Different mechanisms are used to reach a consensus; the most popular for cryptocurrency isproof-of-work(PoW), with proof-of-stake (PoS) becoming more so because of the reduced energy consumption compared to PoW. The XRP Ledger uses a mechanism similar to proof-of-history (PoH), where a de...
52 Things: Number 27: What is the AEAD security definition for symmetric key encryption? This is the latest in a series of blog posts to address the list of '52 Things Every PhD Student Should Know' to do Cryptography: a set of questions compiled to give PhD candidates a sense of what ...
Organizations will use cryptography broadly in their environments, such as inTransport Layer SecurityandSecure Socket Shells. Typically, mission-critical communication systems will also make use of crypto-agility. Without crypto-agility, if an organization's cryptographic systems are compromised, they may ...
Indeed, as information security has become increasingly important to organizations,the role of the CISO, or chief information security officer, has become significantly more visible.Ways to systematically manage InfoSec, in the form of ISMSs, is also becoming a popular topic. (Information security i...
Running code from a Web site in your browser is a common scenario for sandboxing and code identity-based security. CAS in the CLR provides a general mechanism to sandbox code based on code identity. This is its main strength and the main scenario for its use. CAS i...
Cryptocurrency is a digital form of currency that uses cryptography to secure the processes involved in generating units, conducting transactions and verifying the exchange of currency ownership. Most modern currency is often referred to as "fiat" currency, which is regulated and produced by a governm...
A defense-in-depth information assurance strategy puts layers of redundant measures in place to defend against a vulnerability exploit or a security control failure. Like the similarly named military strategy, defense-in-depth is centered on the idea that one defense mechanism cannot catch all attack...
(currently, 6.25 BTC). This process is called “mining” and this is how new currency appears in the system. If not for this reward mechanism, nobody would have an incentive to help validate transactions and the whole system would crumble.; the underlying idea being that no attacker would ...
Until now, you could specify a KeepAliveInterval to keep the connection from staying idle, but there was no built-in mechanism to enforce that the peer is responding.The following example pings the server every 5 seconds and aborts the connection if it doesn't respond within a second....
The mining processis what you may have heard calledproof-of-work (PoW)—the work done to generate the winning hash is viewed as proof the miner validated the transactions in the block, so it's called proof-of-work. PoW is also sometimes called a consensus mechanism, but proof-of-work ...