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implement draft-10 changes for QHKDF-Expand

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Marten Seemann
2018-03-29 14:21:53 +07:00
parent 51b9820084
commit 469bad6350
3 changed files with 18 additions and 20 deletions
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4
internal/crypto/key_derivation.go
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@@ -20,9 +20,7 @@ type TLSExporter interface {
}
func qhkdfExpand(secret []byte, label string, length int) []byte {
// The last byte should be 0x0.
// Since Go initializes the slice to 0, we don't need to set it explicitly.
qlabel := make([]byte, 2+1+5+len(label)+1)
qlabel := make([]byte, 2+1+5+len(label))
binary.BigEndian.PutUint16(qlabel[0:2], uint16(length))
qlabel[2] = uint8(5 + len(label))
copy(qlabel[3:], []byte("QUIC "+label))