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Wipe LUKS Disk Encryption Key for Root Disk from RAM during Shutdown to defeat Cold Boot Attacks #1858

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Wipe LUKS Disk Encryption Key for Root Disk from RAM during Shutdown to defeat Cold Boot Attacks #1858

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Wipe LUKS Disk Encryption Key for Root Disk from RAM during Shutdown …
zephyr1x Jun 29, 2022
9baf4af
Create README.md
friedy10 Jun 29, 2022
48ac02c
Update README.md
friedy10 Jun 29, 2022
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4 changes: 4 additions & 0 deletions modules.d/40sdmem/README.md
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### Make sure sdmem is part of the initramfs
sudo apt-get install secure-delete

sudo dracut --include /usr/bin/sdmem /bin/sdmem --force
19 changes: 19 additions & 0 deletions modules.d/40sdmem/module-setup.sh
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#!/bin/bash
# -*- mode: shell-script; indent-tabs-mode: nil; sh-basic-offset: 4; -*-
# ex: ts=8 sw=4 sts=4 et filetype=sh
check() {
return 0
}

depends() {
return 0
}

install() {
inst_hook shutdown 40 "$moddir/wipe.sh"
}

installkernel() {
return 0
}

5 changes: 5 additions & 0 deletions modules.d/40sdmem/wipe.sh
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echo "Checking for mounted disks..."
dmsetup ls --target crypt
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You should probably depend on this properly.

echo "WIPE RAM!"
/bin/sdmem -f
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This as well.

echo "WIPE DONE!"