Security with Go

Generating an image with random noise

This program will create a JPEG image with every pixel set to a random color. It is a simple program so we have just a jpeg image available to work with. The Go standard library comes with jpeg, gif, and png packages. The interface to all different image types is the same, so swapping from a jpeg to a gif or png package is very easy:

package mainimport (   "image"   "image/jpeg"   "log"   "math/rand"   "os")

func main() {   // 100x200 pixels   myImage := image.NewRGBA(image.Rect(0, 0, 100, 200))    for p := 0; p < 100*200; p++ {      pixelOffset := 4 * p      myImage.Pix[0+pixelOffset] = uint8(rand.Intn(256)) // Red      myImage.Pix[1+pixelOffset] = uint8(rand.Intn(256)) // Green myImage.Pix[2+pixelOffset] = uint8(rand.Intn(256)) // ...