59 lines
1.8 KiB
Bash
Executable File
59 lines
1.8 KiB
Bash
Executable File
#!/bin/bash
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# FAIR License, Copyright (c) 2019 72Zn
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# Usage of the works is permitted provided that this instrument is retained
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# with the works, so that any entity that uses the works is notified of this
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# instrument.
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# DISCLAIMER: THE WORKS ARE WITHOUT WARRANTY.
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# Use the -p flag to 'pad' the results making it harder for attackers to
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# determine your hash prefix by looking at https traffic.
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# See https://www.troyhunt.com/enhancing-pwned-passwords-privacy-with-padding/
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# Usage:
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# ./pwned.sh [-p] [pw1] [pw2] ...
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# ./pwned.sh [-p] < <file_with_passwords>
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# echo pw | ./pwned.sh [-p]
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# Examples:
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# ./pwned.sh # You will be prompted for passwords to check.
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# ./pwned.sh -p passw0rd123456
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# ./pwned.sh < file_with_passwords.txt
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# echo passw0rd123456 | ./pwned.sh
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# echo -e "passw0rd123456\nfoob@r" | ./pwned.sh -p
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PWNAPI="https://api.pwnedpasswords.com/range"
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lookup_pwned_api() {
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local pass="$1"
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local pwhash=$(printf "%s" "$pass" | sha1sum | cut -d" " -f1)
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local curlrv=$(curl ${PADDING_HEAD} -s "$PWNAPI/${pwhash:0:5}")
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[ -z "$curlrv" ] && echo "$pass could not be checked" && return
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local result=$(echo "$curlrv" | grep -i "${pwhash:5:35}")
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if [ -n "$result" ]; then
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local occ=$(printf "%s" "${result}" | cut -d: -f2 | sed 's/[^0-9]*//g')
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printf "%s was found with %s occurrences (hash: %s)\n" "$pass" "$occ" "$pwhash"
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else
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printf "%s was not found\n" "$pass"
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fi
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}
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# If the first parameter is the -p flag, then ask the server to pad the results.
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if [[ "$1" == "-p" ]]; then
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PADDING_HEAD="-H 'Add-Padding: true'"
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shift # Remove the '-p' from $@
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fi
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if [[ $# -eq 0 ]]; then
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# read from file or stdin (one password per line)
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while IFS=$'\r\n' read -r pw; do
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lookup_pwned_api "$pw"
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done
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else
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# read arguments
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for pw in "$@"; do
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lookup_pwned_api "$pw"
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done
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fi
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