[qca] [Bug 482819] kwalletd6 sometimes crashed in QCA::PrivateKey::deriveKey when starting Proton VPN GUI

[Matt Fagnani]

https://bugs.kde.org/show_bug.cgi?id=482819

--- Comment #17 from Matt Fagnani <matt.fagnani at bell.net> ---
In KWalletFreedesktopService::createSessionAlgorithmDhAes at
/usr/src/debug/kf6-kwallet-6.0.0-1.fc40.x86_64/src/runtime/kwalletd/kwalletfreedesktopservice.cpp:415
there is const auto dlGroup =
QCA::DLGroup(keygen.createDLGroup(QCA::IETF_1024)); If QCA::IETF_1024 means
that 1024 bit DH keys are used, this might not be allowed by the default crypto
policy in Fedora which I'm using. man crypto-policies shows for the DEFAULT
policy "The Diffie-Hellman parameters are accepted if they are at least 2048
bits long." The private key and public key generated might have had null
pointers because the key size wasn't large enough for the default crypto
policy.

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