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Key size
 
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Key size In cryptography, key size or key length is the size measured in bits of the key used in a cryptographic algorithm (such as a cipher).An algorithm's key length is distinct from its original cryptographic security, which is a logarithmic measure of the fastest known computational attack on the algorithm, also measured in bits. -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=9VIdgf1rpaM
Views: 85 WikiAudio
Triple DES
 
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Triple DES In cryptography, Triple DES (3DES) is the common name for the Triple Data Encryption Algorithm (TDEA or Triple DEA) symmetric-key block cipher, which applies the Data Encryption Standard (DES) cipher algorithm three times to each data block.The original DES cipher's key size of 56 bits was generally sufficient when that algorithm was designed, but the availability of increasing computational power made brute-force attacks feasible. -Video is targeted to blind users Attribution: Article text available under CC-BY-SA image source in video https://www.youtube.com/watch?v=78qOtd4yi74
Views: 2007 WikiAudio
Encryption algorithm Dotnet application
 
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Encryption algorithm Dotnet application AES(Advanced Encryption Standard) Algorithm RC4 Algorithm Triple DES Algorithm Public Key Please contact us for more information: Ph: +91 8549932017 (WhatsApp/SMS text only Please) www.amodhainfotech.com www.amodhait.com [email protected] Mysore,Karnataka,India. Final Year Projects For BE / BTech / B.SC/BCA/ME / MTech / MCA / Diploma Graduates (Mob: (0)8549932017/0821-4191223). AMODHA INFOTECH offers Final Year Project guidance for B.E/B.TECH/M.E/M.Tech(CSE,ISE,IT,ECE,EEE) BSC/BCA/MSC/MCA/MS(IT)/MS(Software Engg) We Offer projects in following technologies 1.JAVA/J2EE 2.Dot NET 3.PHP 4.Embedded System 5.IOT 6.NS2 /NS3 7.MATLAB 8.Android mobile applications
Views: 63 Amodha InfoTech
A Messy State of the Union: Taming the Composite State Machines of TLS
 
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A Messy State of the Union: Taming the Composite State Machines of TLS Karthikeyan Bhargavan Presented at the 2015 IEEE Symposium on Security & Privacy May 18--20, 2015 San Jose, CA http://www.ieee-security.org/TC/SP2015/ ABSTRACT Implementations of the Transport Layer Security (TLS) protocol must handle a variety of protocol versions and extensions, authentication modes, and key exchange methods. Confusingly, each combination may prescribe a different message sequence between the client and the server. We address the problem of designing a robust composite state machine that correctly multiplexes between these different protocol modes. We systematically test popular open-source TLS implementations for state machine bugs and discover several critical security vulnerabilities that have lain hidden in these libraries for years, and have now finally been patched due to our disclosures. Several of these vulnerabilities, including the recently publicized FREAK flaw, enable a network attacker to break into TLS connections between authenticated clients and servers. We argue that state machine bugs stem from incorrect compositions of individually correct state machines. We present the first verified implementation of a composite TLS state machine in C that can be embedded into OpenSSL and accounts for all its supported cipher suites. Our attacks expose the need for the formal verification of core components in cryptographic protocol libraries, our implementation demonstrates that such mechanized proofs are within reach, even for mainstream TLS implementations.
Crypto Defenses for Real-World System Threats - Kenn White - Ann Arbor
 
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Modern encryption techniques provide several important security properties, well known to most practitioners. Or are they? What are in fact the guarantees of, say, HTTPS TLS cipher suites using authenticated encryption, IPSec vs. SSL VPNs, Property Preserving Encryption, or token vaults? We live in an era of embedded Hardware Security Modules that cost less than $1 in volume, and countless options now exist for encrypting streaming network data, files, volumes, and even entire databases. Let's take a deep dive into the edge of developed practice to discuss real-world threat scenarios to public cloud and IoT data, and look closely at how we can address specific technical risks with our current encryption toolkits. Advanced math not required. Bio: Kenneth White is a security researcher whose work focuses on networks and global systems. He is co-director of the Open Crypto Audit Project (OCAP), currently managing a large-scale audit of OpenSSL on behalf of the Linux Foundation's Core Infrastructure Initiative. Previously, White was Principal Scientist at Washington DC-based Social & Scientific Systems where he led the engineering team that designed and ran global operations and security for the largest clinical trial network in the world, with research centers in over 100 countries. White co-founded CBX Group which provides security services to major organizations including World Health, UNICEF, Doctors without Borders, the US State Department, and BAO Systems. Together with Matthew Green, White co-founded the TrueCrypt audit project, a community-driven initiative to conduct the first comprehensive cryptanalysis and public security audit of the widely used TrueCrypt encryption software. White holds a Masters from Harvard and is a PhD candidate in neuroscience and cognitive science, with applied research in real-time classification and machine learning. His work on network security and forensics and been cited by media including the Wall Street Journal, Forbes, Reuters, Wired and Nature. White is a technical reviewer for the Software Engineering Institute, and publishes and speaks frequently on computational modeling, security engineering, and trust. He tweets @kennwhite.
Views: 843 Duo Security
Stream Ciphers
 
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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: 7048 nptelhrd
TORDES: A new Symetric Key Algorithm
 
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Tordes is a block cipher algorithm (bhushan et al., 2012) .It is unique independent approach which uses several computational steps along with string of operators with randomized delimiter selections by using some suitable mathematical logic. It is specially designed to produce different cipher texts by applying same key on same plain text. It is one of the best performing partial symmetric key algorithms particularly for the text message with limited size in its class.It also protects the cipher text from attacks because it is fully dependent on the key and code cannot be deciphered by applying all possible combinations of keys. The following information invariably used in TORDES For encryption Techniques. 1) Key Values 2) Code sequence string generated from a particular process. 3) Transformation of string. 4) Mirror image of string. This shows that the security of text data is not only depends upon key value. This really increases the security of text file.
Views: 128 Ajay Bhushan
#5 computer security techniques, continued + cryptography primitives
 
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- surveillance - choke point - need to know - don't do crypto yourself Cryptographic primitives - hash functions and their basic properties - pseudo-random number generators - determinism - period - entropy - /dev/random vs /dev/urandom
Views: 269 ralienpp
MULTIMEDIA ENCRYPTION BASED ON JOINT SCRAMBLING AND COMPRESSION
 
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VEL TECH MULTI TECH DR.RANGARAJAN DR.SAKUNTHALA ENGINEERING COLLEGE DEPT OF ECE ABSTRACT: We propose a multimedia Encryption based on joint scrambling and compression. Video encryption is known as video scrambling. Multimedia encryption changes the multimedia data stream for secret transmission of video data between client and server. A Video Encryption technique is applied by selecting one out of multiple unitary transforms according to the encryption key generated from random permutation method at the transformation stage. Scrambling is the simplest form of encryption that can be applied to multimedia data. A common theme in real-time image/video processing systems is how to deal with their vast amounts of data and computations. For example, a typical digital video camera capturing VGA resolution, quality, color video (640 × 480) at 30fps outputs 27 million pixels per second. If we consider a gray scale image, each pixel is represented by 8bits and so we need a bandwidth of 216 Mbps to transmit VGA-resolution video. Therefore, video compression is frequently used to decrease the amount of data transmitted over a channel. Discrete Cosine Transform (DCT) is one of the techniques used in compressing video.JPEG image compression standard use DCT (DISCRETE COSINE TRANSFORM). The discrete cosine transform is a fast transform. It is a widely used and robust method for image compression. It has excellent compaction for highly correlated data. DCT has fixed basis images DCT gives good compromise between information packing ability and computational complexity. A.ANITHA(VM5888),D.ILAKIYA(VM6623),M.PRIYADHARSHINI(VM5995)
Views: 173 Anitha Anbu
Cryptography
 
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Cryptography is the practice and study of techniques for secure communication in the presence of third parties . More generally, it is about constructing and analyzing protocols that overcome the influence of adversaries and which are related to various aspects in information security such as data confidentiality, data integrity, authentication, and non-repudiation. Modern cryptography intersects the disciplines of mathematics, computer science, and electrical engineering. Applications of cryptography include ATM cards, computer passwords, and electronic commerce. This video targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 227 encyclopediacc
Chapter 2, part 6: Crypto Basics --- crypto history, Claude Shannon
 
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Information Security: Principles and Practice, 2nd edition, by Mark Stamp Chapter 2: Crypto Basics Section 2.4 crypto history, Claude Shannon Class Lecture, 2011
Views: 3336 Mark Stamp
2011 Killian Lecture: Ronald L. Rivest, "The Growth of Cryptography"
 
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Lecture title: "The Growth of Cryptography" Ronald L. Rivest, a professor of electrical engineering and computer science who helped develop one of the world's most widely used Internet security systems, was MIT’s James R. Killian, Jr. Faculty Achievement Award winner for 2010–2011. Rivest, the Andrew and Erna Viterbi professor in MIT's Department of Electrical Engineering and Computer Science, is known for his pioneering work in the field of cryptography, computer, and network security. February 8, 2011 Huntington Hall (10-250)
PRNG Part 3
 
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Part 3 of a 3 part lesson on PRNGs.
Hackerzvoice NDH2k14 Talks : Renaud LIFCHITZ "A Common weakness in RSA Signatures"
 
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This talk will show a very common weakness in RSA signatures. We will be able to computationally extract public RSA keys from communications and embedded systems in case the public key is voluntarily not published. This weakens RSA signatures where keys of small sizes and/or quality are used and allows direct factoring attacks. 2 studies will be conducted on PGP/GPG e-mails and on the Vigik access control system which protects access to nearly 1 million buildings in France. Bio: Renaud Lifchitz is a French senior IT security consultant. He has a solid penetration testing, training and research background. His main interests are protocol security (authentication, cryptography, protocol security, information leakage, zero-knowledge proof, RFID security) and number theory. He currently mostly works on wireless protocols and was speaker for the following international conferences: CCC 2010 (Germany), Hackito Ergo Sum 2010 & 2012 (France), DeepSec 2012 (Austria), Shakacon 2012 (USA), 8dot8 2013 (Chile)
Views: 1320 Asso HZV
RSA Algorithm concept and Example
 
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Enroll to Full Course: https://goo.gl/liK0Oq Networks#4: The video explains the RSA Algorithm (public key encryption) Concept and Example along with the steps to generate the public and private keys. The video also provides a simple example on how to calculate the keys and how to encrypt and decrypt the messages. For more, visit http://www.EngineeringMentor.com. FaceBook: https://www.facebook.com/EngineeringMentor. Twitter: https://www.twitter.com/Engi_Mentor
Views: 160784 Skill Gurukul
Complex One-Time Pad
 
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http://demonstrations.wolfram.com/ComplexOneTimePad/ The Wolfram Demonstrations Project contains thousands of free interactive visualizations, with new entries added daily. This Demonstration presents very simple but probably unbreakable code. The key, consisting of random complex numbers, is added and subtracted from the message without "XORing". Any Unicode-supported language can be used. Contributed by: Rudolf Muradian
Views: 597 wolframmathematica
MD5
 
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MD5
The MD5 message-digest algorithm is a widely used cryptographic hash function producing a 128-bit (16-byte) hash value, typically expressed in text format as a 32 digit hexadecimal number. MD5 has been utilized in a wide variety of cryptographic applications, and is also commonly used to verify data integrity. MD5 was designed by Ron Rivest in 1991 to replace an earlier hash function, MD4. The source code in RFC 1321 contains a "by attribution" RSA license. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 4179 Audiopedia
Faculty Forum Online: Ron Rivest
 
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Known best for his research in cryptography, computer and network security, electronic voting, and algorithms, Institute Professor Ron Rivest joined the MIT faculty in 1974.
Apple - WWDC 2014
 
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Watch as Apple previews iOS 8 and OS X Yosemite — all-new and more powerful than ever versions of the operating systems for iPhone, iPad, and Mac — at WWDC 2014. http://www.apple.com/?cid=www-us-yt-wwdc2
Views: 2196105 Apple
IEEE 2016 VLSI LOW COST HIGH PERFORMANCE VLSI ARCHITECTURE FOR MONTGOMERY MODULAR MULTIPLICATION
 
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Palestra sobre Goldwasser e Micali - UFRJ (11/13)
 
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Palestra sobre as contribuições científicas de Shafi Goldwasser e Silvio Micali, ganhadores do Prêmio Turing 2012 (entregue em março de 2013), realizada na UFRJ em 28/11/2013.

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