https://github.com/aep/feistel

collision-free pseudorandom sequence using a feistel cipher in cycle walking mode
https://github.com/aep/feistel

Last synced: about 1 month ago
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collision-free pseudorandom sequence using a feistel cipher in cycle walking mode

• Host: GitHub
• URL: https://github.com/aep/feistel
• Owner: aep
• License: mit
• Created: 2022-04-19T09:21:12.000Z (about 4 years ago)
• Default Branch: main
• Last Pushed: 2022-04-19T09:25:30.000Z (about 4 years ago)
• Last Synced: 2025-10-13T11:46:58.088Z (8 months ago)
• Language: Go
• Size: 1.95 KB
• Stars: 2
• Watchers: 1
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

          
collision-free pseudorandom sequence using a feistel cipher in cycle walking mode.

useful for avoiding hotspots in free-lists, or otherwise obfuscating a unique index.

This is NOT encryption. it just makes a sequence look random to the human eye

for example this generates a sequence from 0 to 1000 in deterministic but random-looking order

```golang

package main

import (

    "github.com/aep/feistel"

    "fmt"

)

func main() {

    var max uint32 = 1000;

    for i:=uint32(0);i