Category: blockchain

Auto Added by WPeMatico

Presidential Candidate Andrew Yang Has Quantum Encryption Policy

Posted on By infossl
blockchain, cryptography, encryption, nationalsecuritypolicy, quantumcomputing, Security technology

At least one presidential candidate has a policy about quantum computing and encryption. It has two basic planks. One: fund quantum-resistant encryption standards. (Note: NIST is already doing this.) Two, fund quantum computing. (Unlike many far more pressing computer security problems, the market seems to be doing this on its own quite nicely.) Okay, so … Read More “Presidential Candidate Andrew Yang Has Quantum Encryption Policy” »

Blockchain and Trust

Posted on By infossl
academicpapers, bitcoin, blockchain, cryptocurrency, cryptography, essays, Security technology, trust

In his 2008 white paper that first proposed bitcoin, the anonymous Satoshi Nakamoto concluded with: “We have proposed a system for electronic transactions without relying on trust.” He was referring to blockchain, the system behind bitcoin cryptocurrency. The circumvention of trust is a great promise, but it’s just not true. Yes, bitcoin eliminates certain trusted … Read More “Blockchain and Trust” »

Friday Squid Blogging: Squid Falsely Labeled as Octopus

Posted on By infossl
blockchain, Security technology, squid, supplychain

Two New Yorkers have been charged with importing squid from Peru and then reselling it as octopus. Yet another problem that a blockchain-enabled supply-chain system won’t solve. As usual, you can also use this squid post to talk about the security stories in the news that I haven’t covered. Read my blog posting guidelines here. … Read More “Friday Squid Blogging: Squid Falsely Labeled as Octopus” »

Tracing Stolen Bitcoin

Posted on By infossl
academicpapers, bitcoin, blockchain, Security technology, theft, tracing, tracking

Ross Anderson has a really interesting paper on tracing stolen bitcoin. From a blog post: Previous attempts to track tainted coins had used either the “poison” or the “haircut” method. Suppose I open a new address and pay into it three stolen bitcoin followed by seven freshly-mined ones. Then under poison, the output is ten … Read More “Tracing Stolen Bitcoin” »

Security Vulnerabilities in Smart Contracts

Posted on By infossl
academicpapers, blockchain, Security technology, vulnerabilities

Interesting research: “Finding The Greedy, Prodigal, and Suicidal Contracts at Scale“: Abstract: Smart contracts — stateful executable objects hosted on blockchains like Ethereum — carry billions of dollars worth of coins and cannot be updated once deployed. We present a new systematic characterization of a class of trace vulnerabilities, which result from analyzing multiple invocations … Read More “Security Vulnerabilities in Smart Contracts” »