You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
38 lines
933 B
38 lines
933 B
#!/usr/bin/env bash
|
|
|
|
|
|
# return password to password storage shell
|
|
get_password() {
|
|
printf 'secret'
|
|
}
|
|
|
|
# initialization value
|
|
n=7
|
|
# 'hashed' password
|
|
hashed_password=168372036536695091
|
|
|
|
# read password as parameter ...
|
|
password=$1
|
|
# ... or ask for password
|
|
[ -z $1 ] && printf "Enter password:\n" && read -s password
|
|
|
|
# 'hash' the password with some random multiplications
|
|
for (( i=0; i<${#password}; i++ )); do
|
|
charval=$(printf "%d\n" \'${password:$i:1}) # ascii value of the current character
|
|
n=$(echo "$n * 27 + $charval * 5" | bc) # do some computations and assign to intermediate result
|
|
done
|
|
|
|
# check if hash of entered password is equal to 'hashed' password
|
|
if [[ $n -eq $hashed_password ]]; then
|
|
# if yes then grant access to prompt
|
|
while true; do
|
|
printf "\n$(whoami)'s password storage> "
|
|
read pass
|
|
get_password
|
|
done
|
|
exit 0
|
|
else
|
|
# else exit with error code
|
|
printf "\nWrong password."
|
|
exit 1
|
|
fi
|