V8.13.536.2025.12.04

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

.gitea/workflows/generate_PRIVATE_trixie_1.yaml

@@ -183,6 +183,7 @@ jobs:
           install -m 0600 /dev/null /dev/shm/cdlb_secrets/id_2025_ed25519_ciss_primordial.pub
           install -m 0600 /dev/null /dev/shm/cdlb_secrets/keys.txt
           install -m 0600 /dev/null /dev/shm/cdlb_secrets/luks.txt
+          install -m 0600 /dev/null /dev/shm/cdlb_secrets/signing_ca.asc
           install -m 0600 /dev/null /dev/shm/cdlb_secrets/signing_key.asc
           install -m 0600 /dev/null /dev/shm/cdlb_secrets/signing_key_pass.txt
 
@@ -196,6 +197,7 @@ jobs:
           echo "${{ secrets.CISS_PRIMORDIAL_PUBLIC }}"            >| /dev/shm/cdlb_secrets/id_2025_ed25519_ciss_primordial.pub
           echo "${{ secrets.CISS_PHYS_AGE }}"                     >| /dev/shm/cdlb_secrets/keys.txt
           echo "${{ secrets.CISS_PHYS_LUKS }}"                    >| /dev/shm/cdlb_secrets/luks.txt
+          echo "${{ secrets.PGP_CISS_CA_PUBLIC_KEY }}"            >| /dev/shm/cdlb_secrets/signing_ca.asc
           echo "${{ secrets.PGP_MSW_PRIVATE_SIGNING_KEY }}"       >| /dev/shm/cdlb_secrets/signing_key.asc
           echo "${{ secrets.PGP_MSW_PRIVATE_SIGNING_KEY_PASS }}"  >| /dev/shm/cdlb_secrets/signing_key_pass.txt
 
@@ -205,16 +207,19 @@ jobs:
           chmod 0700 ciss_live_builder.sh
           timestamp=$(date -u +"%Y_%m_%dT%H_%M_%SZ")
           ### Change "--autobuild=" to the specific kernel version you need: '6.16.3+deb13-amd64'.
+          chmod 0400 /dev/shm/cdlb_secrets/*
           ./ciss_live_builder.sh \
             --architecture amd64 \
             --autobuild=6.17.8+deb13-amd64 \
             --build-directory /opt/cdlb \
             --cdi \
+            --change-splash hexagon \
             --control "${timestamp}" \
             --jump-host ${{ secrets.CISS_DLB_JUMP_HOSTS_1 }} \
             --key_age=keys.txt \
             --key_luks=luks.txt \
             --root-password-file /dev/shm/cdlb_secrets/password.txt \
+            --signing_ca=signing_ca.asc \
             --signing_key_fpr=${{ secrets.PGP_MSW_PRIVATE_SIGNING_KEY_FPR }} \
             --signing_key_pass=signing_key_pass.txt \
             --signing_key=signing_key.asc \

README.md

@@ -30,7 +30,7 @@ include_toc: true
 **Build**: V8.13.536.2025.12.04<br>
 
 **CISS.debian.live.builder — First of its own.**<br>
-**World-class CIA designed, handcrafted and powered by Centurion Intelligence Consulting Agency.**
+**World-class CIA: Designed, handcrafted and powered by Centurion Intelligence Consulting Agency.**
 
 Developed and maintained as a one-man, security-driven engineering effort since 2024, **CISS.debian.live.builder** is designed 
 to serve as a reference implementation for hardened, image-based Debian deployments.
@@ -58,6 +58,15 @@ validation is enforced in a fail-closed manner: zones with invalid or broken sig
 silently downgraded. Multicast name resolution via ``mDNS`` and ``LLMNR`` is disabled globally to avoid unintended name leakage
 and spoofing surfaces.
 
+Internally, the builder employs a dedicated secret-handling pipeline backed by a tmpfs-only secrets directory
+(`/dev/shm/cdlb_secrets`). Sensitive material such as root passwords, SSH keys, and signing keys never appears on the command
+line, is guarded by strict `0400 root:root` permissions, and any symlink inside the secret path is treated as a hard failure
+that aborts the run. Critical code paths temporarily disable Bash xtrace so that credentials never leak into debug logs, and
+transient secret files are shredded (`shred -fzu`) as soon as they are no longer needed. GNUPG homes used for signing are
+wiped, unencrypted chroot artifacts and includes are removed after `lb build`, and the final artifact is reduced to the
+encrypted SquashFS inside the LUKS2 container. At runtime, LUKS passphrases in the live ISO and installer are transported via
+named pipes inside the initramfs instead of process arguments, further minimizing exposure in process listings.
+
 Check out more leading world-class services powered by Centurion Intelligence Consulting Agency:
 * [CenturionDNS Resolver](https://eddns.eu/)
 * [CenturionDNS Blocklist](https://dns.eddns.eu/blocklists/centurion_titanium_ultimate.txt)