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add key derivation paths for QUIC v2

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This commit is contained in:
Marten Seemann
2022-05-23 19:15:54 +02:00
parent bad60f3c27
commit f10d4bd8f7
8 changed files with 837 additions and 748 deletions
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12
internal/handshake/aead.go
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@@ -9,9 +9,15 @@ import (
"github.com/lucas-clemente/quic-go/internal/utils"
)
func createAEAD(suite *qtls.CipherSuiteTLS13, trafficSecret []byte) cipher.AEAD {
key := hkdfExpandLabel(suite.Hash, trafficSecret, []byte{}, "quic key", suite.KeyLen)
iv := hkdfExpandLabel(suite.Hash, trafficSecret, []byte{}, "quic iv", suite.IVLen())
func createAEAD(suite *qtls.CipherSuiteTLS13, trafficSecret []byte, v protocol.VersionNumber) cipher.AEAD {
keyLabel := hkdfLabelKeyV1
ivLabel := hkdfLabelIVV1
if v == protocol.Version2 {
keyLabel = hkdfLabelKeyV2
ivLabel = hkdfLabelIVV2
}
key := hkdfExpandLabel(suite.Hash, trafficSecret, []byte{}, keyLabel, suite.KeyLen)
iv := hkdfExpandLabel(suite.Hash, trafficSecret, []byte{}, ivLabel, suite.IVLen())
return suite.AEAD(key, iv)
}