Two Brothers Have Set Up a Drug Empire on the Dark WebByBill Toulas-January 18 2020.777 The Fbi arrested two Californian brothers who acquired money by selling drugs on the Dark Web.A Simple Guide to Cryptographic Protocols
BySydney Butler-July 21, 2018.778 Neither are they simply a feature of the technology. The term protocol applies to how things are done officially. It’s a series of routines and acts of laws that ensure everything goes smoothly. Especially in the computer world when it comes to network protocols, different systems allow to talk to each other. The most significant when it comes to the network is the Tcp / Ip or Transmission Control Protocol / Internet Protocol. This ensures that any two devices on the network will connect “shake hands” and communicate with each other.
In a Cryptographic Protocol, what?
.779 To get a little better understanding of cryptographic protocols, it helps to know what they actually do. Although not all cryptographic protocols have exactly the same scope and function, some of these features will often be included: Authentication Encryption Non-repudiation There is much more to it than that, but these are some of the most important concepts for our purposes. Explained in an untechnical way. Let’s take a look at each in turn.
.780 In a cryptographic context, key agreement refers to two entities that wish to communicate securely and that need to generate a cryptographic key to do so. Nevertheless the goal must be something that neither of them can forecast up front. Therefore information provided by both parties is used to produce a key that can not regulate the exact form of either. This is in contrast to a key exchange where the key is created by one party and sent to the other but it is much simpler. It does mean, though, that you need a way to get that key to the other party without a third party intercepting this. Trust the key can be encrypted. But this just means you need to think about two buttons. Main agreement is one way the problem could be solved if a main distribution has been solved. Another is using encryption with public key. Here each party has a key pair consisting of a private and a public key. Community keys for all to see can be sent out. However, the respective private key can only decrypt anything that they encrypt.
Authentication
.781 Using encryption, one thing is to protect the actual data between two parties; another is to make sure that both parties are who they say. Of course the essence of a cryptographic protocol is the actual encryption algorithm it uses. This is a pretty big subject and we have articles explaining all encryptionalgorithms that are used elsewhere to enforce it. The purpose of using a special method to decode a plain message into a coded form is to cover it for brief encryption. The only way to reverse this cycle is to either find or steal a flaw in the encryption process that they consider to be crucial. From time to time, bugs are discovered which means that a newer algorithm has to be used. It will take millions of years to guess the key by brute force with current technology, and protection in key exchange protocols will minimize the stealing keys. Modern encryption in general is pretty airtight!
Non-repudiation In discussions about digital cryptography, you will often see the word non-repudiation coming up. What is that meaning? To repudiate something is to deny something’s real. To dismiss it outright. Every protocol to cryptography must provide non-repudiation. This must, in other words, be designed in such a way that no party can later deny signing or sending a message. Speak of it like this. You sign a contract but then you say you didn’t really want to. And you deny that you own the signature and you were the one to make it. You can not repudiate your signature, though. Two credible testimonials have seen you do it. So this form of signing gives non-repudiation. The main forms non-repudiation is being offered these days are public key pairs checked by digital signatures and certificates. This approach has held up reasonably well so far.
Ssl (secure socket layer) and Tls (transport layer safety) are two of the most commonly used and best-known protocols. Both protocols have the primary function of providing authentication and data encryption between network devices such as servers and PCs. The older protocol is Ssl. It was developed back in 1995 by a company named Netscape. Which isn’t long after the World Wide Web itself started. Let’s continue with Ssl 2.0. The first never made it to a release by the press. Version 3.0 was released in 1996, after patching several bugs. It lasted until it was released for replacement in 1999 when Tls. Perhaps no one should use Ssl today. Not only is there a risk this old protocol is unsafe but it’s just slow as well. That would be the reasonable choice, at least. There are of course still plenty of web servers that run Ssl out there. Disabling support for Ssl inside your browser is a good idea. Let it only link to sites in Tls.
Cryptographic protocols are bringing order into the digital encryption world. Without some universally accepted various encryption methods would simply not work. Hundreds of bespoke applications will bloat browsers. So we have to be grateful that there’s enough standardization in the wild west of the web to enable seamless secure communication. For them, there might not be a digital Internet. Of course the protocols we use today are constantly under attack. Criminals and police agents alike. Scientists who try weaknesses before the bad guys do. It was the Poodle attack for example that made Ssl 3.0 unsuitable for defense. Even if configured incorrectly Tls 1.2 is open. However the latest version solves the problem. The today’s protocols will inevitably ultimately be overcome. But the moment this happens, there will be a younger, smarter one waiting. And not everyone needs to know what context protocol functions. They are still a fascinating and obviously very important topic.BySydney Butler-July 21, 2018.778 Neither are they simply a feature of the technology. The term protocol applies to how things are done officially. It’s a series of routines and acts of laws that ensure everything goes smoothly. Especially in the computer world when it comes to network protocols, different systems allow to talk to each other. The most significant when it comes to the network is the Tcp / Ip or Transmission Control Protocol / Internet Protocol. This ensures that any two devices on the network will connect “shake hands” and communicate with each other.
In a Cryptographic Protocol, what?
.779 To get a little better understanding of cryptographic protocols, it helps to know what they actually do. Although not all cryptographic protocols have exactly the same scope and function, some of these features will often be included: Authentication Encryption Non-repudiation There is much more to it than that, but these are some of the most important concepts for our purposes. Explained in an untechnical way. Let’s take a look at each in turn.
.780 In a cryptographic context, key agreement refers to two entities that wish to communicate securely and that need to generate a cryptographic key to do so. Nevertheless the goal must be something that neither of them can forecast up front. Therefore information provided by both parties is used to produce a key that can not regulate the exact form of either. This is in contrast to a key exchange where the key is created by one party and sent to the other but it is much simpler. It does mean, though, that you need a way to get that key to the other party without a third party intercepting this. Trust the key can be encrypted. But this just means you need to think about two buttons. Main agreement is one way the problem could be solved if a main distribution has been solved. Another is using encryption with public key. Here each party has a key pair consisting of a private and a public key. Community keys for all to see can be sent out. However, the respective private key can only decrypt anything that they encrypt.
Authentication
.781 Using encryption, one thing is to protect the actual data between two parties; another is to make sure that both parties are who they say. Of course the essence of a cryptographic protocol is the actual encryption algorithm it uses. This is a pretty big subject and we have articles explaining all encryptionalgorithms that are used elsewhere to enforce it. The purpose of using a special method to decode a plain message into a coded form is to cover it for brief encryption. The only way to reverse this cycle is to either find or steal a flaw in the encryption process that they consider to be crucial. From time to time, bugs are discovered which means that a newer algorithm has to be used. It will take millions of years to guess the key by brute force with current technology, and protection in key exchange protocols will minimize the stealing keys. Modern encryption in general is pretty airtight!
Non-repudiation In discussions about digital cryptography, you will often see the word non-repudiation coming up. What is that meaning? To repudiate something is to deny something’s real. To dismiss it outright. Every protocol to cryptography must provide non-repudiation. This must, in other words, be designed in such a way that no party can later deny signing or sending a message. Speak of it like this. You sign a contract but then you say you didn’t really want to. And you deny that you own the signature and you were the one to make it. You can not repudiate your signature, though. Two credible testimonials have seen you do it. So this form of signing gives non-repudiation. The main forms non-repudiation is being offered these days are public key pairs checked by digital signatures and certificates. This approach has held up reasonably well so far.
Ssl (secure socket layer) and Tls (transport layer safety) are two of the most commonly used and best-known protocols. Both protocols have the primary function of providing authentication and data encryption between network devices such as servers and PCs. The older protocol is Ssl. It was developed back in 1995 by a company named Netscape. Which isn’t long after the World Wide Web itself started. Let’s continue with Ssl 2.0. The first never made it to a release by the press. Version 3.0 was released in 1996, after patching several bugs. It lasted until it was released for replacement in 1999 when Tls. Perhaps no one should use Ssl today. Not only is there a risk this old protocol is unsafe but it’s just slow as well. That would be the reasonable choice, at least. There are of course still plenty of web servers that run Ssl out there. Disabling support for Ssl inside your browser is a good idea. Let it only link to sites in Tls.
Cryptographic protocols are bringing order into the digital encryption world. Without some universally accepted various encryption methods would simply not work. Hundreds of bespoke applications will bloat browsers. So we have to be grateful that there’s enough standardization in the wild west of the web to enable seamless secure communication. For them, there might not be a digital Internet. Of course the protocols we use today are constantly under attack. Criminals and police agents alike. Scientists who try weaknesses before the bad guys do. It was the Poodle attack for example that made Ssl 3.0 unsuitable for defense. Even if configured incorrectly Tls 1.2 is open. However the latest version solves the problem. The today’s protocols will inevitably ultimately be overcome. But the moment this happens, there will be a younger, smarter one waiting. And not everyone needs to know what context protocol functions. They are still a fascinating and obviously very important topic.