A lightweight Go implementation of the ChaCha32 stream encryption.
Compatible with C and Arduino versions – designed for secure communication between microcontrollers and Go backends.
go get github.com/regimantas/chacha32go/chacha32package main
import (
"fmt"
"github.com/regimantas/chacha32go/chacha32"
)
func main() {
// Message with '\0' at the end (as in C/Arduino)
message := append([]byte("Hello ChaCha32!"), 0)
// 32-byte key (same as Arduino/C)
key := []byte{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
}
// 12-byte nonce (same as Arduino/C)
nonce := []byte{
0x00, 0x00, 0x00, 0x09,
0x00, 0x00, 0x00, 0x4A,
0x00, 0x00, 0x00, 0x00,
}
// Encrypt the message
ciphertext := chacha32.Encrypt(key, nonce, message)
// Print encrypted bytes
fmt.Printf("Encrypted: ")
for _, b := range ciphertext {
fmt.Printf("%02X ", b)
}
fmt.Println()
// Decrypt the message
decrypted := chacha32.Decrypt(key, nonce, ciphertext)
// Print decrypted text
fmt.Printf("Decrypted: %s\n", decrypted)
}package main
import (
"fmt"
"github.com/regimantas/chacha32go/chacha32"
)
func main() {
// 32-byte key (same as Arduino/C)
key := []byte{
0x00, 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07,
0x08, 0x09, 0x0A, 0x0B, 0x0C, 0x0D, 0x0E, 0x0F,
0x10, 0x11, 0x12, 0x13, 0x14, 0x15, 0x16, 0x17,
0x18, 0x19, 0x1A, 0x1B, 0x1C, 0x1D, 0x1E, 0x1F,
}
// 12-byte nonce (same as Arduino/C)
nonce := []byte{
0x00, 0x00, 0x00, 0x09,
0x00, 0x00, 0x00, 0x4A,
0x00, 0x00, 0x00, 0x00,
}
message := []byte("Hello ChaCha32!")
ciphertext := chacha32.Encrypt(key, nonce, message)
decrypted := chacha32.Decrypt(key, nonce, ciphertext)
fmt.Printf("Encrypted: %x\n", ciphertext)
fmt.Printf("Decrypted: %s\n", decrypted)
}MIT