A simple git pre-commit hook that checks if any public keys in the current directory with extension .pub is secure

pre_commit

#!/bin/sh
# A simple git pre-commit hook that checks if any public keys in the current directory with extension .pub is secure
for i in $(ls pubkeys/*.pub)
	do
		# DSA is insecure
		f=$(ssh-keygen -l -f $i | cut -d "(" -f2 | cut -d ")" -f1)
		echo "$f"
		[ "$f" = "DSA" ] && echo "DSA is insecure: $i" && exit 1

		#RSA < 2096 bits is not that secure
		b=$(ssh-keygen -l -f $i | awk -F\   '{print $1}')
		[ "$f" = "RSA" ] && [ "$b" -lt 4096 ] &&  echo "RSA should not be < 4096 bits: $i" && exit 1
	done