Jan 28 · 31 min read · The b3dr0ck challenge takes us to Bedrock, where Barney Rubble is setting up the ABC (Abbadabba Broadcasting Company) webserver and struggling with TLS certificate configuration. This beginner-to-intermediate level challenge focuses on certificate-ba...
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Nov 6, 2025 · 7 min read · In cryptography, ensuring constant-time execution is a critical defense against timing side-channel attacks. An implementation is considered constant-time if its execution time and memory access patterns are independent of secret-valued inputs. Failu...
Join discussionOct 3, 2025 · 3 min read · Es posible crear un certificado digital que implemente algoritmos PQC (Post-Quantum Crypto). Vamos a demostrar como es posible generar un par de llaves ML-DSA y utilizarlas dentro de un certificado X.509, ya sea self-signed o firmado por un CA privad...
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Sep 26, 2025 · 6 min read · openssl is a versatile tool for managing cryptographic operations, including generating keys, creating certificates, and securing communications. It supports SSL/TLS protocols, digital signatures, encryption, and more. Generate a Self-Signed Certific...
Join discussionSep 7, 2025 · 2 min read · Problem Statement Today’s challenge involved an expired SSL certificate on an Nginx server serving a “Hello, World!” page over HTTPS. The goal: generate a new certificate with identical issuer and subject details, ensuring seamless security and confi...
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Jul 2, 2025 · 3 min read · In today’s world, keeping data safe is more important than ever. Public-key encryption is one of the basic building blocks for data security. It lets two people share secret messages over an open network without ever sharing a password. We’ll work in...
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May 2, 2025 · 4 min read · Learn how to convert PFX files to .CRT and .KEY formats using OpenSSL in this easy guide. TL;DR — This 7-minute guide will help you convert your .pfx file into a .crt or .key file from the encrypted key using OpenSSL Commands for free. I kept 3 minu...
Join discussionMar 21, 2025 · 5 min read · Heavy title, right? Then before setting the context for this article, I will break down the title first. And we will start with CMake. What is CMake? As you know, for a compiled language, we need compilers to compile them into machine code which then...
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Jan 4, 2025 · 3 min read · Alright alright, before you all start bashing me left and right for the title, let me clarify something: building OpenSSL from source code on Windows may not be straightforward for first-timers, but once you get the hang of it, it's actually quite si...
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Dec 21, 2024 · 3 min read · What is a Man in the Middle Attack? This is an attack where an advanced persistent threats (attackers) insert themselves in between a communication channel to steal data. They eavesdrop on communication between trusted parties or impersonate either o...
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