❤️ انجمن علمی دانشکده ریاضی دانشگاه صنعتی شریف (همبند) برگزار می‌کند:
❤️ مجموعه جلسات «گذر»
💠 عنوان: Non-Interactive Key-Exchange Protocols
🎙 ارائه‌دهنده: الهه صادقی
🔻 توضیحات: In this work, we initiate a study of K-NIKE protocols in the fine-grained setting, in which there is a polynomial gap between the running time of the honest parties and that of the adversary. Our goal is to show the possibility, or impossibility, of basing such protocols on weaker assumptions than those of K-NIKE for K >= 3. We improve the security by further using algebraic structures, while avoiding pairings. In particular, we show that there is a 4-party NIKE in Shoup's generic group model with a quadratic gap between the number of queries by the honest parties vs. that of the adversary.
پیشنیاز های علمی: Basic Knowledge of Group Theory and Cryptography. I will explain the intuition behind every part of the lecture though, so everyone are welcome to join.
❤️ انجمن علمی دانشکده ریاضی دانشگاه صنعتی شریف (همبند) برگزار می‌کند:
❤️ مجموعه جلسات «گذر»
💠 عنوان: Non-Interactive Key-Exchange Protocols
🎙 ارائه‌دهنده: الهه صادقی
🔻 توضیحات: In this work, we initiate a study of K-NIKE protocols in the fine-grained setting, in which there is a polynomial gap between the running time of the honest parties and that of the adversary. Our goal is to show the possibility, or impossibility, of basing such protocols on weaker assumptions than those of K-NIKE for K >= 3. We improve the security by further using algebraic structures, while avoiding pairings. In particular, we show that there is a 4-party NIKE in Shoup's generic group model with a quadratic gap between the number of queries by the honest parties vs. that of the adversary.
پیشنیاز های علمی: Basic Knowledge of Group Theory and Cryptography. I will explain the intuition behind every part of the lecture though, so everyone are welcome to join.
Channels are not fully encrypted, end-to-end. All communications on a Telegram channel can be seen by anyone on the channel and are also visible to Telegram. Telegram may be asked by a government to hand over the communications from a channel. Telegram has a history of standing up to Russian government requests for data, but how comfortable you are relying on that history to predict future behavior is up to you. Because Telegram has this data, it may also be stolen by hackers or leaked by an internal employee. There was another possible development: Reuters also reported that Ukraine said that Belarus could soon join the invasion of Ukraine. However, the AFP, citing a Pentagon official, said the U.S. hasn’t yet seen evidence that Belarusian troops are in Ukraine. Andrey, a Russian entrepreneur living in Brazil who, fearing retaliation, asked that NPR not use his last name, said Telegram has become one of the few places Russians can access independent news about the war. Overall, extreme levels of fear in the market seems to have morphed into something more resembling concern. For example, the Cboe Volatility Index fell from its 2022 peak of 36, which it hit Monday, to around 30 on Friday, a sign of easing tensions. Meanwhile, while the price of WTI crude oil slipped from Sunday’s multiyear high $130 of barrel to $109 a pop. Markets have been expecting heavy restrictions on Russian oil, some of which the U.S. has already imposed, and that would reduce the global supply and bring about even more burdensome inflation. 'Wild West'
from nl
