Timeline for DES f function injective for no fixed subkey?
Current License: CC BY-SA 4.0
6 events
| when toggle format | what | by | license | comment | |
|---|---|---|---|---|---|
| Jun 14, 2020 at 23:33 | comment | added | fgrieu♦ | I'm convinced we know a bit more about DES, literally! Since that was the first correct answer, it gets the first bounty. It also gets the second one, since a hand-checkable valid proof has remained elusive within the bounty+grace period. | |
| Jun 14, 2020 at 23:28 | history | bounty ended | fgrieu♦ | ||
| Jun 7, 2020 at 8:33 | history | bounty ended | fgrieu♦ | ||
| Jun 7, 2020 at 8:33 | vote | accept | fgrieu♦ | ||
| Jun 5, 2020 at 22:09 | comment | added | kodlu | Nice! last night here in the antipodes I actually made the same observations on the key bits. Not being a decent programmer, and having trouble with DES online implementations in python and other languages, and hex to bit conversions, I was hoping to proceed further with more mathematical reasoning or clumsy attempts at programming. But I am happy you verified the rest by brute force. | |
| Jun 4, 2020 at 18:54 | history | answered | Thomas Pornin | CC BY-SA 4.0 |