Refactor basic crypto to not use raw pointers. #2015

Job	Run time
windows-latest msys2 [msystem ucrt64; backend botan; build shared libs on; GnuPG stable]	8m 18s
windows-latest msys2 [msystem ucrt64; backend botan; build shared libs on; GnuPG stable]	8m 18s
windows-latest msys2 [msystem ucrt64; backend openssl; build shared libs on; GnuPG stable]	7m 9s
windows-latest msys2 [msystem ucrt64; backend openssl; build shared libs on; GnuPG stable]	7m 9s
windows-latest msys2 [msystem mingw64; backend botan; build shared libs on; GnuPG stable]	8m 18s
windows-latest msys2 [msystem mingw64; backend botan; build shared libs on; GnuPG stable]	8m 18s
windows-latest msys2 [msystem mingw64; backend openssl; build shared libs on; GnuPG stable]	6m 59s
windows-latest msys2 [msystem mingw64; backend openssl; build shared libs on; GnuPG stable]	6m 59s
windows-latest msys2 [msystem clang64; backend botan; build shared libs on; GnuPG stable]	7m 38s
windows-latest msys2 [msystem clang64; backend botan; build shared libs on; GnuPG stable]	7m 36s
windows-latest msys2 [msystem clang64; backend openssl; build shared libs on; GnuPG stable]	6m 44s
windows-latest msys2 [msystem clang64; backend openssl; build shared libs on; GnuPG stable]	6m 44s
windows-latest msys2 [msystem ucrt64; backend botan; build shared libs off; GnuPG stable]	8m 9s
windows-latest msys2 [msystem ucrt64; backend botan; build shared libs off; GnuPG stable]	8m 9s
	1h 46m 28s

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