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OpenSSL 3.0 has completely revamed the way applications are supposed to interact with libcrypto with the old way gaining a hefty perfomance penalty. Almost every cryptographic functionality will have a pre-3.0 and post-3.0 counterpart split by the preprocessor after the migration is complete. Instead of having a macros mess everywhere, start the long term plan of having a cryptographic functionality layer with OpenSSL >=3.0 and OpenSSL <3.0 as two separate backends. Start this process by splitting the initialization function.