22 lines
679 B
Text
22 lines
679 B
Text
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#!/bin/bash
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# from: https://awbmilne.github.io/blog/SSH-Host-Fallback/
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# Takes 2 arguments: a hostname and an ssh fingerprint
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# Retrieves all fingerprints from hostname and compares
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# to see if the fingerprint passed in is part of them.
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# If it is, returns true; if not, false.
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# Can be used for more secure matching on hostname availability
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# in sshconfig than e.g. nc ip matching.
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#
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# To find your keys fingerprint, one option is just connecting
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# via `ssh -v` and looking for the fingerprint there.
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fingerprints=$(ssh-keygen -lf <(ssh-keyscan "$1" 2>/dev/null))
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for fingerprint in $fingerprints; do
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if [ "$fingerprint" == "$2" ]; then
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exit 0
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fi
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done
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exit 1
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