[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 #8 from Matt Fagnani <matt.fagnani at bell.net> ---
I bisected this problem with qca from 2.3.7 to 2.3.8. The following first bad
commit involved loading legacy openssl providers.

14eb1ae746c3c75afaef02b487ac65b3de85ad15 is the first bad commit
commit 14eb1ae746c3c75afaef02b487ac65b3de85ad15
Author: Fabian Vogt <fabian at ritter-vogt.de>
Date:   Fri Dec 22 13:36:00 2023 +0100

    plugins/qca-ossl: Actually try loading the legacy provider

    OSSL_PROVIDER_available returns true only for loaded providers, not whether
    a provider can be loaded. Use OSSL_PROVIDER_try_load instead, which also
    allows to keep the default fallback provider.

 plugins/qca-ossl/qca-ossl.cpp | 24 +++++-------------------
 1 file changed, 5 insertions(+), 19 deletions(-)

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