crypto: recognize raw formats in keygen #4775

Job	Run time
Build slim tarball	2m 17s
aarch64-linux: with shared libraries	20m 5s
x86_64-darwin: with shared libraries	30m 22s
aarch64-darwin: with shared libraries	17m 42s
x86_64-linux: with shared libraries	23m 43s
	1h 34m 9s

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