I-privacy ku-blockchains ikakhulukazi ibizwa njengezinto engaphezulu kwe-cryptographic. Uma ama-transaction values zihlanganisa, idatha ye-sender ne-receiver zihlanganiswa, futhi izitifiketi zibonisa noma yini ngaphandle kokuqinisekisa, ke ukuvikelwa kwe-privacy lapha. Ngokuvamile, le ngempumelelo ivimbele, uma ama-transactions zithole i-wallet futhi zithole inethiwekhi ye-peer-to-peer. I-Data e-transit, nangokuthi ilawulwe yi-cryptographic security, Ukubonisa ulwazi malunga nenkinga. Ukulungele Ngaphezu kwama-privacy mechanisms amakhulu e-chain akukwazi ukucubungula i-trackers ukucubungula ukucubungula i-transaction yakho. I-timing, i-routing pathways, ne-correlation form patterns zihlukanisa ulwazi mayelana ne-transaction yakho. Lokhu kubangelwa kwegama le-attack ukuthi i-Dandelion++ ibheka, futhi kulesi yayo ukuhlanganiswa kwegama le-transaction yakho. Izinzuzo Inethiwekhi Beldex Inethiwekhi Beldex Inethiwekhi Beldex I-Dandelion++ ihamba lokhu ngaphandle kwe-cryptography kuya ku-network propagation, ukuhlinzeka ukuvikelwa kwe-privacy ukusuka kwelanga lokuqala le-transaction. Beldex The Network Layer: The Quiet Privacy Leak I-Network Layer: I-Privacy Leak Ehlukile Flooding Ukukhuthaza Iningi blockchains usebenzisa a Uma i-transaction ikhiqizwa, i-node yokuqala inikeza ku-multi-nodes ezihambelana ezivela kwenethiwekhi ngokuvamile. Wonke ama-nodes zihlanganisa ku-akhawunti elandelayo, okuvumela ukuba i-transaction ifakwe emhlabeni wonke kwenethiwekhi ngaphansi kwezinye imizuzu. flooding-based propagation model. Ngokusho kwezinhlelo zokusebenza. Ngokusho kwezinhlelo zokusebenza, Okuningi mayelana ne-de-anonymization ye-privacy-network transactions kungenziwa lapha kuleli hlelo: it highlights why stronger, privacy-preserving network propagation protocols are essential. . Exploring the Monero Peer-to-Peer Network Ukuhlola I-Monero Peer-to-Peer Network Why Flooding is Inefficient Yini Ukukhuthaza I-Inefficient Ngesikhathi eside, okuvumela ama-attacks ezivumelanisa isiko se-transaction. Futhi uma i-transaction ngokuvamile akuyona akukho, isiko se-network ngokuvamile ivumelanisa. Njengomzekelo, i-metadata kuyinto enhle kakhulu kunazo. A tracker running multiple nodes (or a botnet) can monitor the order in which transactions arrive, measure propagation delays, and map connections between nodes. Ngezinto ze-privacy-focused blockchains, lokhu kubonisa isixazululo phakathi kwezimali zebhizinisi zebhizinisi zebhizinisi zebhizinisi zebhizinisi. Abasebenzisi angathanda ukuthi izimali zabo zithintela, lapho idilesi yayo ye-IP noma indawo yebhizinisi iyatholakala ngokuvamile ngesikhathi sokusebenza. Kuyinto mechanism ukumelana ukumelana ezivamile ezivamile ezivela emkhakheni ezingenalutho ukuthi ngisho uma inani elikhulu ye-nodes isebenza ngokumangalisayo, ukuvikelwa kwebhizinisi. Dandelion addresses this exact problem by changing how transactions move through the network. How Dandelion Relays Transactions Indlela Dandelion Relays Izimali ukuguqulwa le data exposure nge a Ngaphandle kokubonisa i-transactions, inethiwekhi iveza ukuguqulwa ku-stam phase kanye ne-fluff phase. I-Dandelion two-phase propagation model. I-Dandelion The Stem Phase Iphasi ye-vote Ngo-stam phase, i-transaction iyahlekile ngokushesha nge-path ye-nodes eyenziwe ngempumelelo. I-transaction iyahlekile ngokushesha nge-hop, ebonakalayo i-stem ye-thin rather than a branching tree. Ngesikhathi se-phase, isiko se-transaction iyahlekile. The Fluff Phase I-Flow Phase Ngemuva kokuthunyelwe kwebhizinisi, isigaba se-fluff kuqala. Kule isikhathi, i-transaction iyathunyelwa kwebhizinisi, efanayo ne-transaction model, kodwa nge-timing e-random to prevent correlation. Lokhu kubizwa ngokuthi i-diffusion. Ukulungiselela okuhlobene ne-anonymity kanye ne-network sharing yenza i-Dandelion efanelekayo. Ngemuva kokufinyelela kwe-transaction ku-network eningi, akuyona ngokushesha ngokuhambisana ne-origin. Dandelion++: Dynamic Connectivity, Epochs, and A Fail Safe I-Dandelion++: Ukuxhumanisa kwe-Dynamic, i-Epochs, ne-A Fail Safe Dynamic Connectivity and Epochs I-Dynamic Connectivity ne-Epochs I-Original Uma umuntu uyazi inethiwekhi ngokushesha, noma inethiwekhi elikhulu kakhulu ye-subnet noma i-botnet, akwazi ukucacisa izidakamizwa kwezohwebo ngokushesha. Dandelion model introduced the stem-and-fluff idea but relied on a static path. I-Dandelion++ isixazululo lwezimpendulo ngokusebenzisa ukuxhuma kwe-dynamic. isixazululo se-Dynamic Connectivity. Ukuhlobisa + Ukuhlobisa + Nodes ukuguqulwa ngokuvamile ukuxhumanisa izixhumanisi ze-node ngezikhathi ezincinane ezizwa ngokuthi Kuqala kwezinsuku ezingu-epoch, i-node ihamba amabili amabili amabili amasha (izindlela ze-relay). Xa akufumana i-transaction, i-node ihamba nge-one of these paths. epochs Uma i-node isebenza njenge-relay, inikeza i-transaction nge-one of the pre-determined stem paths, kanti ezinye ziye ziye ziye zithunyelwe, okwenza isigaba se-fluff. Ngenxa yokuguqulwa okuqhubekayo ngezikhathi ezithile, inethiwekhi akuyona isakhiwo esizayo. During each epoch, nodes roll a die to determine whether they're going to act as a relay passing on the transaction or initiate the full phase or diffusion phase. Ngokusho umngcele we-attacker, i-diagram akuyona. Akukho indawo ebonakalayo ukuthi akuyona imizamo enhle. The Fail Safe I-Failure ye-Safe I-Dandelion protocol yokuhlanza yokuqala ivame ukuthi zonke ama-node ku-network Dandelion++ also introduces a fail safe mechanism which the original Dandelion did not take into account. 
 
 
 
 
 Ukusebenza ngokwenene Ukusebenza i-Dandelion network propagation protocol will relay only one transaction at a time will always relay the transaction that it receives Kodwa ngezinkalo zebhizinisi enhle, lokhu akuyona ngokuvamile. I-nod malicious noma i-botnet ngaphakathi kwenethiwekhi angakwazi, 
 
 
 
 
 Ukusebenza ngokumangalisayo Ngaba akuyona i-Dandelion network propagation protocol kungenzeka ukuhanjiswa kwezinto eziningana ngexesha elifanayo, ezinye engatholakali noma engatholakali ngexesha le-stam inokufuna inkonzo ngokugcwele ngaphandle kokudlulisela noma ukwandisa i-transaction Ukuze ukuqinisekisa ukuthi imibuzo ifakwe ngaphandle kwemibuzo emibi, wonke node enikeza imibuzo ngexesha le-stamm phase uqala a Uma i-timer ivuliwe ngaphandle kwe-node enikezela le transaction ngokushesha nge-fluff, Uhlelo le-failsafe inikeza imisebenzi ezimbili ebalulekile: timer it initiates its own fluff phase, propagating the transaction via delayed diffusion. 
 
 
 It ukunciphisa izinzuzo ze-deanonymization ezisekelwe ku-timing analysis kanye It ukunciphisa i-so-called black-hole attacks, lapho ama-nodes ezijulile zithintela i-transactions ngexesha le-stam ngaphandle kokuthunyelwe. Why This Matters in the Real World Why This Matters In The Real World Ngaphandle kwe-transaction data encrypted, umngcele we-surveillance angakwazi ukuhlola inethiwekhi futhi ukhangela ukuthi Let us assume that a user is making repeated private payments from the same location. from a specific IP address the transactions are made frequently. Ngesikhathi eside, lokhu kusebenza umlomo we-statistical fingerprint. Ngokusebenzisa i-Dandelion++, ama-transactions asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo asebenzayo. Ngaphandle kwe-network-layer privacy, ama-transaction patterns angakwazi ukucacisa ukusebenza kwebhizinisi, izinsuku zokusebenza, noma i-geographic clustering. The same principle applies to merchants accepting BDX payments. Dandelion++ ensures that accepting private payments does not quietly leak operational metadata. Dandelion++ in the Context of Beldex I-Dandelion++ ku-Beldex I-Beldex isebenza njenge-privacy-first blockchain futhi isekelwe inethiwekhi ye-Proof-of-Stake eyenza i-transactions ngokubambisana ne-privacy ecosystem ehlanganisiwe , BelNet, and the Beldex Browser. Ngena ngemvume Ngena ngemvume Ngena ngemvume Dandelion++ ifakwe inethiwekhi Beldex ukwandisa ukunambitheka okwengeziwe. Uma ifakwe nge , umphumela u-layered anonymity. Umthamo we-network igcinwe ku-transport layer, imiphumela ye-transaction igcinwe ku-P2P layer, futhi impahla ye-transaction igcinwe ku-chain. Umthamo we-network igcinwe ku-transport layer, umthamo we-transaction igcinwe ku-P2P layer, futhi umthamo we-transaction igcinwe ku-chain. Umthamo we-transaction igcinwe ku-transport layer. Ukusuka kwe-VPN ye-BelNet Ukusuka kwe-VPN ye-BelNet Ukusuka kwe-VPN ye-BelNet Ngokwenza lokhu, izinhlelo zokuxhumana zihlanganisa ezingenalutho emkhakheni. Closing the Metadata Gap Ukunciphisa i-metadata gap Njengoba i-blockchain analytics ifakwe, izivakashi zihlanganisa kakhulu ku-metadata kunokuba yi-transaction content. I-network-layer information iyahambisana ngempumelelo, kunzima ukucubungula, futhi ngokuvamile ibhekwa abasebenzisi. I-over ibonise le ngempumelelo ngokusebenzisa ukuhlanganiswa ne-Beldex network. I-over ayisekelwe ku-confidence assumptions, i-relay centralized, noma i-user configuration. Dandelion++ Ukuze I-Dandelion++ ihamba lapho kuqala. Zonke i-cryptographic kanye ne-network-level privacy zihlanganisa ukuvikelwa kwe-transaction kuya ku-incorporation ekupheleni kwe-block. I-Cryptography ivimbela into yakho. I-Dandelion++ ihamba lapho kuqala. Beldex

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