Created
February 17, 2023 04:05
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Check haveIbeenpwned database for a password
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| #!/bin/sh | |
| if [ -z "$1" ]; then | |
| echo "$0 <password>" | |
| exit | |
| fi | |
| checksum="$(printf '%s' "$1" | sha1sum | awk '{print $1}')" | |
| prefix="$(printf '%.5s' "$checksum")" | |
| suffix="$(printf "$checksum" | sed 's/^.\{5\}//')" | |
| if [ "$checksum" != "$prefix$suffix" ]; then | |
| echo "Sanity failure - failed to extract prefix/suffix" | |
| exit 1 | |
| fi | |
| url="https://api.pwnedpasswords.com/range/$prefix" | |
| cat <<EOF | |
| Checking pwned for sha: | |
| $checksum | |
| + wget $url | |
| EOF | |
| candidates="$(wget "https://api.pwnedpasswords.com/range/$prefix" -O- 2>/dev/null)" | |
| # Lowercase for preference | |
| if echo "$candidates" | tr '[:upper:]' '[:lower:]' | grep "$suffix"; then | |
| echo 'Pwned!' | |
| else | |
| echo "No match found." | |
| fi |
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