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v1 source pure

Entropy generates fully deterministic, cost-effective, and hard to guess numbers.

Readme View source

gno.land/p/moul/entropy/v1

A cheap, deterministic pseudo-entropy source for gno realms (seeded from block height / time / caller), useful for demos and non-security-critical randomness.

Part of moul/gno-contracts — moul's versioned gno.land contracts. See the repository for the full catalog, build/test tooling, and usage.

⚠️ Disclaimer: provided as-is, without warranty; not security-audited. Full disclaimer: DISCLAIMER.

Overview

Entropy generates fully deterministic, cost-effective, and hard to guess numbers.

It is designed both for single-usage, like seeding math/rand or for being reused which increases the entropy and its cost effectiveness.

Disclaimer: this package is unsafe and won't prevent others to guess values in advance.

It uses the Bernstein's hash djb2 to be CPU-cycle efficient.

Functions 2

Types 1

type Instance

struct 
1type Instance struct {
2	value uint32
3}
source

Methods on Instance

func Seed

method on Instance 
1func (i *Instance) Seed() uint32
source

func Value

method on Instance 
1func (i *Instance) Value() uint32
source

func Value64

method on Instance 
1func (i *Instance) Value64() uint64
source

Imports 4

  • chain/runtime stdlib
  • chain/runtime/unsafe stdlib
  • math stdlib
  • time stdlib

Source Files 3