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Miller Rabin Primality Test | With Solved Example |Cryptography And Network Security
 
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Proof of the Rabin-Miller Theorem, Showing the Validity of the Rabin-Miller Test for Composite Numbers In this video we have discussed about how the Primality Testing failed proving Fermat's Theorem so to overcome that we learned about this new method known as Miller Rabin Test. Visit Our Channel :- https://www.youtube.com/channel/UCxik... Follow Smit Kadvani on :- Facebook :- https://www.facebook.com/smit.kadvani Instagram :- https://www.instagram.com/the_smit0507 Follow Dhruvan Tanna on :- Facebook :- https://www.facebook.com/dhruvan.tanna1 Instagram :- https://www.instagram.com/dhru1_tanna Follow Keyur Thakkar on :- Facebook :- https://www.facebook.com/keyur.thakka... Instagram :- https://www.instagram.com/keyur_1982 Snapchat :- keyur1610 Follow Ankit Soni on:- Facebook :- https://www.facebook.com/ankitsoni.1511 Instagram :- https://www.instagram.com/ankit_soni1511
Views: 14061 Quick Trixx
Rabin Encryption
 
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MMU Applied Cryptography Assignment
The RSA Cryptosystem
 
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Cryptography and Network Security by Prof. D. Mukhopadhyay, Department of Computer Science and Engineering, IIT Kharagpur. For more details on NPTEL visit http://nptel.iitm.ac.in
Views: 10997 nptelhrd
Fermat's Primality Testing |With Solved Example | Cryptography And Network Security
 
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In this video we have discussed about how to test whether the Fermat theorems fails or not using Primality Testing. Visit Our Channel :- https://www.youtube.com/channel/UCxik... In this lecture we have taught about what how to solve Fermat's Primality Testing. Follow Smit Kadvani on :- Facebook :- https://www.facebook.com/smit.kadvani Instagram :- https://www.instagram.com/the_smit0507 Follow Dhruvan Tanna on :- Facebook :- https://www.facebook.com/dhruvan.tanna1 Instagram :- https://www.instagram.com/dhru1_tanna Follow Keyur Thakkar on :- Facebook :- https://www.facebook.com/keyur.thakka... Instagram :- https://www.instagram.com/keyur_1982 Snapchat :- keyur1610 Follow Ankit Soni on:- Facebook :- https://www.facebook.com/ankitsoni.1511 Instagram :- https://www.instagram.com/ankit_soni1511
Views: 6374 Quick Trixx
Cryptography for the masses: Nadim Kobeissi at TEDxMontreal
 
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(Sous-titres en français bientôt disponibles) Amid today's debate on electronic surveillance and the ongoing Arab Spring protests, this young 22 year old Montreal hacktivist founded Cryptocat, a free, accessible, and open source encrypted chat application. His mission: make private communication on the web available to all. Dans le contexte du printemps arabe et des enjeux de surveillance électronique, ce jeune cybertactiviste montréalais a fondé à l'âge 22 ans Cryptocat: un logiciel de conversation protégé par cryptographie simple à utiliser, gratuit et à code source ouvert. Sa mission: rendre accessible à tous la communication privée sur le web. https://twitter.com/kaepora https://crypto.cat/ For more information, please visit http://tedmontreal.com/ Introduction motion animation by: http://www.departement.ca/ In the spirit of ideas worth spreading, TEDx is a program of local, self-organized events that bring people together to share a TED-like experience. At a TEDx event, TEDTalks video and live speakers combine to spark deep discussion and connection in a small group. These local, self-organized events are branded TEDx, where x = independently organized TED event. The TED Conference provides general guidance for the TEDx program, but individual TEDx events are self-organized.* (*Subject to certain rules and regulations)
Views: 11182 TEDx Talks
Practical Attacks on Crypto Structures The SSL/TLS Case  Itsik Mantin Technion Lecture
 
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Practical Attacks on Crypto Structures The SSL/TLS Case - Itsik Mantin of Imperva at Technion-Israel Institute of Technology Technion Computer Engineering Center summer school 2014 Lecture The Secure Socket Layer SSL and its successor Transport Layer Security TLS are probably the most popular cryptographic protocols in the world. Over the last decade, a large number of attacks were discovered on TLS, showing practical ways to break the protocol and impersonate legitimate servers or steal secret data. As opposed to most attacks on popular systems, many of the TLS attacks broke the cryptographic structures of the protocol, including the way it uses the Advanced Encryption Standard AES. In the presentation I will explain how the BEAST, TIME, BREACH and other attacks work, and will try to answer the questions that bother many people in the web industry: 1 Why does TLS have so many vulnerabilities, and 2Should we expect more attacks to come.
Views: 921 Technion
RSA (cryptosystem)
 
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RSA is one of the first practicable public-key cryptosystems and is widely used for secure data transmission. In such a cryptosystem, the encryption key is public and differs from the decryption key which is kept secret. In RSA, this asymmetry is based on the practical difficulty of factoring the product of two large prime numbers, the factoring problem. RSA stands for Ron Rivest, Adi Shamir and Leonard Adleman, who first publicly described the algorithm in 1977. Clifford Cocks, an English mathematician, had developed an equivalent system in 1973, but it wasn't declassified until 1997. A user of RSA creates and then publishes a public key based on the two large prime numbers, along with an auxiliary value. The prime numbers must be kept secret. Anyone can use the public key to encrypt a message, but with currently published methods, if the public key is large enough, only someone with knowledge of the prime factors can feasibly decode the message. Breaking RSA encryption is known as the RSA problem. It is an open question whether it is as hard as the factoring problem. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 456 Audiopedia
What is HASH FUNCTION? What does HASH FUNCTION mean? HASH FUNCTION meaning & explanation
 
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What is HASH FUNCTION? What does HASH FUNCTION mean? HASH FUNCTION meaning & explanation. A hash function is any function that can be used to map data of arbitrary size to data of fixed size. The values returned by a hash function are called hash values, hash codes, hash sums, or simply hashes. One use is a data structure called a hash table, widely used in computer software for rapid data lookup. Hash functions accelerate table or database lookup by detecting duplicated records in a large file. An example is finding similar stretches in DNA sequences. They are also useful in cryptography. A cryptographic hash function allows one to easily verify that some input data maps to a given hash value, but if the input data is unknown, it is deliberately difficult to reconstruct it (or equivalent alternatives) by knowing the stored hash value. This is used for assuring integrity of transmitted data, and is the building block for HMACs, which provide message authentication. Hash functions are related to (and often confused with) checksums, check digits, fingerprints, randomization functions, error-correcting codes, and ciphers. Although these concepts overlap to some extent, each has its own uses and requirements and is designed and optimized differently. The Hash Keeper database maintained by the American National Drug Intelligence Center, for instance, is more aptly described as a catalogue of file fingerprints than of hash values.
Views: 4196 The Audiopedia
Public-key cryptography
 
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Public-key cryptography, also known as asymmetric cryptography, is a class of cryptographic algorithms which require two separate keys, one of which is secret (or private) and one of which is public. Although different, the two parts of this key pair are mathematically linked. The public key is used to encrypt plaintext or to verify a digital signature; whereas the private key is used to decrypt ciphertext or to create a digital signature. The term "asymmetric" stems from the use of different keys to perform these opposite functions, each the inverse of the other -- as contrasted with conventional ("symmetric") cryptography which relies on the same key to perform both. Public-key algorithms are based on mathematical problems which currently admit no efficient solution that are inherent in certain integer factorization, discrete logarithm, and elliptic curve relationships. It is computationally easy for a user to generate their own public and private key-pair and to use them for encryption and decryption. The strength lies in the fact that it is "impossible" (computationally infeasible) for a properly generated private key to be determined from its corresponding public key. Thus the public key may be published without compromising security, whereas the private key must not be revealed to anyone not authorized to read messages or perform digital signatures. Public key algorithms, unlike symmetric key algorithms, do not require a secure initial exchange of one (or more) secret keys between the parties. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 739 Audiopedia
Semantic Security Analysis of SCADA Networks to Detect Malicious Control Commands in Power Grid
 
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TCIPG Seminar Series on Technologies for a Resilient Power Grid. Presented on January 10, 2014 by Zbigniew Kalbarczyk, Research Professor, Coordinated Science Laboratory, University of Illinois at Urbana-Champaign. Trustworthy Cyber Infrastructure for the Power Grid (TCIPG), http://tcipg.org
Views: 531 tcipgvideo
Public-key cryptography
 
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Public-key cryptography, also known as asymmetric cryptography, is a class of cryptographic algorithms which require two separate keys, one of which is secret and one of which is public. Although different, the two parts of this key pair are mathematically linked. The public key is used to encrypt plaintext or to verify a digital signature; whereas the private key is used to decrypt ciphertext or to create a digital signature. The term "asymmetric" stems from the use of different keys to perform these opposite functions, each the inverse of the other -- as contrasted with conventional cryptography which relies on the same key to perform both. This video targeted to blind users. Attribution: Article text available under CC-BY-SA Public domain image source in video
Views: 2071 encyclopediacc
One-way function
 
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In computer science, a one-way function is a function that is easy to compute on every input, but hard to invert given the image of a random input. Here, "easy" and "hard" are to be understood in the sense of computational complexity theory, specifically the theory of polynomial time problems. Not being one-to-one is not considered sufficient of a function for it to be called one-way. The existence of such one-way functions is still an open conjecture. In fact, their existence would prove that the complexity classes P and NP are not equal, thus resolving the foremost unsolved question of theoretical computer science. The converse is not known to be true, i.e. the existence of a proof that P and NP are not equal would not directly imply the existence of one-way functions. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 519 Audiopedia
ISRAEL/LEBANON: 2 ISRAELI SOLDIERS KILLED & 4 INJURED BY ROAD SIDE BOMB
 
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Arabic/Eng/Nat Two Israeli soldiers were killed and four wounded, in a roadside bombing in southern Lebanon early Friday morning. Security sources said the bomb was detonated as an Israeli army patrol drove near the village of Aishiyeh in the centre of Israel's self-declared southern security zone. The Iranian-backed Hezbollah, or Party of God has claimed responsibility for the attack. Helicopters ferried the four wounded to hospitals in Israel. Three soldiers were seriously wounded and one lightly injured in the blast shortly after midnight on Friday (2200 GMT Thursday). Two soldiers died instantly in the blast. The bomb was detonated as the Israeli army patrol drove near the village of Aishiyeh in Israel's self-declared security zone in southern Lebanon. Israeli artillery retaliated against suspected guerrilla infiltrators on the edge of the border security enclave. Following a day of mourning for their slain prime minister, the Israeli cabinet convened Friday morning for its weekly session. Ministers are expected to hear a report about the southern Lebanon incident. Israeli Prime Minister Benjamin Netanyahu will also brief his cabinet on the Israeli - Palestinian talks that resumed last night. The negotiators continued into the early hours discussing security arrangements, but did not reach a final conclusion on the issue of Israeli forces withdrawing from Hebron. Some negotiators felt there were still many problems to overcome. SOUNDBITE: (ENGLISH) "Very, very hard and very intensive and we will continue." Question: "Do you think you can reach an agreement today?" "We will do our best - this is our effort... why we are here." Question: "Could you point (indicate) the main problems?" "More than 15 problems." SUPER CAPTION: Hassan Asfour, Palestinian Negotiator Palestinian leader Yasser Arafat's second-in-command believed the discussions were at least partly productive. SOUNDBITE: "Progress is being made, but no agreement yet." SUPER CAPTION: Abu Mazen, Arafat's Deputy Those who paid homage to Yitzhak Rabin on the anniversary of his death on Thursday will be hoping negotiators can continue his work towards peace. You can license this story through AP Archive: http://www.aparchive.com/metadata/youtube/9a196771a02848d4cfc15d45227d038c Find out more about AP Archive: http://www.aparchive.com/HowWeWork
Views: 153 AP Archive
Len Adleman, 2002 ACM Turing Award Recipient
 
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Interviewed about what has influenced him, his life, his research work, and his accomplishments since receiving the Turing Award. More information: http://amturing.acm.org/award_winners/adleman_7308544.cfm
Learning Online
 
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How to watch educational videos in flipped classrooms.
Views: 7268 Jeff Suzuki
Prestige Lecture Series: Micheal Luby - A Mathematical Theory of Distributed Storage
 
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Abstract: We describe a natural and general model of distributed storage. To ensure that a message stored in the system remains recoverable as nodes fail and are replaced with new nodes, a repairer continually accesses data stored at the nodes, performs computations on the accessed data, and stores results of the computations back to the nodes. Our primary focus is on the trade-offs between storage overhead and the amount of repair traffic generated by the repairer to maintain recoverability of the message. We provide lower bounds and upper bounds on these trade-offs. The lower bounds are information-theoretic, i.e., we prove no repairer can operate below certain storage overhead/repair traffic trade-offs. The upper bounds are algorithmic, i.e., we prove there is a specific repairer algorithm that can operate within certain storage overhead/repair traffic trade-offs. In important cases the lower and upper bounds are essentially matching. Bio: Mike Luby is Vice President, Technology, Qualcomm Technologies, Inc, focusing on advanced research, including reliable distributed storage, broadcast multimedia delivery, and Internet streaming. He has been recognized for his work in coding theory, cryptography and content delivery technologies, including the IEEE Richard W. Hamming Medal, the ACM Paris Kannelakis Theory and Practice Award, the IEEE Eric E. Sumner Communications Theory Award, and the UC Berkeley Distinguished Alumni in Computer Science Award. Mike earned a BSc in Applied Math from MIT and a PhD in Theoretical Computer Science from UC Berkeley. He is a IEEE Fellow, ACM fellow, and member of the National Academy of Engineering.