execution speed on openbsd 7.3

[bK4gYuRo]

enchive on openbsd 7.3 runs ~5 times slower than on macos 10.13 or void linux.

Extraction of the same archive file takes 11.5 sec on openbsd and less than 2 seconds on macos:

On openbsd:

$ time ./enchive -s ~/.keep/keep.s extract < ~/.keep/.keep.enc > /dev/null passphrase: 0m18.62s real 0m11.46s user 0m00.10s system

On macos:

$ time ./enchive -s ~/.keep/keep.s extract < ~/.keep/.keep.enc > /dev/null passphrase:

real 0m7.87s user 0m1.59s sys 0m0.02s

Could the slowdown be caused by openbsd libc?