Blockchain secure communications

End-to-end encrypted communication requires the public key of the other party. This key is provided by the server you are connected to. If you want to prevent this attack, you need to verify the key with the contact for example, to call and read the verification codes. This is the only way we can be sure that we use the right keys for encryption. Our application uses an unique mechanism for key authentication that works with a modern, secure repository, where it is not possible to modify once inserted data at anytime by anybody. Such a repository is called a Blockchain database.

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Content:

• Blockchain Security Solutions
• Telefónica Tech, a global benchmark in Blockchain technology
• Multi-Layer Blockchain-Based Security Architecture for Internet of Things
• Blockchain technology could provide secure communications for robot teams
• How does blockchain security dictate blockchain implementation?
• U.S. Air Force contracts data blockchain Fluree for secure communications
• Blockchain Technology for Secure Sharing of E-Health Records
• Blockchain-Aided Access Control for Secure Communications in Ad Hoc Networks
• Blockchain in Wireless Communications and Computing: Security Threats and Applications
• Private, Secure Communication

WATCH RELATED VIDEO: Introduction to Blockchain Security Issues \u0026 Vulnerabilities - Blockchain Security Explained

Blockchain Security Solutions

Buy why? And how could blockchain impact customer communications? Blockchain is a technology that relies on a shared database or ledger to prevent fraud and guarantee validity. This contrasts with traditional transactions, which are recorded by individual organisations or businesses. With blockchain, multiple parties maintain copies of the same ledger. No individual can manipulate blockchain records, because the difference would be discovered and corrected.

The only way to defraud a blockchain hypothetically is to change every single instance of a transaction in every node of the blockchain. This is impossible, because while a fraudster was going through the complex process of hacking one node, the other ledgers would be updating, creating discrepancies which would be identified and rejected by the blockchain.

Banks, governments, businesses, programmers, lawyers — everyone can see the immense security potential of blockchain. With blockchain, no individual has ownership of the data. Blockchain is the technology that underpins bitcoin and other cryptocurrencies.

Bitcoin has been in existence since , and is accepted as a form of payment by more than , vendors. While blockchain may feel like a novel technology for communications, it has been thoroughly tested in the financial world and proven its worth.

Everledger is using blockchain to keep track of diamonds, and prevent stones that are tarnished by conflict also known as blood diamonds from entering the supply chain. And Pikcio is a secure messaging app that any organisation can use to privately communicate with their customers and stakeholders. Pikcio uses blockchain to record which messages are sent; the content of messages is not recorded in the distributed ledger, just the fact that the message was sent, when, and by whom.

Smart contracts are another potential use of blockchain tech. Smart contracts are code-based contracts that are programmed to complete certain transactions when certain conditions are met. This could be the payment of a dividend when a certain level of profit is reached, or the payment of rent at a certain date. Many different variables can be incorporated into smart contracts. The attraction is that smart contracts cannot be manipulated by anyone.

The contract will only execute when the right conditions are met. One challenge of communicating in the 21 st Century is the fragmentation of platforms. You might use Twitter but want to communicate with someone who only uses Snapchat. An organisation might want to send a message to their customers, but need to navigate a plethora of communication platforms and preferences. Blockchain technology can create authentication tokens that automatically enrol users in a chosen communication platform.

For example, if you want an amazing Snapchat story to be visible to everyone, you could, in theory, use an authentication token to make it available to anyone with the token — regardless of whether they were a Snapchat user.

One concern with blockchain is that records are shared. And the sharing aspect is the very thing that makes the technology secure. But for many organisations — and government agencies — the prospect of sharing their data across multiple servers is incompatible with their security obligations.

As we mentioned in the case of Pikcio, the solution might rest in storing only metadata in a blockchain — or it might be that a new method of obfuscating data in the blockchain is required. Blockchain technology is advancing rapidly and there are hundreds of startups exploring novel ways to put this tech to work, so we should have the answers to these questions before long.

Dismiss message and accept cookies By continuing to browse our site you are agreeing to our use of cookies. Back to Knowledge Base Blockchain: the technology set to change customer communications? What is blockchain? Other applications for blockchain Everledger is using blockchain to keep track of diamonds, and prevent stones that are tarnished by conflict also known as blood diamonds from entering the supply chain.

Blockchain and smart contracts Smart contracts are another potential use of blockchain tech. Authenticating with blockchain One challenge of communicating in the 21 st Century is the fragmentation of platforms.

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Telefónica Tech, a global benchmark in Blockchain technology

Modern cryptography exists at the intersection of the disciplines of mathematics , computer science , electrical engineering , communication science , and physics. Applications of cryptography include electronic commerce , chip-based payment cards , digital currencies , computer passwords , and military communications. Cryptography prior to the modern age was effectively synonymous with encryption , converting information from a readable state to unintelligible nonsense. The sender of an encrypted message shares the decoding technique only with intended recipients to preclude access from adversaries. The cryptography literature often uses the names Alice "A" for the sender, Bob "B" for the intended recipient, and Eve " eavesdropper " for the adversary. Modern cryptography is heavily based on mathematical theory and computer science practice; cryptographic algorithms are designed around computational hardness assumptions , making such algorithms hard to break in actual practice by any adversary. While it is theoretically possible to break into a well-designed system, it is infeasible in actual practice to do so.

Multi-Layer Blockchain-Based Security Architecture for Internet of Things

A newly announced blockchain privacy platform is seeking to bring secure communications to the next level by not only offering end-to-end encryption but full protection of metadata. While popular secure messaging applications such as Facebook-owned WhatsApp have championed the concept of private browsing via end-to-end encryption, metadata has so far remained relatively ignored. Dubbed Elixxir , the blockchain privacy platform is designed to tackle this issue. The blockchain privacy platform advancing secure communications Elixxir is designed to improve on communications platforms built solely on end-to-end encryption by also obscuring metadata. This means that outside parties can not only not see the contents of the messages sent over the platform, but cannot see who they are sent to and from, when they were sent or where from. The technology is built on the Elixxir blockchain invented by Chaum. It uses precomputation to create a mix network framework before the message is sent, which effectively obscures its metadata as it is being transmitted. While the technology has been running in alpha for some time, the news today sees it transition to a BetaNet that is supported by node operators across six different continents.

Blockchain technology could provide secure communications for robot teams

Communication systems are key to modern economies. Communication systems can often suffer from data loss. Valuable records of communications can be unrecoverable. This occurs when information is not stored securely and cannot be retrieved. Privacy is a major priority in communication systems.

How does blockchain security dictate blockchain implementation?

Matrix is an open source project that publishes the Matrix open standard for secure, decentralised, real-time communication, and its Apache licensed reference implementations. Maintained by the non-profit Matrix. As of June , Matrix is out of beta , and the protocol is fully suitable for production usage. Conversations are replicated over all the servers participating in them, meaning there are no single point of control or failure. You can reach any other user in the global Matrix ecosystem of over 40M users, even including those on other networks via bridges.

U.S. Air Force contracts data blockchain Fluree for secure communications

The Department of Defense is looking into blockchain technology as a way to modernize its approach to cryptography and cybersecurity, according to a report released this month. Uses of blockchain could include securing communications between military units in the field and their headquarters, and allowing intelligence officers to safely transmit sensitive information to the Pentagon, according to the DoD Information Resource Management Strategic Plan FY , released on July Specifically, the report notes that the Defense Advanced Research Projects Agency DARPA has started to experiment with blockchain to create a secure communications system in which messages can be verified through a decentralized ledger—the technology blockchain is built on. DARPA is attracted to three aspects of blockchain technology, according to the report. Finally, blockchain networks are fault tolerant: they align the efforts of honest nodes to reject those that are dishonest.

Blockchain Technology for Secure Sharing of E-Health Records

Today's internet is broadly susceptible to centralized control, surveillance, and manipulation. Modern approaches offer immediate opportunity to upgrade internet protocols leveraging decentralization and blockchain technology to secure communications from the ill effects of bad actors and network failure. The whitepaper titled Secure Communications Using Blockchain outlines the challenges and opportunities involved in secure messaging.

Blockchain-Aided Access Control for Secure Communications in Ad Hoc Networks

RELATED VIDEO: Real World Blockchain Applications - Cybersecurity

The Internet of Things IoT becomes a leading field of computer science, which simplifies the life of human beings. The IoT, devices can interconnect and communicate with each other, in a fully autonomous mode. This autonomy has made the IoT network vulnerable to various security threats. However, due to this autonomy, there is a strong need for reliable security and storage mechanism for authentication to exchange data between IoT devices.

Blockchain in Wireless Communications and Computing: Security Threats and Applications

The Commonwealth Secretariat, the executive arm of the member Commonwealth of Nations, has launched a blockchain-powered secure communication tool geared for governments and law enforcement. Developed in partnership with UK-based startup Digital Identity Security Company DISC , the project is designed to offer a secure means of communication for government and law enforcement agencies within the Commonwealth. The move comes more than a year after the Secretariat first waded into investigating cryptocurrencies by way of commissioning a report on the topic. That report, released in February , called on member-nations to declare their legal stances on the digital currency, while arguing for "innovative" approaches to technology oversight. The organization has seen activity on the digital currency front, including a meeting last October between roughly 30 Commonwealth central bank representatives, who discussed the technology in the context of global remittances. The app was developed following a public procurement call last year. Yet those moves have elicited strong criticism from both privacy advocates and technologists, who say proposed measures, including legislation, would actually put more people at risk.

Private, Secure Communication

The Internet of Intelligent Things IoIT communication environment can be utilized in various types of applications for example, intelligent battlefields, smart healthcare systems, the industrial internet, home automation, and many more. Communications that happen in such environments can have different types of security and privacy issues, which can be resolved through the utilization of blockchain. In this paper, we propose a tutorial that aims in desiging a generalized blockchain-based secure authentication key management scheme for the IoIT environment. Moreover, some issues with using blockchain for a communication environment are discussed as future research directions.