{"id":35410,"date":"2019-10-31T22:04:10","date_gmt":"2019-10-31T19:04:10","guid":{"rendered":"https:\/\/prohoster.info\/blog\/cloudflare-predstavil-raspredelyonnyj-generator-sluchajnyh-chisel\/"},"modified":"2019-10-31T22:04:10","modified_gmt":"2019-10-31T19:04:10","slug":"cloudflare-predstavil-raspredelyonnyj-generator-sluchajnyh-chisel","status":"publish","type":"post","link":"https:\/\/prohoster.info\/no\/blog\/news\/cloudflare-predstavil-raspredelyonnyj-generator-sluchajnyh-chisel","title":{"rendered":"Cloudflare har introdusert en distribuert tilfeldig tallgenerator.","gt_translate_keys":[{"key":"rendered","format":"text"}]},"content":{"rendered":"

Cloudflare-selskapet har presentert<\/a><\/noindex> tjeneste League of Entropy<\/a><\/noindex>, for which a consortium of several organizations has been formed, interested in providing quality random numbers. Unlike existing centralized systems, League of Entropy does not rely on a single source and uses entropy to generate a random sequence, obtained<\/a><\/noindex> from several unconnected generators, controlled by different project participants. Due to the distributed nature of the project, compromising or tampering with one or two of the sources will not lead to the compromise of the final random number. <\/p>\n

It should be noted that the generated random numbers fall into the category of publicly available sequences, which cannot be used for generating encryption keys and in areas where a random number must be kept secret. The service aims to provide random numbers that cannot be predicted in advance, but once generated, these numbers become publicly available, including for verifying the authenticity of past random values. <\/p>\n

Public random numbers are generated every 60 seconds. Each number is linked to its sequence number (round), from which at any time and from any participating server, one can obtain a previously generated value. Such random numbers can be used in distributed systems, cryptocurrencies, and blockchains, where different nodes need access to a single random number generator (for example, when forming proof of work), as well as in various lotteries and for forming random samples during election audits.<\/p>\n

To work with the service and to deploy one's own nodes foresl\u00e5tt<\/a><\/noindex> verkt\u00f8y Drand<\/a><\/noindex>, written in Go and supplied under the MIT license. Drand runs as a background process that connects to external generators participating in the distributed network and collectively forms a consolidated random value. The consolidated value is generated using methods of threshold cryptography<\/a><\/noindex> og bilinear pairing<\/a><\/noindex>. The generation of a consolidated random value can be performed on the user's system without involving centralized aggregators.<\/p>\n

Drand kan ogs\u00e5 brukes til \u00e5 levere lokalt genererte private tilfeldige tall til kunder. For \u00e5 overf\u00f8re det tilfeldige tallet benyttes en ECIES-krypteringsskjema, der kunden genererer en privat og en offentlig n\u00f8kkel. Den offentlige n\u00f8kkelen sendes til serveren med Drand. Det tilfeldige tallet blir kryptert ved hjelp av denne offentlige n\u00f8kkelen og kan kun ses av kunden som har den private n\u00f8kkelen. Verk\u00f8yet «drand» kan brukes for \u00e5 kontakte serverne (for eksempel «drand get public group.toml», der group.toml er listen over noder for foresp\u00f8rsel) eller Web API (for eksempel kan man bruke «curl https:\/\/drand.cloudflare.com\/api\/public» eller kontakte fra JavaScript ved hjelp av biblioteket. DrandJS<\/a><\/noindex>). Sp\u00f8rsm\u00e5lsmetadata sendes i TOML-format, og svaret gis i JSON.<\/p>\n

I dag har fem selskaper og organisasjoner blitt med i League of Entropy-initiativet, som har gitt tilgang til sine entropigeneratorer. Deltakerne i prosjektet befinner seg i forskjellige land og bruker forskjellige metoder for \u00e5 skaffe entropi:<\/p>\n