btrfs-todo
tpm2-totp
btrfs-todo | tpm2-totp | |
---|---|---|
8 | 5 | |
18 | 149 | |
- | 7.4% | |
10.0 | 0.0 | |
over 3 years ago | about 2 months ago | |
C | ||
- | BSD 3-clause "New" or "Revised" License |
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btrfs-todo
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btrfs-cleaner high CPU utilization and severe performance issues - fyi
It should be resolved with "Tree extension V2" https://github.com/btrfs/btrfs-todo/issues/25
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How can I modify a partition, subvolume or folder to be case-insensitive?
You could open a feature request at https://github.com/btrfs/btrfs-todo/.
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ZFS vs Btrfs in 2022
Thankfully, much of the work with extent tree v2 will address most of these issues, so expect this to improve in the next year or two.
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[GIT PULL] Btrfs updates for 6.1
Pretty sure that will become possible/easier with Extent tree v2.
- Send bcachefs some love!
- Btrfs Extent Tree v2
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Btrfs Extent Tree v2 Work Progressing For Improving The File-System's On-Disk Format
For actual details: https://github.com/btrfs/btrfs-todo/issues/25
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Authenticated Boot and Disk Encryption on Linux
fscrypt support for btrfs is still being planned; see the most recent comments at https://github.com/btrfs/btrfs-todo/issues/25
tpm2-totp
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TOTP tokens on my wrist with the smartest dumb watch
You need a TPM 2.0 compatible CPU, but something like this sounds really excellent: https://github.com/tpm2-software/tpm2-totp
This means your laptop itself would be your hardware device, the TOTP secret would be stored in the TPM and theoretically impossible to steal/copy. Of course this means you will probably want a mobile device (possibly a second laptop also) as a backup.)
- Can you detect tampering in /boot without SecureBoot on Linux?
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Authenticated Boot and Disk Encryption on Linux
>But okay, you may extend my attack by saying that you exchange the motherboard between the victim and the attacker laptop, so that you don't need to replicate the chassis.
Modern computers has tamper detection and if you open them you'll need to type the BIOS password.
However, replacing the motherboard is going to replace the TPM. This is easily detectable with something like tpm2_totp in the bootchain.
https://github.com/tpm2-software/tpm2-totp
- Attest computer secure boot state to phone via time-based OTP and TPM
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Does the TPM boost secure boot security?
You could also use TOTP for a kind of remote attestation (e.g., with your phone computing TOTP). In this setup, the CPU sends the timestamp to the TPM, and it returns the TOTP value. So instead of you looking at your phone to give the TOTP to a service provider to prove that you're in possession of your phone, the computer gives you a TOTP value to prove that it's in possession (inside the TPM, sealed to the boot chain hashes) of the TOTP secret, and you use your phone to verify this. A possible weakness (short of a full-blown TPM compromise) would be to send a bunch of forged timestamps to the TPM while your computer is running and store the resulting TOTP values, then tamper with Secure Boot and emit the precomputed TOTP corresponding to the current timestamp whenever you boot up your computer. But this would require running malicious code on your compute while you're logged in with the trusted boot chain.
What are some alternatives?
heads - A minimal Linux that runs as a coreboot or LinuxBoot ROM payload to provide a secure, flexible boot environment for laptops, workstations and servers.
sbctl - :computer: :lock: :key: Secure Boot key manager
pkgbuild-linux-bcachefs - PKGBUILD for Linux with bcachefs support
mortar - Framework to join Linux's physical security bricks.
cryptboot - Encrypted boot partition manager with UEFI Secure Boot support
decrypt-otpauth-files - Decrypt files created by OTP Auth
ansitest - ansible test stuff and root/bin bash scripts for Linux / OSX admins
BangleApps - Bangle.js App Loader (and Apps)