algorithms – Page 3 – SSL and internet security news

Frequent Password Changes Is a Bad Security Idea

August 5, 2016 infossl

academicpapers, algorithms, passwords, Security technology, securitypolicies

I’ve been saying for years that it’s bad security advice, that it encourages poor passwords. Lorrie Cranor, now the FTC’s chief technologist, agrees: By studying the data, the researchers identified common techniques account holders used when they were required to change passwords. A password like “tarheels#1”, for instance (excluding the quotation marks) frequently became “tArheels#1” … Read More “Frequent Password Changes Is a Bad Security Idea” »

The IDEA Encryption Algorithm with a 128-bit Block Length

January 27, 2015 infossl

algorithms, cryptanalysis, cryptography, encryption, Security technology

Here’s an IDEA-variant with a 128-bit block length. While I think it’s a great idea to bring IDEA up to a modern block length, the paper has none of the cryptanalysis behind it that IDEA had. If nothing else, I would have expected more than eight rounds. If anyone wants to practice differential and linear … Read More “The IDEA Encryption Algorithm with a 128-bit Block Length” »

Quantum Attack on Public-Key Algorithm

December 4, 2014 infossl

academicpapers, algorithms, cryptanalysis, cryptography, quantumcomputing, quantumcryptography, Security technology

This talk (and paper) describe a lattice-based public-key algorithm called Soliloquy developed by GCHQ, and a quantum-computer attack on it. News article. Powered by WPeMatico

The Security Underpinnnings of Cryptography

November 24, 2014 infossl

academicpapers, algorithms, cryptography, Security technology, securityengineering

Nice article on some of the security assumptions we rely on in cryptographic algorithms. Powered by WPeMatico