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Fix non random GREASE generation

This commit is contained in:
Qian Wang 2019-08-02 20:06:41 +01:00
parent 05972863b5
commit e0e33e12d6
1 changed files with 4 additions and 4 deletions
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8
internal/client/chrome.go
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@ -3,10 +3,9 @@
package client
import (
"crypto/rand"
"encoding/binary"
"encoding/hex"
"math/rand"
"time"
)
type Chrome struct{}
@ -14,8 +13,9 @@ type Chrome struct{}
func makeGREASE() []byte {
// see https://tools.ietf.org/html/draft-davidben-tls-grease-01
// This is exclusive to Chrome.
rand.Seed(time.Now().UnixNano())
sixteenth := rand.Intn(16)
var one [1]byte
rand.Read(one[:])
sixteenth := one[0] % 16
monoGREASE := byte(sixteenth*16 + 0xA)
doubleGREASE := []byte{monoGREASE, monoGREASE}
return doubleGREASE