Protect your content with temporary links and secure tokens

package main

import (
  "crypto/md5"
  "encoding/base64"
  "fmt"
  "time"
)

func gethash(clientId string, videoId string, secret string, expires int64) string {
  hashBody := fmt.Sprintf("%s_%s_%s_%d_", clientId, videoId, secret, expires) // set of unique parameters of video
  md5sum := md5.Sum([]byte(hashBody)) // get MD5 hash from parameters of video
  hashMd5 := base64.RawURLEncoding.EncodeToString(md5sum[:])
  return hashMd5
}

func main() {
  clientId := "2675" // enter your account ID here
  secret := ""       // enter your secret key from CDN-resource here

  //VOD
  videoSlug := "3dk4NsRt6vWsffEr"         // enter your video's slug here
  expires := time.Now().Unix() + 24*60*60 // now + 24 hours, unixtime in seconds

  token := gethash(clientId, videoSlug, secret, expires)
  fmt.Printf("https://demo-protected.gvideo.io/videos/%s_%s/%s/%d/master.m3u8 \n", clientId, videoSlug, token, expires)

  //LIVE
  streamId := "201693"                   // enter your live stream id here
  expires = time.Now().Unix() + 24*60*60 // now + 24 hours, unixtime in seconds

  token = gethash(clientId, streamId, secret, expires)
  fmt.Printf("https://demo-protected.gvideo.io/cmaf/%s_%s/%s/%d/master.m3u8 \n", clientId, streamId, token, expires)
}

package main

import (
  "crypto/md5"
  "encoding/base64"
  "fmt"
  "time"
)

func gethash_mp4(uri, secret string, expires int64, speed, buffer, ip string) string {
  hashBody := fmt.Sprintf("%s_%s_%d_%s_%s_%s", uri, secret, expires, speed, buffer, ip)
  md5sum := md5.Sum([]byte(hashBody))
  hashMd5 := base64.RawURLEncoding.EncodeToString(md5sum[:])
  return hashMd5
}

const time_format string = "2006-01-02 15:04"

func main() {
  var token, speed, buffer string

  secret := ""                                                     // enter your secret key from the CDN-resource
  uri := "/videos/2675_pG8TfmKx2LU2qs/qid3570v1_h264_1800_720.mp4" // path of the MP4 file

  //timeNow := time.Now().UTC()
  timeNow, _ := time.Parse(time_format, "2025-09-16 23:00") // workaround for Go playground. As you know time.Now() doesn’t work in goplay.tools, because playground runs in a deterministic sandboxed environment where system time is not exposed.
  expires := timeNow.Add(24 * time.Hour).Unix()             // expiration = now + 24 hours, unixtime in seconds

  fmt.Println("Now:     ", timeNow.Unix(), timeNow.UTC().Format(time_format))
  fmt.Println("Expires: ", expires, time.Unix(expires, 0).UTC().Format(time_format))

  // MP4 protected (the CDN resource must be with deactivated option "Add a client's IP to the token")
  token = gethash_mp4(uri, secret, expires, "", "", "")
  fmt.Printf("https://demo-protected.gvideo.io%s?md5=%s&expires=%d\n", uri, token, expires)
  fmt.Printf("https://demo-protected.gvideo.io%s/download?md5=%s&expires=%d\n", uri, token, expires)
  fmt.Printf("https://demo-protected.gvideo.io%s/download=my-awesome-video?md5=%s&expires=%d\n", uri, token, expires)

  // MP4 with speed limit
  speed = "1M"
  token = gethash_mp4(uri, secret, expires, speed, "", "")
  fmt.Printf("https://demo-protected.gvideo.io%s?md5=%s&expires=%d&speed=%s\n", uri, token, expires, speed)

  // MP4 with speed and buffer limit
  speed = "500K"
  buffer = "10M"
  token = gethash_mp4(uri, secret, expires, speed, buffer, "")
  fmt.Printf("https://demo-protected.gvideo.io%s?md5=%s&expires=%d&speed=%s&buffer=%s\n", uri, token, expires, speed, buffer)

  // MP4 protected with user's IP address (the CDN resource must be with activated option "Add a client's IP to the token")
  ip := "92.223.112.84" //
  token = gethash_mp4(uri, secret, expires, "", "", ip)
  fmt.Printf("https://demo-protected-ip.gvideo.io%s?md5=%s&expires=%d\n", uri, token, expires)
  fmt.Printf("https://demo-protected-ip.gvideo.io%s/download?md5=%s&expires=%d\n", uri, token, expires)
  fmt.Printf("https://demo-protected-ip.gvideo.io%s/download=my-awesome-video?md5=%s&expires=%d\n", uri, token, expires)

  // MP4 protected with user's IP address and speed limit
  speed = "1000K"
  token = gethash_mp4(uri, secret, expires, speed, "", ip)
  fmt.Printf("https://demo-protected-ip.gvideo.io%s?md5=%s&expires=%d&speed=%s\n", uri, token, expires, speed)

  // MP4 protected with user's IP address, speed and buffer limit
  speed = "500K"
  buffer = "10M"
  token = gethash_mp4(uri, secret, expires, speed, buffer, ip)
  fmt.Printf("https://demo-protected-ip.gvideo.io%s?md5=%s&expires=%d&speed=%s&buffer=%s\n", uri, token, expires, speed, buffer)
}