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fix: use random chars for padding to avoid unwanted header compression

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This commit is contained in:
tobyxdd 2023-05-31 22:11:52 -07:00
parent ebb9b3217e
commit 41f10a22c4
1 changed files with 9 additions and 2 deletions
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11
core/internal/protocol/padding.go
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@ -2,7 +2,10 @@ package protocol
import ( import (
"math/rand" "math/rand"
"strings" )
const (
paddingChars = "abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789"
) )
// padding specifies a half-open range [Min, Max). // padding specifies a half-open range [Min, Max).
@ -13,7 +16,11 @@ type padding struct {
func (p padding) String() string { func (p padding) String() string {
n := p.Min + rand.Intn(p.Max-p.Min) n := p.Min + rand.Intn(p.Max-p.Min)
return strings.Repeat("a", n) // No need to randomize since everything is encrypted anyway bs := make([]byte, n)
for i := range bs {
bs[i] = paddingChars[rand.Intn(len(paddingChars))]
}
return string(bs)
} }
var ( var (