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Set is1RTT correctly for sealer/opener

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Ensure that the rigth mask is picked for header protection.
This commit is contained in:
Niklas Gustavsson
2019-01-08 22:29:07 -05:00
parent 6fbe8d563e
commit edecc88ebf
1 changed files with 4 additions and 14 deletions
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18
internal/handshake/crypto_setup.go
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@@ -417,20 +417,15 @@ func (h *cryptoSetup) SetReadKey(suite *qtls.CipherSuite, trafficSecret []byte)
if err != nil {
panic(fmt.Sprintf("error creating new AES cipher: %s", err))
}
opener := newOpener(
suite.AEAD(key, iv),
hpDecrypter,
h.readEncLevel == protocol.Encryption1RTT,
)
switch h.readEncLevel {
case protocol.EncryptionInitial:
h.readEncLevel = protocol.EncryptionHandshake
h.handshakeOpener = opener
h.handshakeOpener = newOpener(suite.AEAD(key, iv), hpDecrypter, false)
h.logger.Debugf("Installed Handshake Read keys")
case protocol.EncryptionHandshake:
h.readEncLevel = protocol.Encryption1RTT
h.opener = opener
h.opener = newOpener(suite.AEAD(key, iv), hpDecrypter, true)
h.logger.Debugf("Installed 1-RTT Read keys")
default:
panic("unexpected read encryption level")
@@ -446,20 +441,15 @@ func (h *cryptoSetup) SetWriteKey(suite *qtls.CipherSuite, trafficSecret []byte)
if err != nil {
panic(fmt.Sprintf("error creating new AES cipher: %s", err))
}
sealer := newSealer(
suite.AEAD(key, iv),
hpEncrypter,
h.writeEncLevel == protocol.Encryption1RTT,
)
switch h.writeEncLevel {
case protocol.EncryptionInitial:
h.writeEncLevel = protocol.EncryptionHandshake
h.handshakeSealer = sealer
h.handshakeSealer = newSealer(suite.AEAD(key, iv), hpEncrypter, false)
h.logger.Debugf("Installed Handshake Write keys")
case protocol.EncryptionHandshake:
h.writeEncLevel = protocol.Encryption1RTT
h.sealer = sealer
h.sealer = newSealer(suite.AEAD(key, iv), hpEncrypter, true)
h.logger.Debugf("Installed 1-RTT Write keys")
default:
panic("unexpected write encryption level")