63 lines
2.5 KiB
Bash
Executable file
63 lines
2.5 KiB
Bash
Executable file
#!/bin/sh
|
|
#
|
|
# Copyright The Mbed TLS Contributors
|
|
# SPDX-License-Identifier: Apache-2.0
|
|
#
|
|
# Licensed under the Apache License, Version 2.0 (the "License"); you may
|
|
# not use this file except in compliance with the License.
|
|
# You may obtain a copy of the License at
|
|
#
|
|
# http://www.apache.org/licenses/LICENSE-2.0
|
|
#
|
|
# Unless required by applicable law or agreed to in writing, software
|
|
# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
|
|
# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
# See the License for the specific language governing permissions and
|
|
# limitations under the License.
|
|
|
|
. "${0%/*}/../demo_common.sh"
|
|
|
|
msg <<'EOF'
|
|
This script demonstrates the use of the PSA cryptography interface to
|
|
create a master key, derive a key from it and use that derived key to
|
|
wrap some data using an AEAD algorithm.
|
|
EOF
|
|
|
|
depends_on MBEDTLS_SHA256_C MBEDTLS_MD_C MBEDTLS_AES_C MBEDTLS_CCM_C MBEDTLS_PSA_CRYPTO_C MBEDTLS_FS_IO
|
|
|
|
program="${0%/*}"/key_ladder_demo
|
|
|
|
if [ -e master.key ]; then
|
|
echo "# Reusing the existing master.key file."
|
|
else
|
|
files_to_clean="$files_to_clean master.key"
|
|
run "Generate a master key." \
|
|
"$program" generate master=master.key
|
|
fi
|
|
|
|
files_to_clean="$files_to_clean input.txt hello_world.wrap"
|
|
echo "Here is some input. See it wrapped." >input.txt
|
|
run "Derive a key and wrap some data with it." \
|
|
"$program" wrap master=master.key label=hello label=world \
|
|
input=input.txt output=hello_world.wrap
|
|
|
|
files_to_clean="$files_to_clean hello_world.txt"
|
|
run "Derive the same key again and unwrap the data." \
|
|
"$program" unwrap master=master.key label=hello label=world \
|
|
input=hello_world.wrap output=hello_world.txt
|
|
run "Compare the unwrapped data with the original input." \
|
|
cmp input.txt hello_world.txt
|
|
|
|
files_to_clean="$files_to_clean hellow_orld.txt"
|
|
run_bad "Derive a different key and attempt to unwrap the data." \
|
|
"$program" unwrap master=master.key input=hello_world.wrap output=hellow_orld.txt label=hellow label=orld
|
|
|
|
files_to_clean="$files_to_clean hello.key"
|
|
run "Save the first step of the key ladder, then load it as a master key and construct the rest of the ladder." \
|
|
"$program" save master=master.key label=hello \
|
|
input=hello_world.wrap output=hello.key
|
|
run "Check that we get the same key by unwrapping data made by the other key." \
|
|
"$program" unwrap master=hello.key label=world \
|
|
input=hello_world.wrap output=hello_world.txt
|
|
|
|
cleanup
|