hashkey

A2Y-D5L / hashkey

hashkey provides a simple, concurrency-safe way to generate deterministic hash keys from strings. Hashes are produced using the FNV-1a algorithm implemented in the Go standard library at hash/fnv.

The FNV hash was designed for fast hash table and checksum use, not cryptography.

— Fowler–Noll–Vo hash function - Wikipedia

Installation

To use the hashkey library, first ensure you have Go installed on your machine. Then, import the library into your Go project:

import "github.com/A2Y-D5L/hashkey"

Usage

The library provides two functions:

• String(s string) (string, error): Returns a hexadecimal string representation of the hash of the input string.
• Uint64(s string) (uint64, error): Returns the raw uint64 hash of the input string.

Examples

Generate a string

package main

import (
    "fmt"
    "github.com/A2Y-D5L/hashkey"
)

func main() {
    hash, err := hashkey.String("Hello there.")
    if err != nil {
        fmt.Println("Error generating hashkey:", err)
        return
    }
    fmt.Printf("String hash key: \"%s\"\n", hash) // -> String hash key: "892362dd056bbf55"

Generate a uint64

package main

import (
    "fmt"
    "github.com/A2Y-D5L/hashkey"
)

func main() {
    hash, err := hashkey.Uint64("General Kenobi! You are a bold one.")
    if err != nil {
        fmt.Println("Error generating hashkey:", err)
        return
    }
    fmt.Printf("Uint64 hash key: %x\n", hash) // -> Uint64 hash key: 0x58d72f7088dae07
}

Concurrency-Safety

The hashkey library is designed to be safe for concurrent use. Each call to String or Uint64 operates independently, using its instance of the FNV-1a hash function, ensuring no shared state between calls.