QSslKey: Implement PKCS#8 support for the generic backend

This patch adds the ability to decode keys which are encoded with PKCS#8
using the generic back-end (used in winrt and secure transport).

It works on both WinRT and macOS; however QSslKey seems unused in the
WinRT backend and it seems only RSA keys can be used for certificates
on macOS. Meaning that DSA and Ec, which in theory* should represent
their unencrypted versions, can't currently be tested properly.

* Can also be confirmed by loading the key using the ST or WinRT
backend, calling toPem(), writing the output to a file and then loading
the unencrypted key using openssl.

[ChangeLog][QtNetwork][QSslKey] Added support for PKCS#8-encoded keys
in the generic SSL back-end (used for SecureTransport on macOS and for
WinRT). Note that it does not support keys encrypted with a PKCS#12
algorithm.

Task-number: QTBUG-59068
Change-Id: Ib27338edc7dbcb5c5e4b02addfdb4b62ac93a4c3
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
Reviewed-by: Edward Welbourne <edward.welbourne@qt.io>

0 files changed, 0 insertions, 0 deletions