107 lines
2.5 KiB
Bash
Executable File
107 lines
2.5 KiB
Bash
Executable File
#!/usr/bin/env bash
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###############################################################################
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# Copyright 2019 Justin Keller
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#
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# Licensed under the Apache License, Version 2.0 (the "License");
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# you may not use this file except in compliance with the License.
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# You may obtain a copy of the License at
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#
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# http://www.apache.org/licenses/LICENSE-2.0
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#
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# Unless required by applicable law or agreed to in writing, software
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# distributed under the License is distributed on an "AS IS" BASIS,
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# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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# See the License for the specific language governing permissions and
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# limitations under the License.
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###############################################################################
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set -eo pipefail; [[ $TRACE ]] && set -x
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readonly VERSION="2.2.0"
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readonly OPENSSL_CIPHER_TYPE="aes-256-cbc"
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cryptr_version() {
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echo "cryptr $VERSION"
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}
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cryptr_help() {
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echo "Usage: cryptr command <command-specific-options>"
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echo
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cat<<EOF | column -c2 -t -s,
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encrypt <file>, Encrypt file
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decrypt <file.aes>, Decrypt encrypted file
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help, Displays help
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version, Displays the current version
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EOF
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echo
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}
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cryptr_encrypt() {
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local _file="$1"
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if [[ ! -f "$_file" ]]; then
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echo "File not found" 1>&2
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exit 4
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fi
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if [[ ! -z "${CRYPTR_PASSWORD}" ]]; then
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echo "[notice] using environment variable CRYPTR_PASSWORD for the password"
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openssl $OPENSSL_CIPHER_TYPE -salt -pbkdf2 -in "$_file" -out "${_file}.aes" -pass env:CRYPTR_PASSWORD
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else
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openssl $OPENSSL_CIPHER_TYPE -salt -pbkdf2 -in "$_file" -out "${_file}.aes"
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fi
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}
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cryptr_decrypt() {
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local _file="$1"
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if [[ ! -f "$_file" ]]; then
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echo "File not found" 1>&2
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exit 5
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fi
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if [[ ! -z "${CRYPTR_PASSWORD}" ]]; then
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echo "[notice] using environment variable CRYPTR_PASSWORD for the password"
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openssl $OPENSSL_CIPHER_TYPE -d -salt -pbkdf2 -in "$_file" -out "${_file%\.aes}" -pass env:CRYPTR_PASSWORD
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else
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openssl $OPENSSL_CIPHER_TYPE -d -salt -pbkdf2 -in "$_file" -out "${_file%\.aes}"
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fi
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}
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cryptr_main() {
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local _command="$1"
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if [[ -z $_command ]]; then
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cryptr_version
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echo
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cryptr_help
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exit 0
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fi
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shift 1
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case "$_command" in
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"encrypt")
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cryptr_encrypt "$@"
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;;
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"decrypt")
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cryptr_decrypt "$@"
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;;
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"version")
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cryptr_version
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;;
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"help")
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cryptr_help
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;;
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*)
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cryptr_help 1>&2
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exit 3
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esac
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}
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if [[ "$0" == "$BASH_SOURCE" ]]; then
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cryptr_main "$@"
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fi
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