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Linux kernel hacker and maintainer etc.

OpenPGP: 3AB05486C7752FE1

Jarkko Sakkinen

I created a cheat sheet of my accumulated custom shortcuts in vim using typst. i'm going to maintain this and capping custom shortcuts to fit into single A4 helps to make sure that things don't get too complicated :-)
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Jarkko Sakkinen

going to submit a talk next year to the first linux security summit cfp :-)
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@gregkh very cool! :-)
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Jarkko Sakkinen

I sometimes wish that I'd see more "Skilled Skateboarders" than "Skilled Board Members" at LinkedIn. World would probably be a better place if that would ever happen.
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Jarkko Sakkinen

tpm2sh 0.15.0 compiles the policy commands to the DER payload.

Crypto has been migrated to OpenSSL for sake of allowing to be (or delegating the policy of being) FIPS compatible, and making crypto patchable.

#linux #kernel #tpm #openssl #rustlang
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Jarkko Sakkinen

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@oleksandr i'm planning to put abstract to cfp of linux security summit about the tool and stack. there's no other tool for creating, processing and converting TPM keys for kernel consumption.
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Jarkko Sakkinen

hooray 10K downloads: https://crates.io/crates/tpm2sh
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Jarkko Sakkinen

Edited 1 month ago
Decomposition time now that tpm2sh has matured to a usable peace of software.

First off, here's basic set of cryptographic routines defined in the TCG TPM 2.0 architecture specification:

https://crates.io/crates/tpm2-crypto

They've been tested equally in client and emulator implementation.

More to come as I dislike the size of current tpm2sh code base (7 KSLOC).

#linux #tpm #rustlang
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@notbobbytables these are weird times. people PAY to get pwnd (as a service).
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@jwildeboer i'm sorry :-) please don't let ruin your joy! i'm just an idiot on a keyboard :D
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@jwildeboer plus everyone loves to hate steinberg (for a good reason) how they've e.g., managed vst2 with an army lawyers.
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@jwildeboer they are a bit late as most popular daws and best plugins are supporting clap.

i guess that's why they did this :-) vst is somewhat obsolete compared to cool modulation features etc. offered by clap.
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Jarkko Sakkinen

Yet another reason for improving DSO support in Rust would be to give people freedom of choice to license with LGPL.
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Jarkko Sakkinen

https://crates.io/crates/tpm2sh/0.13.0

With the tpm2sh 0.13.0 the goals that I set when I started working on this in August are fulfilled:

1. First class handling of TPMKey ASN.1 format, and import capabilities from the most common formats for ECC and RSA keys (PKCS#1, PCKS#8 and SEC1).
2. Meaningful and "human" way to describe key policies (e.g., "(pcr(sha256:16) or pcr(sha256:7)) and secret(tpm:81000001)").
3. Intutive interface to browse the TPM memory and download EK certificates.
4. Virtual TPM address space with transparent context handling and clean up of stale contexts (from earlier power cycles).

In other words, tpm2sh addresses now the immediate kernel hacking needs for TPM driver itself, Linux keyring, IMA etc. One additional feature I'm going to finish off at some point is parameter encryption, which won't take long tas tpm2sh already creates unsalted and unbound HMAC sessions for different tasks.

Patches are always welcome, and can be sent to tpmprotocol@lists.linux.dev ;-)

#linux #kernel #tpm #rustlang
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