[PATCH v2 0/7] MR68: rsaenh RC2 bigger keys weirdness support and MAC hashes fixes.

[Paul Gofman (@gofman)]

It turns out the bigger RC2 key import works with SIMPLEBLOB but not PLAINTEXTKEYBLOB, thus advapi32/crypt.c test failure. A bigger key import doesn't seem to work with other ciphers (I tried with _RC4 and AES).

v2 changes:
- add tests for PLAINTEXTKEYBLOB import with bigger size to rsaenh;
- factor out alloc_key() function and use that instead of new_key() in symmetric_key_import(). Now this RC2 specifics logic is gathered in symmetric_key_import() where it seems to belong except for CPEncrypt() part which still seems to require a special case check.

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https://gitlab.winehq.org/wine/wine/-/merge_requests/68#note_891