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v1rtu3x/README.md
Mark-Paul Tamas, Product Security Engineer. Cryptography, secure software and embedded systems. A terminal-style identity reveal and AES state illustration accompany selected merged contributions to Mbed TLS, libspdm and Zephyr.

01 / profile

I'm Mark-Paul Tamas, a Product Security Engineer working across security architecture, threat modeling and risk assessment, vulnerability assessment, and secure software engineering. My professional experience spans automotive, industrial/OT, and medical-device security contexts.

I'm particularly interested in where architecture meets implementation: cryptographic key handling, protocol state management, embedded software, and reproducible security testing.

02 / merged upstream work

Mbed TLS / TF-PSA-Crypto · cryptographic key handling
Fixed missing zeroization of sensitive shared-secret material in psa_key_agreement() across return paths.
Merged fix · 1.1 backport

DMTF / libspdm · protocol security
Fixed stale peer DIGESTS and pending-request state retained by libspdm_reset_context(), including cached request data, and added regression coverage.
Merged fix

Zephyr RTOS · embedded software and testing
Added 11 regression tests for Bluetooth Host key-pool behavior and persisted-key loading. Also improved ROM_START_OFFSET defaults for Cortex-M vector-table alignment in MCUboot configurations.
Bluetooth tests · Boot configuration

03 / published research

A Comparative Entropy Analysis of BJT Avalanche Noise, SDR Noise and Algorithmic PRNGs
IEEE · 2026
Experimental analysis of physical-noise and algorithmic randomness sources.

Threat Analysis and Risk Assessment of the Takeover Request Component in Advanced Driver Assistance Systems for SAE Level 2–3
Electronics · 2026
Cybersecurity analysis of automated-driving handover functions.

Threat Analysis and Risk Assessment (TARA) of an Autonomous Emergency Braking (AEB) System
Applied Sciences · 2025
Threat modeling and risk assessment of a safety-critical automotive function.

04 / connect

LinkedIn · Merged pull requests

Static version

Pinned Loading

  1. Mbed-TLS/TF-PSA-Crypto Mbed-TLS/TF-PSA-Crypto Public

    Reference implementation of the PSA Cryptography API

    C 64 151

  2. DMTF/libspdm DMTF/libspdm Public

    DMTF's Reference Implementation of SPDM

    C 191 168

  3. zephyr zephyr Public

    Forked from zephyrproject-rtos/zephyr

    Primary Git Repository for the Zephyr Project. Zephyr is a new generation, scalable, optimized, secure RTOS for multiple hardware architectures.

    C

  4. A205-UPT/A-Comparative-Entropy-Analysis-of-BJT-Avalanche-Noise-SDR-Noise-and-Algorithmic-PRNGs A205-UPT/A-Comparative-Entropy-Analysis-of-BJT-Avalanche-Noise-SDR-Noise-and-Algorithmic-PRNGs Public

    Comparative analysis of physical noise sources and algorithmic PRNGs using LSB extraction, post-processing, and NIST SP 800-22 statistical testing.

    Jupyter Notebook