50 lines
1.7 KiB
Bash
50 lines
1.7 KiB
Bash
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#!/bin/sh
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set -e -u
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program="${0%/*}"/key_ladder_demo
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files_to_clean=
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run () {
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echo
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echo "# $1"
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shift
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echo "+ $*"
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"$@"
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}
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if [ -e master.key ]; then
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echo "# Reusing the existing master.key file."
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else
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files_to_clean="$files_to_clean master.key"
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run "Generate a master key." \
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"$program" generate master=master.key
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fi
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files_to_clean="$files_to_clean input.txt hello_world.wrap"
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echo "Here is some input. See it wrapped." >input.txt
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run "Derive a key and wrap some data with it." \
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"$program" wrap master=master.key label=hello label=world \
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input=input.txt output=hello_world.wrap
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files_to_clean="$files_to_clean hello_world.txt"
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run "Derive the same key again and unwrap the data." \
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"$program" unwrap master=master.key label=hello label=world \
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input=hello_world.wrap output=hello_world.txt
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run "Compare the unwrapped data with the original input." \
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cmp input.txt hello_world.txt
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files_to_clean="$files_to_clean hellow_orld.txt"
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! run "Derive a different key and attempt to unwrap the data. This must fail." \
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"$program" unwrap master=master.key input=hello_world.wrap output=hellow_orld.txt label=hellow label=orld
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files_to_clean="$files_to_clean hello.key"
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run "Save the first step of the key ladder, then load it as a master key and construct the rest of the ladder." \
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"$program" save master=master.key label=hello \
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input=hello_world.wrap output=hello.key
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run "Check that we get the same key by unwrapping data made by the other key." \
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"$program" unwrap master=hello.key label=world \
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input=hello_world.wrap output=hello_world.txt
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# Cleanup
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rm -f $files_to_clean
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