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#!/usr/bin/python3 import os import KernelCollection # Verify that we generate FIPS hash def check(kernel_cache): kernel_cache.buildKernelCollection("arm64", "/fips-33/main.kc", "/fips-33/main.kernel", "/fips-33/extensions", ["com.apple.kec.corecrypto"], []) kernel_cache.analyze("/fips-33/main.kc", ["-layout", "-arch", "arm64"]) assert len(kernel_cache.dictionary()["dylibs"]) == 2 assert kernel_cache.dictionary()["dylibs"][0]["name"] == "com.apple.kernel" assert kernel_cache.dictionary()["dylibs"][1]["name"] == "com.apple.kec.corecrypto" # Check fips kernel_cache.analyze("/fips-33/main.kc", ["-fips", "-arch", "arm64"]) # The first 32-byes are the hash, 38797d8d8f5cd344b7f172647c03b6b2712e41375f1641345a42973985dd7283, and the 01 on the end is padding from the original kext assert kernel_cache.dictionary()["fips"] == "38797d8d8f5cd344b7f172647c03b6b2712e41375f1641345a42973985dd728301" # [~]> xcrun -sdk iphoneos cc -arch arm64 -Wl,-static -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-rename_section,__TEXT,__text,__TEXT_EXEC,__text -Wl,-e,__start -Wl,-pagezero_size,0x0 -Wl,-pie main.c -o main.kernel # [~]> xcrun -sdk iphoneos cc -arch arm64 -Wl,-kext -mkernel -nostdlib -Wl,-add_split_seg_info -Wl,-no_data_const foo.c -o extensions/foo.kext/foo # [~]> rm -r extensions/*.kext/*.ld |