Salsa20 Golang

main.go

package main

import (
    //"crypto/rand"
    "fmt"
    "golang.org/x/crypto/salsa20"
)

func main() {
    nonce := []byte {
        0xe1,0x71,0x69,0x88,0xf5,0x62,0xad,0xb7,0xb1,0xcb,0x96,0x87,0x3c,0x80,0x7e,0x5a,0x4b,0xfd,0x39,
        0x35,0x11,0x7b,0xf3,0x9f}
    key := [32]byte {
        0xee,0xce,0x81,0x55,0x9b,0x5d,0xa6,0xb0,0xd8,0xb0,0x1f,0x51,0x8d,0xbb,0x11,0x6,0x62,0x3e,0xea,
        0xd7,0x7c,0x2b,0x34,0x18}
    /*
    // Generate a random 24 bytes nonce
    nonce := make([]byte, 24)

    if _, err := rand.Read(nonce); err != nil {
        panic(err)
    }

    randomData := make([]byte, 32)
    if _, err := rand.Read(randomData); err != nil {
        panic(err)
    }

    var key [32]byte
    copy(key[:], randomData[:])
*/
    fmt.Printf("Key len: %d bytes\n", len(key))

    fmt.Printf("Key: {")
    for _, element := range key {
        fmt.Printf("%#x,", element)
    }
    fmt.Printf("}\n")

    fmt.Printf("Nonce: {")
    for _, element := range nonce {
        fmt.Printf("%#x,", element)
    }
    fmt.Printf("}\n")

    text := []byte("Hello, from Go!")

    ciphertext := make([]byte, len(text))

    salsa20.XORKeyStream(ciphertext, text, nonce, &key)

    fmt.Printf("\n%#x\n", ciphertext)
}