SKShubham Kumarinchmodshubham.hashnode.dev·Nov 6, 2025 · 7 min readHow LibOQS Uses Valgrind to Hunt for Constant-Time Leaks?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...00
SKShubham Kumarinchmodshubham.hashnode.dev·Oct 26, 2025 · 13 min readConstant Time Implementation for CryptographyLet’s start the story with how constant time came into light in late 1996, when Paul Kocher published a novel attack on RSA, specifically on the RSA implementation, that extracted information on the private key by simply measuring the time taken by t...00
SKShubham Kumarinchmodshubham.hashnode.dev·Jul 1, 2025 · 15 min readUnderstanding IPsec: How Internet Security WorksHello there, crypto commandos! Remember those old-school spy gadgets from James Bond movies where everything needed a secret handshake and decoder ring? Well, today we’re diving into IPsec — the protocol suite that basically gave every packet on the ...00
SKShubham Kumarinchmodshubham.hashnode.dev·Jun 26, 2025 · 15 min readQUIC: The Future of Internet TransportHello again, my fellow digital warriors! If you thought my last blog on TLS/SSL was intense, well, grab your favorite beverage because today we’re diving into something that’s reshaping how the entire internet works. Yes, I’m talking about QUIC — the...00
SKShubham Kumarinchmodshubham.hashnode.dev·Jun 22, 2025 · 5 min readTLS/SSL ConnectionHi bugs! Currently, I’m working around security protocols and decided to start a blog series to revive my knowledge of the sacred art (cryptography) of protecting our digital world from the darkness of evil spirits (yes, I’m talking about attackers)....00
