Marc S. Weidner
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Signed-off-by: Marc S. Weidner <msw@coresecret.dev>
67 lines
2.3 KiB
Bash
67 lines
2.3 KiB
Bash
#!/bin/bash
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# SPDX-Version: 3.0
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# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
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# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
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# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
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# SPDX-FileType: SOURCE
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# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
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# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
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# SPDX-PackageName: CISS.debian.installer
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# SPDX-Security-Contact: security@coresecret.eu
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guard_sourcing
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#######################################
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# Generates 'nuke=HASH' Bootparameter.
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# Globals:
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# DIR_CNF
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# ERR_READ_NUKE_FILE
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# VAR_DEBUG_TRACE
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# VAR_NUKE_HASH
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# Arguments:
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# None
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# Returns:
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# 0: on success
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# ERR_READ_NUKE_FILE
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#######################################
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nuke_passphrase() {
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declare -r var_nuke_pwd_file="${DIR_CNF}/password_luks_nuke.txt"
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declare var_temp_nuke_hash="" var_temp_plain_nuke_pwd="" var_salt=""
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### No tracing for security reasons
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#[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set +x
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if [[ ! -f "${var_nuke_pwd_file}" ]] || ! IFS= read -r var_temp_plain_nuke_pwd < "${var_nuke_pwd_file}"; then
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return "${ERR_READ_NUKE_FILE}"
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fi
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### Turn on tracing again
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#[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set -x
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# shellcheck disable=SC2312
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var_salt=$(tr -dc 'A-Za-z0-9' < /dev/random | head -c 16)
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### No tracing for security reasons
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#[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set +x
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var_temp_nuke_hash=$(mkpasswd --method=sha-512 --salt="${var_salt}" --rounds=8388608 "${var_temp_plain_nuke_pwd}")
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### Turn on tracing again
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#[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set -x
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declare -grx VAR_NUKE_HASH="${var_temp_nuke_hash}"
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unset var_temp_nuke_hash var_temp_plain_nuke_pwd
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do_log "debug" "true" "NUKE hash starts with: ${VAR_NUKE_HASH:0:12}..."
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sync
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if shred -vfzu -n 5 "${var_nuke_pwd_file}" > /dev/null 2>&1; then
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do_log "info" "file_only" "✅ Password file '${var_nuke_pwd_file}': shred -vfzu -n 5 >> done."
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else
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do_log "warn" "false" "❌ Password file '${var_nuke_pwd_file}': shred -vfzu -n 5 >> NOT successful."
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fi
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sync
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do_log "info" "file_only" "Nuke Hash generated."
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return 0
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}
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# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh
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