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8328046: Need to keep leading zeros in TlsPremasterSecret of TLS1.3 DHKeyAgreement

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Reviewed-by: hchao
This commit is contained in:
Daniel Jeliński 2026-01-22 21:48:28 +00:00
parent d6ebcf8a4f
commit 25d2b52ab9
1 changed files with 3 additions and 3 deletions
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6
src/java.base/share/classes/sun/security/ssl/KAKeyDerivation.java
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@ -1,5 +1,5 @@
/*
* Copyright (c) 2019, 2025, Oracle and/or its affiliates. All rights reserved.
* Copyright (c) 2019, 2026, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
@ -214,13 +214,13 @@ public class KAKeyDerivation implements SSLKeyDerivation {
var decapsulator = kem.newDecapsulator(localPrivateKey);
sharedSecret = decapsulator.decapsulate(
keyshare, 0, decapsulator.secretSize(),
"TlsPremasterSecret");
"Generic");
} else {
// Using traditional DH-style Key Agreement
KeyAgreement ka = KeyAgreement.getInstance(algorithmName);
ka.init(localPrivateKey);
ka.doPhase(peerPublicKey, true);
sharedSecret = ka.generateSecret("TlsPremasterSecret");
sharedSecret = ka.generateSecret("Generic");
}
return deriveHandshakeSecret(type, sharedSecret);