Cryptography


Padding Oracle Crypto Research Prompts Confusion, Dissenting Opinions on Severity

Few things tend to spark debates and controversy in the security community like a new piece of cryptographic research. The paper by a group of academic researchers on an improvement to a padding oracle attack on certain hardware security tokens publicized this week is no different, with RSA officials saying the research contributes nothing in the way of breaking new ground. Cryptographers beg to differ.


A group of international academic researchers has made a major advance in the efficiency of a known cryptographic attack on some kinds of crypto hardware, enabling them to extract sensitive keys from tokens such as RSA SecurID and Aladdin eToken devices within 20 minutes. However, experts say that the attack does not represent a catastrophic failure for the tokens.

This week’s revelations about leaks of user passwords from the professional networking site LinkedIn, dating Web site eHarmony.com and music site Last.fm suggest that even tech-savvy firms are slow to accept that hashes -a once-reliable technology for storing data online – now offer scant protection for sensitive data.

The past week has brought to light more revelations about the mysterious Flame (or sKyWIper) worm that was first identified at the end of May. Among them: the eye-popping admission from Microsoft that the malware’s authors found a way to use that company’s Windows Update feature to distribute the malware.