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Post-Quantum Cryptography: The First Steps


This article was prepared in cooperation with Microsec Ltd. Check out their blog for more interesting readings!

In a previous post, we discussed how the possibility of quantum attacks will affect the security of currently used cryptographic methods. As we saw, the post quantum security level of symmetric key methods including block ciphers and hash functions can reach the classical security level after doubling the key length. At the same time, we need alternative solutions instead of the ubiquitously used public key cryptosystems that are known to be breakable with scalable quantum computers. In this post, we comment on the crypto aspect of a recent breakthrough in quantum computing and briefly introduce the most important standardization effort of the post-quantum transition.

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Gépi Tanulás & Személyes Adatok Védelme

Ez a blogposzt az utolsó egy három részes sorozatból mely a gépi tanulás adatvédelmi kockázatairól kíván közérthető nyelven egy átfogó képet nyújtani. Az első egy bevezető volt a gépi tanulás világába, a második a létező támadásokat ölelte át. Ebben a záró részben a lehetséges védekezéseket mutatjuk be.

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Gépi Tanulás & Személyes Adatok Támadása

Ez a blogposzt a második egy három részes sorozatból mely a gépi tanulás adatvédelmi kockázatairól kíván közérthető nyelven egy átfogó képet nyújtani. Az első egy bevezető volt a gépi tanulás világába, ez a létező támadásait öleli át, míg az utolsó rész a lehetséges védekezéseket mutatja majd be.

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Gépi Tanulás

Ez a blogposzt az első egy három részes sorozatból mely a gépi tanulás adatvédelmi kockázatairól kíván közérthető nyelven egy átfogó képet nyújtani. Ez az első egy bevezető a gépi tanulás világába. A következő a létező támadásokat fogja átölelni, míg az utolsó záró rész a lehetséges védekezéseket mutatja majd be.

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c0r3dump @ VolgaCTF

VolgaCTF is one of the largest hacker competitions of the Russian Federation. This year, our one-year-old hacker team, c0r3dump, successfully qualified for the VolgaCTF Final by achieving the 16th place in the qualification round in March. The 9th VolgaCTF Final was held in Holiday Inn, Samara between September 17 (Tuesday) and September 20 (Friday). 19 teams were competing in the final, 3 Austrian, 1 Vietnamese, 14 Russian and 1 Hungarian. This was the first CTF final of “c0r3dump”.

c0r3dump team

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Post-Quantum Cryptography: What and Why Needs to be Changed Soon?


This article was prepared in cooperation with Microsec Ltd. Check out their blog for more interesting readings!

In this post, we explain the impact of prospective quantum computers on current implementations of cryptographic primitives, including digital signatures. Continue reading Post-Quantum Cryptography: What and Why Needs to be Changed Soon?

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Certificate Transparency – the current landscape in Hungary

This blog post was written by Márton Horváth who worked on implementing a monitor for Certificate Transparency logs in the context of his student semester project. As a proof-of-concept, he used the monitor he created to collect information about logged certificates issued in Hungary or issued to Hungarian web sites. This blog post contains the main findings of the analysis of those certificates. Continue reading Certificate Transparency – the current landscape in Hungary

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Enabling WiFi and converting the Raspberry Pi into a WiFi AP

This blog post, written by Márton Juhász, is the fifth in a series of blog posts on transforming the Raspberry Pi into a security enhanced IoT platform. This post specifically will explain how to convert the Raspberry Pi into a WiFi access point such that it can perform some gateway-like functionality. First, we describe how to enable WiFi and then how to enable other software components to make the Pi an access point. Continue reading Enabling WiFi and converting the Raspberry Pi into a WiFi AP

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OS hardening on the Raspberry Pi

This blog post, written by Márton Juhász, is the fourth in a series of blog posts on transforming the Raspberry Pi into a security enhanced IoT platform. Previous posts discussed building a custom Linux system with Buildroot, installing OP-TEE, and verified boot on the Raspberry Pi. This post will describe some OS hardening options you can use to reduce the attacks surface. Continue reading OS hardening on the Raspberry Pi