{"id":2541,"date":"2020-10-27T10:00:25","date_gmt":"2020-10-27T10:00:25","guid":{"rendered":"https:\/\/afluxcoin.com\/00\/deco-privacy-preserving-oracles\/"},"modified":"2020-10-27T10:00:25","modified_gmt":"2020-10-27T10:00:25","slug":"deco-privacy-preserving-oracles","status":"publish","type":"post","link":"https:\/\/afluxcoin.com\/fr\/00\/deco-privacy-preserving-oracles\/","title":{"rendered":"DECO: Oracles pr\u00e9servant la vie priv\u00e9e"},"content":{"rendered":"

Note: If you\u2019re not familiar with Chainlink, make sure to go through my previous article first: \u201cChainlink: A Fundamental Analysis.\u201dBefore we start, here are some key terms to know:Blockchains are essentially very secure, distributed, and decentralized databases.Smart contracts are lines of code that automatically execute a function when given an input \u2014 just like a vending machine.Chainlink is a form of digital infrastructure that secures data transmission.Smart contracts, such as high-value smart derivatives, need real-world data from off-chain sources in order to execute. They need a software agent called an oracle to fetch said data, parse it, and feed it to contracts on the blockchain. Chainlink is a decentralized oracle network that eliminates any single point of failure in a smart contract by allowing multiple independent oracles to feed data into these contracts. For a more in-depth look at how the network works, check out my other article: \u201cAn In-Depth Look at the LINK Token.\u201dHow Town Crier works.A few years ago, Chainlink acquired Town Crier, which allows oracles to use trusted execution environments (TEEs) like Intel SGX, to minimize attack vectors that could be exploited on the oracle hardware itself. This greatly enhances privacy, reduces the amount of resources needed for on-chain computation, and ensures that the data being relayed by oracles is secure and tamper-proof. However, the main issue with using Town Crier is that TEEs are vulnerable to side-channel attacks and more recent attacks such as Foreshadow.Presumably, to address these concerns, Chainlink recently acquired DECO (short for Decentralized Oracle), the first privacy-preserving oracle solution that does not require the use of trusted hardware or server-side modifications. DECO utilizes existing Transport Layer Security (TLS) schemes that allow oracles to participate in a TLS session while only gaining access to the exact data that it\u2019s trying to verify, through the\u2026<\/p>","protected":false},"excerpt":{"rendered":"

Note: If you\u2019re not familiar with Chainlink, make sure to go through my previous article first: \u201cChainlink: A Fundamental Analysis.\u201dBefore we start, here are some key [\u2026]<\/span><\/p>","protected":false},"author":0,"featured_media":2542,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[35],"tags":[],"_links":{"self":[{"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/posts\/2541"}],"collection":[{"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"replies":[{"embeddable":true,"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/comments?post=2541"}],"version-history":[{"count":0,"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/posts\/2541\/revisions"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/media\/2542"}],"wp:attachment":[{"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/media?parent=2541"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/categories?post=2541"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/afluxcoin.com\/fr\/wp-json\/wp\/v2\/tags?post=2541"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}