An adaptive chosen-ciphertext attack (abbreviated as CCA2) is an interactive form of chosen-ciphertext attack in which an attacker first sends a number of ciphertexts to be decrypted chosen adaptively, and then uses the results to distinguish a target ciphertext without consulting the oracle on the challenge ciphertext. In an adaptive attack, the attacker is further allowed adaptive queries to be asked after the target is revealed (but the target query is disallowed). It is extending the indifferent (non-adaptive) chosen-ciphertext attack (CCA1) where the second stage of adaptive queries is not allowed. Charles Rackoff and Dan Simon defined CCA2 and suggested a system building on the non-adaptive CCA1 definition and system of Moni Naor and Moti Yung (which was the first treatment of chosen ciphertext attack immunity of public key systems). In certain practical settings, the goal of this attack is to gradually reveal information about an encrypted message, or about the decryption key itself. For public-key systems, adaptive-chosen-ciphertexts are generally applicable only when they have the property of ciphertext malleability — that is, a ciphertext can be modified in specific ways that will have a predictable effect on the decryption of that message. (Wikipedia).
Random Oracle - Applied Cryptography
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What Could Go Wrong Solution - Applied Cryptography
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Random Oracle Solution - Applied Cryptography
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Symmetric Ciphers - Applied Cryptography
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Weak Ciphers - Applied Cryptography
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Correctness And Security - Applied Cryptography
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Biased Generator - Applied Cryptography
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Theory and Practice of Cryptography
Google Tech Talks December, 12 2007 ABSTRACT Topics include: Introduction to Modern Cryptography, Using Cryptography in Practice, Proofs of Security and Security Definitions and A Special Topic in Cryptography Speaker: Steve Weis Steve Weis received his PhD from the Cryptography and In
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Toy Substitution Cipher 2 Solution - Applied Cryptography
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Cryptanalysis of Classical Ciphers
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
From playlist Computer - Cryptography and Network Security
Ruby Conf 2011 Better Than ROT13 by Bradley Grzesiak
We use encryption every day, from SSL to SSH to passing notes to your crush during Social Studies class. But how does it actually work? I'll avoid most of the math but cover the concepts of both symmetric and asymmetric encryption, including hashing and signing. I'll also show how to use O
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Jonathan Katz - Introduction to Cryptography Part 1 of 3 - IPAM at UCLA
Recorded 25 July 2022. Jonathan Katz of the University of Maryland presents "Introduction to Cryptography I" at IPAM's Graduate Summer School Post-quantum and Quantum Cryptography. Abstract: This lecture will serve as a "crash course" in modern cryptography for those with no prior exposure
From playlist 2022 Graduate Summer School on Post-quantum and Quantum Cryptography
OWASP AppSecUSA 2012: Web App Crypto - A Study in Failure
Speaker: Travis H. Seldom in cryptography do we have any unconditional proofs of the difficulty of defeating our cryptosystems. Furthermore, we are often defeated not by the attacks we anticipated, but the vectors we did not know about. Like fire and safety engineers, we learn from the mi
From playlist OWASP AppSecUSA 2012
Jonathan Katz - Introduction to Cryptography Part 2 of 3 - IPAM at UCLA
Recorded 25 July 2022. Jonathan Katz of the University of Maryland presents "Introduction to Cryptography II" at IPAM's Graduate Summer School Post-quantum and Quantum Cryptography. Abstract: This session will focus on public-key cryptography, including key exchange, public-key encryption,
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Thwarting Guessing - Applied Cryptography
This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
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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
From playlist Computer - Cryptography and Network Security
Cryptography - Seminar 1 - Foundations
This seminar series is about the mathematical foundations of cryptography. In the first seminar Eleanor McMurtry introduces cryptography and explains some of the problems that need to be solved in order to develop proper foundations. The webpage for this seminar is https://lnor.net/uc-sem
From playlist Metauni
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
From playlist Computer - Cryptography and Network Security
Cryptography Lecture 2, Substitution Ciphers
From playlist Calculus I
Hashing And EKE - Applied Cryptography
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