Created
April 14, 2025 16:02
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#!/bin/bash | |
# Bash script which takes a private key used to sign Chrome extensions as input | |
# and outputs the Chrome extension ID that will be generated. | |
function hex_to_id { | |
strout="${1//f/p}" | |
strout="${strout//e/o}" | |
strout="${strout//d/n}" | |
strout="${strout//c/m}" | |
strout="${strout//b/l}" | |
strout="${strout//a/k}" | |
strout="${strout//9/j}" | |
strout="${strout//8/i}" | |
strout="${strout//7/h}" | |
strout="${strout//6/g}" | |
strout="${strout//5/f}" | |
strout="${strout//4/e}" | |
strout="${strout//3/d}" | |
strout="${strout//2/c}" | |
strout="${strout//1/b}" | |
strout="${strout//0/a}" | |
echo "$strout" | |
} | |
in_file="$1" | |
if ! [ -f "$in_file" ]; then | |
echo "ERROR: File ${in_file} does not exist" | |
exit 1 | |
fi | |
if ! [ -x "$(command -v openssl)" ]; then | |
echo 'Error: openssl is not installed and is needed for hashing functions.' >&2 | |
exit 1 | |
fi | |
myhash=$(openssl rsa -in "$in_file" -pubout -outform DER 2>/dev/null | openssl dgst -sha256 -r) | |
myhash="${myhash:0:32}" | |
id="" | |
while IFS= read -r -n 1 char; do | |
shifted=$(hex_to_id "$char") | |
id+="$shifted" | |
done <<< "$myhash" | |
echo "ID: $id" |
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