V8.00.000.2025.06.17

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

func/system/4165_kernel_modules.sh

@@ -0,0 +1,61 @@
+#!/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
+
+#######################################
+# Entropy collection improvements '/usr/lib/modules-load.d/30_security-misc.conf'.
+# Globals:
+#   TARGET
+# Arguments:
+#   None
+# Returns:
+#   0: on success
+#######################################
+setup_kernel_modules() {
+  ### Entropy collection improvements
+  mkdir -p "${TARGET}/usr/lib/modules-load.d"
+  cat << EOF >| "${TARGET}/usr/lib/modules-load.d/30_security-misc.conf"
+## The jitterentropy_rng kernel module provides a reliable and hardware-independent source of cryptographic entropy by measuring
+## minute variations in CPU execution timing (jitter). These microsecond-level differences are unpredictable and rooted in
+## physical randomness, making them suitable for high-quality entropy generation. Unlike other RNG methods that rely on hardware
+## features like TPMs or Intel's RDRAND, which may not be available or trusted, jitterentropy_rng works across all platforms,
+## including virtual machines and air-gapped systems. It is compliant with NIST SP 800-90B and BSI TR-02102-4, ensuring secure
+## entropy even during early boot stages, such as in initramfs or before full userland is available. It is the most secure,
+## standards-compliant, and universally applicable entropy source for hardened Linux environments.
+## https://www.whonix.org/wiki/Dev/Entropy
+## https://bugs.debian.org/cgi-bin/bugreport.cgi?bug=927972
+## https://forums.whonix.org/t/jitterentropy-rngd/7204
+jitterentropy_rng
+EOF
+  chmod 0644 "${TARGET}/usr/lib/modules-load.d/30_security-misc.conf"
+  do_log "info" "true" "Installed: '/usr/lib/modules-load.d/30_security-misc.conf'."
+  return 0
+}
+
+#######################################
+# Blacklist some kind of potential hazardous modules via '/etc/modprobe.d/0000_ciss_debian_installer.conf'.
+# Globals:
+#   TARGET
+#   VAR_SETUP_PATH
+# Arguments:
+#   None
+# Returns:
+#   0: on success
+#######################################
+setup_modprobe() {
+ install -D -m 0755 -o root -g root "${VAR_SETUP_PATH}/includes/etc/modprobe.d/0000_ciss_debian_installer.cnf" \
+    "${TARGET}/etc/modprobe.d/0000_ciss_debian_installer.conf"
+  do_log "info" "true" "Installed: '/etc/modprobe.d/0000_ciss_debian_installer.conf'."
+  return 0
+}
+# vim: number et ts=2 sw=2 sts=2 ai tw=128 ft=sh