V8.00.000.2025.06.17

Signed-off-by: Marc S. Weidner <msw@coresecret.dev>

lib/0105_arg_nuke_converter.sh

@@ -0,0 +1,66 @@
+#!/bin/bash
+# SPDX-Version: 3.0
+# SPDX-CreationInfo: 2025-06-17; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-ExternalRef: GIT https://git.coresecret.dev/msw/CISS.debian.installer.git
+# SPDX-FileContributor: WEIDNER, Marc S.; Centurion Intelligence Consulting Agency
+# SPDX-FileCopyrightText: 2024-2025; WEIDNER, Marc S.; <msw@coresecret.dev>
+# SPDX-FileType: SOURCE
+# SPDX-License-Identifier: EUPL-1.2 OR LicenseRef-CCLA-1.0
+# SPDX-LicenseComment: This file is part of the CISS.debian.installer.secure framework.
+# SPDX-PackageName: CISS.debian.installer
+# SPDX-Security-Contact: security@coresecret.eu
+
+guard_sourcing
+
+#######################################
+# Generates 'nuke=HASH' Bootparameter.
+# Globals:
+#   DIR_CNF
+#   ERR_READ_NUKE_FILE
+#   VAR_DEBUG_TRACE
+#   VAR_NUKE_HASH
+# Arguments:
+#   None
+# Returns:
+#   0: on success
+#   ERR_READ_NUKE_FILE
+#######################################
+nuke_passphrase() {
+  declare -r var_nuke_pwd_file="${DIR_CNF}/password_luks_nuke.txt"
+  declare var_temp_nuke_hash="" var_temp_plain_nuke_pwd="" var_salt=""
+
+  ### No tracing for security reasons
+  #[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set +x
+  if ! read_password_file "${var_nuke_pwd_file}" var_temp_plain_nuke_pwd; then
+    return "${ERR_READ_NUKE_FILE}"
+  fi
+  ### Turn on tracing again
+  #[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set -x
+
+  # shellcheck disable=SC2312
+  var_salt=$(tr -dc 'A-Za-z0-9' < /dev/random | head -c 16)
+
+  ### No tracing for security reasons
+  #[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set +x
+  var_temp_nuke_hash=$(mkpasswd --method=sha-512 --salt="${var_salt}" --rounds=8388608 "${var_temp_plain_nuke_pwd}")
+  ### Turn on tracing again
+  #[[ "${VAR_DEBUG_TRACE,,}" == "true" ]] && set -x
+
+  declare -grx VAR_NUKE_HASH="${var_temp_nuke_hash}"
+  unset var_temp_nuke_hash var_temp_plain_nuke_pwd
+
+  do_log "debug" "file_only" "NUKE hash starts with: ${VAR_NUKE_HASH:0:12}..."
+
+  sync
+  if shred -vfzu -n 5 "${var_nuke_pwd_file}" > /dev/null 2>&1; then
+    do_log "info" "file_only" "✅ Password file '${var_nuke_pwd_file}': shred -vfzu -n 5 >> done."
+  else
+    do_log "warn" "file_only" "❌ Password file '${var_nuke_pwd_file}': shred -vfzu -n 5 >> NOT successful."
+  fi
+  sync
+
+  do_log "info" "file_only" "Nuke Hash generated."
+  return 0
+}
+
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh