Is there a “fingerprinting algorithm” devoid of any collisions?
I'm looking for a "fingerprinting algorithm" that is truly devoid of any probability of collision*. The "Rabin's algorithm", for example, is a very good scheme for being fast and easy to implement; but yet, it does have a "negligible" probability of a collision!
Please shed some lights on this.
* Collision: Two inputs yielding the same fingerprint
algorithm
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
add a comment |
I'm looking for a "fingerprinting algorithm" that is truly devoid of any probability of collision*. The "Rabin's algorithm", for example, is a very good scheme for being fast and easy to implement; but yet, it does have a "negligible" probability of a collision!
Please shed some lights on this.
* Collision: Two inputs yielding the same fingerprint
algorithm
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
3
No, not in general. A fingerprint is (generally) smaller than the object from which it is generated, therefore it is impossible to have a different fingerprint for every possible input. Read about hash functions and hash collisions for more information.
– jdehesa
Nov 14 '18 at 16:30
add a comment |
I'm looking for a "fingerprinting algorithm" that is truly devoid of any probability of collision*. The "Rabin's algorithm", for example, is a very good scheme for being fast and easy to implement; but yet, it does have a "negligible" probability of a collision!
Please shed some lights on this.
* Collision: Two inputs yielding the same fingerprint
algorithm
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
I'm looking for a "fingerprinting algorithm" that is truly devoid of any probability of collision*. The "Rabin's algorithm", for example, is a very good scheme for being fast and easy to implement; but yet, it does have a "negligible" probability of a collision!
Please shed some lights on this.
* Collision: Two inputs yielding the same fingerprint
algorithm
algorithm
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
asked Nov 14 '18 at 16:13
goodUsergoodUser
7817
7817
3
No, not in general. A fingerprint is (generally) smaller than the object from which it is generated, therefore it is impossible to have a different fingerprint for every possible input. Read about hash functions and hash collisions for more information.
– jdehesa
Nov 14 '18 at 16:30
add a comment |
3
No, not in general. A fingerprint is (generally) smaller than the object from which it is generated, therefore it is impossible to have a different fingerprint for every possible input. Read about hash functions and hash collisions for more information.
– jdehesa
Nov 14 '18 at 16:30
3
3
No, not in general. A fingerprint is (generally) smaller than the object from which it is generated, therefore it is impossible to have a different fingerprint for every possible input. Read about hash functions and hash collisions for more information.
– jdehesa
Nov 14 '18 at 16:30
No, not in general. A fingerprint is (generally) smaller than the object from which it is generated, therefore it is impossible to have a different fingerprint for every possible input. Read about hash functions and hash collisions for more information.
– jdehesa
Nov 14 '18 at 16:30
add a comment |
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No, not in general. A fingerprint is (generally) smaller than the object from which it is generated, therefore it is impossible to have a different fingerprint for every possible input. Read about hash functions and hash collisions for more information.
– jdehesa
Nov 14 '18 at 16:30