TinyCrypto

A lightweight Go library for cryptographic operations, designed for WebAssembly and small devices using TinyGo.

Features

• Simple API: Easy-to-use API for symmetric and asymmetric encryption, and digital signatures.
• TinyGo Optimized: Designed to produce small binaries when compiled with TinyGo.
• WebAssembly Ready: Can be used in browser environments.
• Zero Dependencies on Go Standard Library: Uses github.com/tinywasm/fmt for string, number, and error handling to minimize binary size.

Basic Usage

To use the library, import the package and call its functions directly:

package main

import (
	"fmt"

	"github.com/tinywasm/crypto"
)

func main() {
	// Symmetric encryption
	key := make([]byte, 32) // AES-256 key
	plaintext := []byte("hello world")
	ciphertext, err := crypto.Encrypt(plaintext, key)
	if err != nil {
		panic(err)
	}
	decrypted, err := crypto.Decrypt(ciphertext, key)
	if err != nil {
		panic(err)
	}
	fmt.Println("Symmetric decrypted:", string(decrypted))

	// Asymmetric signatures
	pub, priv, err := crypto.GenerateKeyPair()
	if err != nil {
		panic(err)
	}
	message := []byte("this is a test message")
	signature, err := crypto.Sign(message, priv)
	if err != nil {
		panic(err)
	}
	ok, err := crypto.Verify(message, signature, pub)
	if err != nil {
		panic(err)
	}
	fmt.Println("Signature verified:", ok)
}

Documentation

The detailed API documentation is organized into the following sections:

• Symmetric Encryption
• Asymmetric Encryption
• Digital Signatures
• Architecture Details
• Implementation Guide