Issue 13710: hash() on strings containing only null characters returns the length of the strings (original) (raw)
Issue13710
Created on 2012-01-04 04:58 by Ramchandra Apte, last changed 2022-04-11 14:57 by admin. This issue is now closed.
| Messages (3) | ||
|---|---|---|
| msg150587 - (view) | Author: Ramchandra Apte (Ramchandra Apte) * | Date: 2012-01-04 04:58 |
| If you run hash on strings containing only null characters it returns the length of the string >>> hash("\0") 1 >>> hash("\0\0") 2 >>> hash("\0"*1000) 1000 This behaviour is not like proper hash functions. The hashes of these strings should exhibit the avalanche effect like in a proper hash function. | ||
| msg150588 - (view) | Author: Benjamin Peterson (benjamin.peterson) *  |
Date: 2012-01-04 05:05 |
| No. Python's dictionary implementation is designed to handle hash functions with the properties of Python's. | ||
| msg150590 - (view) | Author: Jesús Cea Avión (jcea) * |
Date: 2012-01-04 05:14 |
| Object hashes are not crypto hashes. Use hashlib module for crypto. |
| History | |||
|---|---|---|---|
| Date | User | Action | Args |
| 2022-04-11 14:57:25 | admin | set | github: 57919 |
| 2012-01-04 05:14:51 | jcea | set | nosy: + jceamessages: + |
| 2012-01-04 05:05:24 | benjamin.peterson | set | status: open -> closednosy: + benjamin.petersonmessages: + resolution: rejected |
| 2012-01-04 05:02:10 | Ramchandra Apte | set | title: hash() on string containing only null characters returns the length of the strings -> hash() on strings containing only null characters returns the length of the strings |
| 2012-01-04 05:01:49 | Ramchandra Apte | set | title: hash() on string containing only null characters returns the length of the string -> hash() on string containing only null characters returns the length of the strings |
| 2012-01-04 04:58:50 | Ramchandra Apte | create |