package main import ( "bytes" "encoding/hex" "fmt" "log" ) func main() { d := []byte{0x01, 0xff, 0x3a, 0xcd} s := hex.EncodeToString(d) fmt.Printf("Hex: %s\n", s) d2, err := hex.DecodeString(s) if err != nil { log.Fatalf("hex.DecodeString() failed with '%s'\n", err) } if !bytes.Equal(d, d2) { log.Fatalf("decoded version is different than original") } }