For an embedded device, TLS certificate validation presents some unique challenges. The obvious problem is the limited processing power, but the real issue is that a typical root CA bundle is well…| rya.nc
Während viele Organisationen noch auf die Verfügbarkeit leistungsfähiger Quantencomputer warten, läuft das Risiko längst im Hintergrund: Verschlüsselte Daten werden bereits heute massenhaft gestohlen und für den späteren Zugriff archiviert. Das „Harvest-Now-Decrypt-Later“-Prinzip bedroht die Datensicherheit langfristig und könnte zum größten Datenschutzproblem der kommenden Dekade werden. Die Widersprüchlichkeit in den Prognosen zur Einsatzfähigkeit von Quantencomputern ist e...| B2B Cyber Security
This is an article in a series on Cryptography for the Everyday Developer. Follow along to learn the basics of modern cryptography and encryption. Modern cryptography relies heavily on number theory. One of the simplest but most important tools in the number theorist’s toolkit is the Euclidean algorithm. This algorithm, and its extension, the extended Euclidean algorithm, form the basis for practical cryptographic operations such as modular inversion. This blog post walks through both alg...| Kevin Sookocheff
While SOC optimization, NextGen SIEM, cloud and cybersecurity workforce challenges got ample attention at this year’s conference, it was the topic of AI, not surprisingly, that was at the center of most conversations.| MixMode
BlackNevas has been continuously launching ransomware attacks against companies in various industries and countries, including South Korea. This post provides a technical analysis on the characteristics, encryption methods, and reasons why BlackNevas encrypts files in a way that makes them impossible to decrypt. It is hoped that this post will provide insights for defending against […]| ASEC
Last week, a backdoor was discovered in xz-utils. The backdoor processes commands sent using RSA public keys as a covert channel. In order to prevent anyone else from using the backdoor, the threat actor implemented a cryptographic signature check on the payload. I have seen a number of people claim that this would necessarily result in an obviously invalid RSA public key, or at least one with no corresponding private key. This is incorrect, and someone nerd sniped me into proving it.| rya.nc
Our cybersecurity experts Hally Wax, Brendan Hughes and Madison Pappas share insider strategies for making your brand stand out at RSAC 2025.| RH Strategic
In my last blog post I wrote a little crash course on RSA and how it works without looking into any specific language implementations. Today I'd like to explore the native implementations of .NET and the new RSACng class which has been introduced with .NET Framework 4.6.| Dusted Codes
With the rapid growth of the internet and the vast business which is handled over the web it is not surprising that security has become an inevitable topic for any software developer these days.| Dusted Codes
Join DirectDefense at RSA Conference 2024 in San Fransisco DirectDefense will be present at RSA Conference this year, engaging with customers to enhance| DirectDefense
RSA is a public-key encryption algorithm that uses an asymmetric encryption algorithm to encrypt data. RSA is the primary method of encrypting data-in-motion.| Encryption Consulting
The goal of cryptography is to ensure data cannot be compromised & that data is authentic, which can be accomplished through encryption and digital signing.| Encryption Consulting
The major difference between the two types of encryption is, symmetric encryption uses 1 key, whereas asymmetric encryption uses 2 keys for data transfer.| Encryption Consulting
I recently had solar panels and a battery storage system from GivEnergy installed at my house. A major selling point for me was that they have a local network API which can be used to monitor and…| rya.nc
I have created a new OpenPGP key and will be transitioning away from my old key. If you have signed my old key, I would appreciate signatures on my new key as well. I have created a transition statement that Continue reading OpenPGP 2019 Key Transition Statement→| Simon Josefsson's blog
I have created a new OpenPGP key 54265e8c and will be transitioning away from my old key. If you have signed my old key, I would appreciate signatures on my new key as well. I have created a transition statement Continue reading OpenPGP Key Transition Statement→| Simon Josefsson's blog
| The Grumpy Troll: The Grumpy Troll
If you’re like most people, there’s a good chance that it’s been years since you’ve sent an email that wasn’t cryptographically signed. You don’t use PGP, you say? Well, even if you are…| rya.nc
Sometimes hacking requires doing things that, while possible to do with some algorithm, simply aren’t supported by any existing implementation. Usually for good reason. A good example of this…| rya.nc
I only got to solve one of the three leet challenges. It was a cryptography challenge where I can brute force two parameters known to be between 0 and 1000 and then work backwards to figure out q based on a hint leaked in the output. From there, it’s simple RSA.| 0xdf hacks stuff
Let’s Encrypt (the free, automated and open certificate authority) has just announced its launch schedule. According to it, certificates will be released to the public starting from the week of September 14, 2015.| andrea.corbellini.name
I've spent the last week or so writing a plugin for my website to render LaTeX without any client-side Javascript. As a demo, I'm publishing my high-school...| ersei.net
