomize hash keys here
Apparently the idea is to make sure that the lower bits are "random" to help the distribution but I am trying to understand this more...
Alb asked 4/6, 2015 at 18:34
2
Solved
If I have an index of URLs, and ID them by the first 8 characters of a SHA1 hash, what is the probability of two different URLs having identical IDs?
Springer asked 31/5, 2015 at 18:29
2
Solved
I have short Strings (less than 10 characters). I will convert it into int and use it as primary key. (I can't use String primary key because of small problems.) I know the hashcodes of Strings of ...
Britnibrito asked 12/9, 2014 at 1:5
5
Solved
Given two different messages, A and B (maybe 20-80 characters of text, if size matters at all), what is the probability that the MD5 digest of A is the same as the MD5 digest of B and the SHA1 dige...
Multifaceted asked 24/8, 2009 at 15:17
3
Solved
Clearly since SHA-1 hashing produces 40 characters each time, there is a finite number of possible hashes—does anyone know exactly how many?
Persuasion asked 10/9, 2011 at 16:0
1
Solved
I am developing a game where every thing in the game world is represented by an global unique identifier.
Those ids each measure 64 bits and are generated by hashing together the time of creation,...
Yarn asked 29/8, 2013 at 0:25
2
Solved
I have a code that uses a cyclic polynomial rolling hash (Buzhash) to compute hash values of n-grams of source code. If i use small hash values (7-8 bits) then there are some collisions i.e. differ...
Impeller asked 3/5, 2013 at 18:38
5
Solved
I'm hashing a large number of files, and to avoid hash collisions, I'm also storing a file's original size - that way, even if there's a hash collision, it's extremely unlikely that the file sizes ...
Dromedary asked 14/3, 2010 at 15:31
1
Solved
When using adler32() as a hash function, one should expect rare collisions.
We can do the exact math of collisions probability, but roughly speaking,
since it is a 32-bits hash function, there sh...
Plumcot asked 19/11, 2012 at 13:43
1 Next >
© 2022 - 2024 — McMap. All rights reserved.