Created
April 28, 2018 06:15
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Personal sshfpgen
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#!/bin/bash | |
# | |
# sshfpgen - Creates SSHFP Records for all available keys | |
# | |
HOST="${1-$(hostname -f)}" | |
if [[ "$1" == "-h" || "$1" == "--help" ]] | |
then | |
echo "Usage: sshfpgen <hostname>" | |
fi | |
if which openssl >/dev/null 2>&1 | |
then | |
if ! which sha1sum >/dev/null 2>&1 | |
then | |
sha1sum() { | |
openssl dgst -sha1 | grep -E -o "[0-9a-f]{40}" | |
} | |
fi | |
if ! which sha256sum >/dev/null 2>&1 | |
then | |
sha256sum() { | |
openssl dgst -sha256 | grep -E -o "[0-9a-f]{64}" | |
} | |
fi | |
fi | |
for pubkey in /etc/ssh/ssh_host_*_key.pub /etc/ssh_host_*_key.pub | |
do | |
case "$(cut -d _ -f3 <<< "$pubkey")" | |
in | |
rsa) | |
echo "$HOST IN SSHFP 1 1 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha1sum | cut -f 1 -d ' ')" | |
echo "$HOST IN SSHFP 1 2 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha256sum | cut -f 1 -d ' ')" | |
;; | |
dsa) | |
echo "$HOST IN SSHFP 2 1 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha1sum | cut -f 1 -d ' ')" | |
echo "$HOST IN SSHFP 2 2 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha256sum | cut -f 1 -d ' ')" | |
;; | |
ecdsa) | |
echo "$HOST IN SSHFP 3 1 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha1sum | cut -f 1 -d ' ')" | |
echo "$HOST IN SSHFP 3 2 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha256sum | cut -f 1 -d ' ')" | |
;; | |
ed25519) | |
echo "$HOST IN SSHFP 4 1 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha1sum | cut -f 1 -d ' ')" | |
echo "$HOST IN SSHFP 4 2 $(cut -f2 -d ' ' "$pubkey" | base64 --decode | sha256sum | cut -f 1 -d ' ')" | |
;; | |
esac | |
done | |
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