- published: 03 Jun 2012
- views: 1173
In cryptography, a random oracle is an oracle (a theoretical black box) that responds to every unique query with a (truly) random response chosen uniformly from its output domain. If a query is repeated it responds the same way every time that query is submitted.
Stated differently, a random oracle is a mathematical function chosen uniformly at random, that is, a function mapping each possible query to a (fixed) random response from its output domain.
Random oracles as a mathematical abstraction were firstly used in rigorous cryptographic proofs in the 1993 publication by Mihir Bellare and Phillip Rogaway (1993). They are typically used when the cryptographic hash functions in the method cannot be proven to possess the mathematical properties required by the proof. A system that is proven secure when every hash function is replaced by a random oracle is described as being secure in the random oracle model, as opposed to secure in the standard model of cryptography.
Cryptography or cryptology; from Greek κρυπτός kryptós, "hidden, secret"; and γράφειν graphein, "writing", or -λογία -logia, "study", respectively is the practice and study of techniques for secure communication in the presence of third parties called adversaries. These adversaries are often referred to as Eve in cryptography, while the sender and recipient of messages are called Alice and Bob respectively. More generally, cryptography is about constructing and analyzing protocols that prevent third parties or the public from reading private messages; various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation are central to modern cryptography. Modern cryptography exists at the intersection of the disciplines of mathematics, computer science, and electrical engineering. Applications of cryptography include ATM cards, computer passwords, and electronic commerce.
Cryptography prior to the modern age was effectively synonymous with encryption, the conversion of information from a readable state to apparent nonsense. The originator of an encrypted message (Alice) shared the decoding technique needed to recover the original information only with intended recipients (Bob), thereby precluding unwanted persons (Eve) from doing the same. Since World War I and the advent of the computer, the methods used to carry out cryptology have become increasingly complex and its application more widespread.
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Proofs in Cryptography Lecture 11 Random Oracle Model ROM ALPTEKİN KÜPÇÜ Assistant Professor of Computer Science and Engineering Koç University http://crypto.ku.edu.tr
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Paul Baecher and Marc Fischlin Darmstadt University of Technology, Germany Abstract. We discuss a reduction notion relating the random oracles in two cryptographic schemes A and B. Basically, the random oracle of scheme B reduces to the one of scheme A if any hash function instantiation of the random oracle (possibly still oracle based) which makes A secure also makes B secure. In a sense, instantiating the random oracle in scheme B is thus not more demanding than the one for scheme A. If, in addition, the standard cryptographic assumptions for scheme B are implied by the ones for scheme A, we can conclude that scheme B actually relies on weaker assumptions. Technically, such a conclusion cannot be made given only individual proofs in the random oracle model for each scheme. The notion o...
In diesem Tutorial zeige ich euch die ideale Hashfunktion - Random Oracle. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb Folgt mir auf Twitter: https://twitter.com/TheMorpheusTuts Facebook: https://www.facebook.com/themorpheustutorials Github: https://github.com/TheMorpheus407/Tutorials Website: http://the-morpheus.de Unterstütze mich: https://www.patreon.com/user?u=5322110 Oder auf Paypal: https://www.paypal.me/TheMorpheus oder bestell auf Amazon über mich: http://amzn.to/2slBSgH oder bestell auf Amazon über mich: http://amzn.to/2slBSgH Unser Discord-Server: https://discord.gg/Ske5EP
How I made it work for me
Join us for one of our favorite themes of the season: Random! This time around the guys don't have any idea what's going to happen and the decks are crazier than last time. Who's got the stinker? Who will have to take a backseat to the game this time? Make sure to like the video so we can get 7000 likes to see Wes stand for an entire episode! Decklists: http://www.starcitygames.com/article/32371_CMDR-VS.html Subscribe to us for more Magic content: https://www.youtube.com/user/starcitygamesvideo/?sub_confirmation=1 Like us on Facebook: http://www.facebook.com/starcitygames Follow us on Twitter: http://www.twitter.com/starcitygames Follow the SCGTour on Twitter: http://www.twitter.com/scglive The official Youtube Channel of StarCityGames.com, the world's largest Magic: The Gathering reta...
Team Fuzzy Panda once again with this week's match up videos. Sorry if they seem a little late, but we have been busy. In this match up we have the Phantom Blaster Overlord build used by the "Flame of Heaven" vs. a random Oracle Think Tank deck used by "The Corpse Collector". Hope you guys enjoy as always and feel free to leave comments.
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Proofs in Cryptography Lecture 11 Random Oracle Model ROM ALPTEKİN KÜPÇÜ Assistant Professor of Computer Science and Engineering Koç University http://crypto.ku.edu.tr
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Paul Baecher and Marc Fischlin Darmstadt University of Technology, Germany Abstract. We discuss a reduction notion relating the random oracles in two cryptographic schemes A and B. Basically, the random oracle of scheme B reduces to the one of scheme A if any hash function instantiation of the random oracle (possibly still oracle based) which makes A secure also makes B secure. In a sense, instantiating the random oracle in scheme B is thus not more demanding than the one for scheme A. If, in addition, the standard cryptographic assumptions for scheme B are implied by the ones for scheme A, we can conclude that scheme B actually relies on weaker assumptions. Technically, such a conclusion cannot be made given only individual proofs in the random oracle model for each scheme. The notion o...
In diesem Tutorial zeige ich euch die ideale Hashfunktion - Random Oracle. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb Folgt mir auf Twitter: https://twitter.com/TheMorpheusTuts Facebook: https://www.facebook.com/themorpheustutorials Github: https://github.com/TheMorpheus407/Tutorials Website: http://the-morpheus.de Unterstütze mich: https://www.patreon.com/user?u=5322110 Oder auf Paypal: https://www.paypal.me/TheMorpheus oder bestell auf Amazon über mich: http://amzn.to/2slBSgH oder bestell auf Amazon über mich: http://amzn.to/2slBSgH Unser Discord-Server: https://discord.gg/Ske5EP
How I made it work for me
Join us for one of our favorite themes of the season: Random! This time around the guys don't have any idea what's going to happen and the decks are crazier than last time. Who's got the stinker? Who will have to take a backseat to the game this time? Make sure to like the video so we can get 7000 likes to see Wes stand for an entire episode! Decklists: http://www.starcitygames.com/article/32371_CMDR-VS.html Subscribe to us for more Magic content: https://www.youtube.com/user/starcitygamesvideo/?sub_confirmation=1 Like us on Facebook: http://www.facebook.com/starcitygames Follow us on Twitter: http://www.twitter.com/starcitygames Follow the SCGTour on Twitter: http://www.twitter.com/scglive The official Youtube Channel of StarCityGames.com, the world's largest Magic: The Gathering reta...
Team Fuzzy Panda once again with this week's match up videos. Sorry if they seem a little late, but we have been busy. In this match up we have the Phantom Blaster Overlord build used by the "Flame of Heaven" vs. a random Oracle Think Tank deck used by "The Corpse Collector". Hope you guys enjoy as always and feel free to leave comments.
Contributed Talk 9 by Dominique Unruh at 5th International Conference on Quantum Cryptography (QCrypt 2015) in Hitotsubashi Hall, Tokyo, September 29th, 2015. Download the slides at: http://2015.qcrypt.net/scientific-program/
Heyho danke fürs zusehen würde mich wie immer über eine bewertung freuen für fragen oder wer lust hat mitzuspielen kann sich bei uns in der steam gruppe melden!: Steam gruppe: Official BronyTV Group ----------------------------------------------------------------------------------------------------------- Bald kommen auch ein parr livestreams dafür nur auf twitch vorbei schauen ich werde immer ein video hochladen wo das stream datum steht! Stream: http://www.twitch.tv/pieplayer20
Join us for one of our favorite themes of the season: Random! This time around the guys don't have any idea what's going to happen and the decks are crazier than last time. Who's got the stinker? Who will have to take a backseat to the game this time? Make sure to like the video so we can get 7000 likes to see Wes stand for an entire episode! Decklists: http://www.starcitygames.com/article/32371_CMDR-VS.html Subscribe to us for more Magic content: https://www.youtube.com/user/starcitygamesvideo/?sub_confirmation=1 Like us on Facebook: http://www.facebook.com/starcitygames Follow us on Twitter: http://www.twitter.com/starcitygames Follow the SCGTour on Twitter: http://www.twitter.com/scglive The official Youtube Channel of StarCityGames.com, the world's largest Magic: The Gathering reta...
Just the first 26 minutes, plus this is basically another quality test (I want to do one for Metroid Fusion on this thing as well). This and Oracle of Seasons is FINALLY out on the stateside and I will say this...I like this game (and seasons), I don't like the 5th dungeon because the song is....odd. Other than that I like this game (and oracle of seasons) a lot. 0:24 - Intro 1:41 - File select 2:07 - Teleportation 2:33 - "Saving" Impa, who is now a giant muscular lady this time. 3:58 - And here we see. Nayru, the Oracle, not the goddess because that would've been way too easy. 5:23 - Plot Plot Plot Plot Plot Plot 9:57 - And we get the Wooden Sword....surely this is the sign that we are indeed a hero....... nope.... 11:14 - Mini Dungeon : Maku Cave (Present) 11:51 - The Maku Tr...