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Cryptography PKCS 1 (Public Key Encryption from trapdoor permutations)
 
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PKCS 1 To get certificate subscribe: https://www.coursera.org/learn/crypto ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWYosqucluZghEVjUkopdD1e ======================== About this course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key.
Views: 806 intrigano
web crypto api rsassa-pkcs1-v1_5 public private keys and perform sign and verify message
 
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Refrence https://8gwifi.org/docs/window-crypto-rsassa.jsp web crypto api rsassa-pkcs1-v1_5 public private keys and perform sign and verify message The Web crypto api RSASSA-PKCS1-v1_5 algorithm identifier is used to perform signing and verification using the RSASSA-PKCS1-v1_5 algorithm specified in [RFC3447] and using the SHA hash functions defined in this specification. - **Sign**: Perform the signature generation operation - **Verify**: Perform the signature verification operation - **Generate Key**: Generate an RSA key pair, with RSA modulus length equal to the modulusLength attribute of normalizedAlgorithm and RSA public exponent equal to the publicExponent attribute of normalizedAlgorithm web crypto api example web crypto api tutorial web crypto rsa sign message example web crypto sign example webcrypto generatekey example webcrypto hash example
Views: 4 Zariga Tongy
Public Key Cryptography
 
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Full Video Details: http://www.securitytube.net/video/119
Views: 857 TheSecurityTube
Will Quantum Computers break encryption?
 
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How do you secure messages over the internet? How do quantum computers break it? How do you fix it? Why don't you watch the video to find out? Why does this description have so many questions? Why are you still reading? What is the meaning of life? Facebook: https://www.facebook.com/frameofessence Twitter: https://twitter.com/frameofessence YouTube: https://www.youtube.com/user/frameofessence CLARIFICATIONS: You don't actually need a quantum computer to do quantum-safe encryption. As briefly mentioned at 7:04 , there are encryption schemes that can be run on regular computers that can't be broken by quantum computers. CORRECTIONS: [2:18] Technically, you can use any key to encrypt or decrypt whatever you want. But there's a specific way to use them that's useful, which is what's shown in the video. [5:36] In RSA, depending on exactly what you mean by "private key", neither key is actually derivable from the other. When they are created, they are generated together from a common base (not just the public key from the private key). But typically, the file that stores the "private key" actually contains a bit more information than just the private key. For example, in PKCS #1 RSA private key format ( https://tools.ietf.org/html/rfc3447#appendix-A.1.2 ), the file technically contains the entire public key too. So in short, you technically can't get the public key from the private key or vice versa, but the file that contains the private key can hold more than just the private key alone, making it possible to retrieve the public key from it. Video links: Encryption and HUGE numbers - Numberphile https://youtu.be/M7kEpw1tn50 The No Cloning Theorem - minutephysics https://youtu.be/owPC60Ue0BE Quantum Entanglement & Spooky Action at a Distance - Veritasium https://youtu.be/ZuvK-od647c Sources: Quantum Computing for Computer Scientists http://books.google.ca/books/about/Quantum_Computing_for_Computer_Scientist.html?id=eTT0FsHA5DAC Random person talking about Quantum MITM attacks http://crypto.stackexchange.com/questions/2719/is-quantum-key-distribution-safe-against-mitm-attacks-too The Ekert Protocol (i.e. E91) http://www.ux1.eiu.edu/~nilic/Nina's-article.pdf Annealing vs. Universal Quantum Computers https://medium.com/quantum-bits/what-s-the-difference-between-quantum-annealing-and-universal-gate-quantum-computers-c5e5099175a1 Images, Documents, and Screenshots: Post-Quantum Cryptography initiatives http://csrc.nist.gov/groups/ST/post-quantum-crypto/cfp-announce-dec2016.html http://pqcrypto.eu.org/docs/initial-recommendations.pdf Internet map (Carna Botnet) http://census2012.sourceforge.net/ Quantum network maps https://www.slideshare.net/ADVAOpticalNetworking/how-to-quantumsecure-optical-networks http://www.secoqc.net/html/press/pressmedia.html IBM Quantum http://research.ibm.com/ibm-q/ Music: YouTube audio library: Blue Skies Incompetech: Jay Jay Pamgaea The House of Leaves Premium Beat: Cutting Edge Technology Second Time Around Swoosh 1 sound effect came from here: http://soundbible.com/682-Swoosh-1.html ...and is under this license: https://creativecommons.org/licenses/sampling+/1.0/
Views: 500186 Frame of Essence
learn cryptography learn the following pkcs refrences
 
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PUBLIC-KEY CRYPTOGRAPHY STANDARDS Numbers PKCS#1 RSA CRYPTOGRAPHY STANDARD PKCS#2 PKCS#3 DIFFIE-HELLMAN KEY AGREEMENT STANDARD PKCS#4 PKCS#5 PASSWORD-BASED CRYPTOGRAPHY STANDARD PKCS#6 EXTENDED-CERTIFICATE SYNTAX STANDARD PKCS#7 CRYPTOGRAPHIC MESSAGE SYNTAX STANDARD PKCS#8 PRIVATE-KEY INFORMATION SYNTAX STANDARD PKCS#9 SELECTED ATTRIBUTE TYPES PKCS#10 CERTIFICATION REQUEST SYNTAX STANDARD PKCS#11 CRYPTOGRAPHIC TOKEN INTERFACE STANDARD PKCS#12 PERSONAL INFORMATION EXCHANGE SYNTAX STANDARD PKCS#13 ELLIPTIC CURVE CRYPTOGRAPHY STANDARD PKCS#14 Pseudorandom number generator PKCS15# CRYPTOGRAPHIC TOKEN INFORMATION FORMAT STANDARD
Views: 1054 Zariga Tongy
Cryptography Constructions (Public Key Encryption from trapdoor permutations)
 
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Constructions (Public Key Encryption from trapdoor permutations) To get certificate subscribe: https://www.coursera.org/learn/crypto ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWYosqucluZghEVjUkopdD1e ======================== About this course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key.
Views: 85 intrigano
Cryptography 11.4| PKCS 1 23 min
 
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Introduction to Cryptography - I ===================== Materials (video, slides, english subtitles) from / Stanford Introduction to Cryptography Slides & Subtitle Link: http://www.mediafire.com/file/rr8pnxag9kpe3g7/Crypto-I.rar/file About this Course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key. Throughout the course participants will be exposed to many exciting open problems in the field and work on fun (optional) programming projects. In a second course (Crypto II) we will cover more advanced cryptographic tasks such as zero-knowledge, privacy mechanisms, and other forms of encryption. SKILLS YOU WILL GAIN During the 66 Video in this Course: 1 - Cryptography, 2 - Cryptographic Attacks, 3 - Public-Key Cryptography, 4 - Symmetric-Key Algorithm,
Views: 3 TO Courses
Public Key Cryptography (CSS441, L13, Y15)
 
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Concepts of public key cryptography. Course material via: http://sandilands.info/sgordon/teaching
Views: 473 Steven Gordon
PKCS 1
 
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In cryptography, PKCS #1 is the first of a family of standards called Public-Key Cryptography Standards, published by RSA Laboratories. It provides the basic definitions of and recommendations for implementing the RSA algorithm for public-key cryptography. It defines the mathematical properties of public and private keys, primitive operations for encryption and signatures, secure cryptographic schemes, and related ASN.1 syntax representations. The current version is 2.2. Compared to 2.1, which was republished as RFC 3447, version 2.2 updates the list of allowed hashing algorithms to align them with FIPS 180-4, therefore adding SHA-224, SHA-512/224 and SHA-512/256. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 794 Audiopedia
Padding (cryptography)
 
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In cryptography, padding refers to a number of distinct practices. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 1475 Audiopedia
PKCS
 
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In cryptography, PKCS is a group of public-key cryptography standards devised and published by RSA Security Inc, starting in the early 1990s. The company published the standards to promote the use of the cryptography techniques to which they had patents, such as the RSA algorithm, the Schnorr signature algorithm and several others. Though not industry standards (because the company retained control over them), some of the standards in recent years have begun to move into the "standards-track" processes of relevant standards organizations such as the IETF and the PKIX working-group. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 1636 Audiopedia
Padding - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 3490 Udacity
Cryptography Definitions and security (Public Key Encryption from trapdoor permutations)
 
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Cryptography Definitions and security (Public Key Encryption from trapdoor permutations) To get certificate subscribe: https://www.coursera.org/learn/crypto ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWYosqucluZghEVjUkopdD1e ======================== About this course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key.
Views: 108 intrigano
6.875 (Cryptography) L8: Trapdoor Functions
 
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MIT's Spring 2018 Cryptography & Cryptanalysis Class (6.875) Prof. Vinod Vaikuntanathan
Views: 68 Andrew Xia
Cryptography RSA in practice (Public Key Encryption from trapdoor permutations)
 
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RSA in practice To get certificate subscribe: https://www.coursera.org/learn/crypto ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWYosqucluZghEVjUkopdD1e ======================== About this course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key.
Views: 84 intrigano
RuhrSec 2017: "0-RTT Key Exchange with Full Forward Secrecy", Prof. Dr. Tibor Jager
 
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Reducing latency overhead while maintaining critical security guar- antees like forward secrecy has become a major design goal for key exchange (KE) protocols, both in academia and industry. Of particular interest in this re- gard are 0-RTT protocols, a class of KE protocols which allow a client to send cryptographically protected payload in zero round-trip time (0-RTT) along with the very first KE protocol message, thereby minimizing latency. Prominent ex- amples are Google’s QUIC protocol and the upcoming TLS protocol version 1.3. Intrinsically, the main challenge in a 0-RTT key exchange is to achieve forward secrecy and security against replay attacks for the very first payload message sent in the protocol. According to cryptographic folklore, it is impossible to achieve forward secrecy for this message, because the session key used to protect it must depend on a non-ephemeral secret of the receiver. If this secret is later leaked to an attacker, it should intuitively be possible for the attacker to compute the session key by performing the same computations as the receiver in the actual session. We show that this belief is actually false. We construct the first 0-RTT key exchange protocol which provides full forward secrecy for all trans- mitted payload messages and is automatically resilient to replay attacks. In our construction we leverage a puncturable key encapsulation scheme which permits each ciphertext to only be decrypted once. Fundamentally, this is achieved by evolving the secret key after each decryption operation, but without modifying the corresponding public key or relying on shared state. Our construction can be seen as an application of the puncturable encryption idea of Green and Miers (S&P 2015). We provide a new generic and standard- model construction of this tool that can be instantiated with any selectively secure hierarchical identity-based key encapsulation scheme.
Views: 341 Hackmanit GmbH
On the Security of TLS 1/3 and QUIC Against Weaknesses in PKCS#1 v 1.5 Encryption: Dr. Tibor Jager
 
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On the Security of TLS 1/3 and QUIC Against Weaknesses in PKCS#1 v 1.5 Encryption, a lecture given by Dr. Tibor Jager, of Ruhr University Bochum, during The 1st Bar-Ilan University Security Day, titled "The Current Status of TLS Security", held at BIU in May 2016 by BIU's Center for Research in Applied Cryptography and Cyber Security. Bar-Ilan Univesrity: www.biu.ac.il/en BIU's Department of Computer Science: http://cs.biu.ac.il//en
Views: 137 barilanuniversity
Padding in Ciphers
 
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https://asecuritysite.com/encryption/padding
Views: 1481 Bill Buchanan OBE
Kryptographie #38 - RSA ES OAEP
 
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In diesem Tutorial geht es um den aktuellen Standard des RSA-Verfahrens: RSA ES OAEP. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)
RSA Signature - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 1224 Udacity
Kryptographie #37 - RSA PKCS #1 v1 5
 
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In diesem Tutorial geht es um ein tatsächlich verwendetes RSA-Verfahren. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)
Cryptography The RSA trapdoor permutation
 
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The RSA trapdoor permutation To get certificate subscribe: https://www.coursera.org/learn/crypto ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWYosqucluZghEVjUkopdD1e ======================== About this course: Cryptography is an indispensable tool for protecting information in computer systems. In this course you will learn the inner workings of cryptographic systems and how to correctly use them in real-world applications. The course begins with a detailed discussion of how two parties who have a shared secret key can communicate securely when a powerful adversary eavesdrops and tampers with traffic. We will examine many deployed protocols and analyze mistakes in existing systems. The second half of the course discusses public-key techniques that let two parties generate a shared secret key.
Views: 233 intrigano
Kryptographie #72 - Lehrbuch RSA-Signaturen
 
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In diesem Tutorial wieder etwas leichteres: Signaturen, die auf der RSA-Annahme basieren. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)
Kryptographie #36 - RSA Verschlüsselung aus dem Lehrbuch
 
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Heute widmen wir uns endlich der RSA-Verschlüsselung. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ k[email protected] oder schreib einfach ein Kommentar :)
Encryption with padding tutorial
 
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The tutorial is here: https://asecuritysite.com/02_05_padding.pdf
Views: 998 Bill Buchanan OBE
Cryptographic Key Management APIs - Graham Steel
 
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Most developers use cryptography via an application program interface (API) either to a software library or a hardware device where keys are stored and all cryptographic operations take place. Designing such interfaces so that they offer flexible functionality but cannot be abused to reveal keys or secrets has proved to be extremely difficult, with a number of published vulnerabilities in widely-used crypto APIs appearing over the last decade. This lecture will focus on the example of RSA PKCS#11, the most widely used interface for cryptographic devices, but will allow us to develop principles and concepts that apply to most crypto APIs. We will demonstrate a tool, Tookan, which can reverse engineer the particular configuration of PKCS#11 in use on some device under test, construct a model of the device's functionality, and call a model checker to search for attacks. If an attack is found, it can be executed automatically on the device. We will also look at attacks related to the implementation of cryptography. This lecture follows naturally from the general introduction to security APIs, but is independent in the sense that it is disjoint and self-contained. Learning objectives basic design of cryptographic APIs logical flaws in key management cryptographic flaws in implementations The lecture was delivered at SecAppDev 2013 in Leuven, Belgium, by Graham Steel. Graham Steel holds a masters in mathematics from the University of Cambridge and a PhD in informatics from the University of Edinburgh. He is currently a researcher at INRIA, the French national agency for computer science research, where he is part of the Prosecco project team based in central Paris. Steel's main research interests are in formal analysis of information security and applied cryptography. His current work on cryptographic API verification involves using formal techniques to construct and analyse abstract models of cryptographic device interfaces. In addition to international conference and journal publications, his recent results have featured in Wired magazine and the New York Times. He has taught courses on security APIs at Tsinghua University (Beijing) and the University of Venice (Italy) as well as organising a Dagstuhl seminar on the subject.
Views: 5042 secappdev.org
Hashing Encryption Decryption Digital Signature Signing Verification Openssl Pkcs7
 
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Reach me at linked in: www.linkedin.com/in/sameer-pasha-7aba6393 This video briefs on encryption, decryption and generating as well as verifying digital signatures. ============= NOTE: Replace GREATER-ARROW with angle-bracket below, as angle-brackets are not allowed in description. Commands used: Generate hash: md5sum Plaintext.txt gcc hash_func.c -lcrypto Encrypt a file: openssl enc -aes-128-cbc -in Plaintext.txt -K ABCDEF12345 -iv ABCDEF GREATER-ARROW Cipher.txt Decrypt a file: openssl enc -d -aes-128-cbc -in Cipher.txt -K ABCDEF12345 -iv ABCDEF Generate a detached signature: openssl smime -binary -sign -in Plaintext.txt -signer PK.crt -inkey PK.key -outform pem -out file.p7b Dump signature contents: openssl asn1parse -in file.p7b -dump -i ==== Generating digital-signature: sha1sum Plaintext.txt | cut -d ' ' -f 1 GREATER-ARROW hash openssl enc -aes-128-cbc -in hash -K ABCDEF12345 -iv ABCDEF GREATER-ARROW Signature.bin Verifying digital-signature: sha1sum Plaintext.txt | cut -d ' ' -f 1 GREATER-ARROW hash_1 openssl enc -d -aes-128-cbc -in Signature.bin -K ABCDEF12345 -iv ABCDEF GREATER-ARROW hash_2 cat hash_1 cat hash_2
Views: 2027 Sameer Pasha
Padding Solution - Applied Cryptography
 
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This video is part of an online course, Applied Cryptography. Check out the course here: https://www.udacity.com/course/cs387.
Views: 1462 Udacity
Asymmetric Encryption and Decryption using C#
 
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This tutorial explains how to write a program in C# for Asymmetric Encryption and Decryption, particularly using BouncyCastle API. To add BouncyCastle API, check out our previous video at: https://www.youtube.com/watch?v=4iPzIEXC7a8
Views: 1874 PKIIndia
Applied Cryptography: The RSA Digital Signature - Part 3
 
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This video covers some of the attacks on the schoolbook RSA signature scheme
Views: 1102 Leandro Junes
Key Confirmation in Key Exchange: A Formal Treatment and Implications for TLS 1.3
 
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Key Confirmation in Key Exchange: A Formal Treatment and Implications for TLS 1.3 Felix Günther (Technische Universität Darmstadt) Presented at the 2016 IEEE Symposium on Security & Privacy May 23–25, 2016 San Jose, CA http://www.ieee-security.org/TC/SP2016/ ABSTRACT Key exchange protocols allow two parties at remote locations to compute a shared secret key. The common security notions for such protocols are secrecy and authenticity, but many widely deployed protocols and standards name another property, called key confirmation, as a major design goal. This property should guarantee that a party in the key exchange protocol is assured that another party also holds the shared key. Remarkably, while secrecy and authenticity definitions have been studied extensively, key confirmation has been treated rather informally so far. In this work, we provide the first rigorous formalization of key confirmation, leveraging the game-based security framework well-established for secrecy and authentication notions for key exchange. We define two flavors of key confirmation, full and almost-full key confirmation, taking into account the inevitable asymmetry of the roles of the parties with respect to the transmission of the final protocol message. These notions capture the strongest level of key confirmation reasonably expectable for the two communication partners of the key exchange. We demonstrate the benefits of having precise security definitions for key-confirmation by applying them to the next version of the Transport Layer Security (TLS) protocol, version 1.3, currently developed by the Internet Engineering Task Force (IETF). Our analysis shows that the full handshake as specified in the TLS 1.3 draft draft-ietf-tls-tls13-10 achieves desirable notions of key confirmation for both clients and servers. While key confirmation is generally understood and in the TLS 1.3 draft described as being obtained from the Finished messages exchanged, interestingly we can show that the full TLS 1.3 handshake provides key confirmation even without those messages, shedding a formal light on the security properties different handshake messages entail. We further demonstrate the usefulness of rigorous definition by revisiting a folklore approach to establish key confirmation (as discussed for example in SP 800-56A of NIST). We provide a formalization as a generic protocol transformation and show that the resulting protocols enjoy strong key confirmation guarantees, thus confirming its beneficial use in both theoretical and practical protocol designs.
Digital Signing and Verification using CSharp
 
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This tutorial demonstrates digital signing and verification using the Bouncy Castle APIs in C#.
Views: 13524 PKIIndia
11   4   PKCS 1 23 min
 
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Views: 84 Fco Gomes
Hardware Security Mechanisms for Authentication and Trust
 
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Explore novel lightweight hardware-based mechanisms for ensuring security, intellectual property (IP) protection and trust of integrated circuits (ICs) and systems with Farinaz Koushanfar of Rice University. New security methods are in demand due to the proliferation of the fabless semiconductor business model, increase of third-party IP reuse, emergence of personal security devices and the high overhead of traditional cryptographic protocols for embedded systems. Active hardware metering is a first system of security mechanisms and protocols that enable the design house to gain active post-fabrication control of each produced IC, their properties and terms of use or by run-time disabling of ICs in case of tamper detection. Koushanfar also shares his ongoing work in security analysis, safeguarding, implementation and the fabrication of new families of physical unclonable functions, and their use in secure system design. He also discusses attacks and countermeasures.
Views: 7298 UW Video
#01 - RSA
 
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hedhi el vidéo el loula elli ta7ki 3ala akther crypto système mosta3mel elli houwa el RSA *************************************************** PKCS#1 : https://goo.gl/B9hee8 Nombres Premiers : https://goo.gl/inOkVO Indicatrice d'Euler : https://goo.gl/uxQz4l nombres de fermat : https://goo.gl/YQcrS8 *************************************************** Music: Ether - Silent Partner : https://www.youtube.com/watch?v=r6En29azNBA Buddha - Kontekst : https://www.youtube.com/watch?v=b6jK2t3lcRs Cold Funk - Funkorama : https://www.youtube.com/watch?v=Vhd6Kc4TZls *************************************************** Facebook : https://www.facebook.com/crypto.meftah.tn/
Views: 384 Meftah
Kryptographie #73 - Angriffe auf RSA Signaturen
 
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In diesem Tutorial schauen wir uns an, warum RSA-Signaturen auf keinen Fall EUF-CMA sicher sein können (sogar nicht einmal UUF-CMA und EUF-NMA). Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)
What is PKCS 5
 
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What is PKCS 5 - Find out more explanation for : 'What is PKCS 5' only from this channel. Information Source: google
Views: 17 datunakai1b
PKCS- Fin du destin
 
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Pkcs - fin du destin Un son un peu différents que d'habitude voilà.
Views: 62 Pkcs
CISA Exam-Last Minute Revision-Elements of PKI (Domain 5)
 
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"Point to remember for CISA Exam: (1)In any given scenario, certifying authority (CA) is solely responsible for issuance of digital certificate and managing the certificate throughout its life cycle. (2)In any given scenario, registration authority (RA) is responsible for identifying and authenticating subscribers, but does not sign or issue certificates. (3)In any given scenario, a digital certificate is composed of public key and information about the owner of public key. (4)In any given scenario, time gap between update of CRL (certificate revocation list) is critical and is also posses risk in certification verification. "
Views: 999 Hemang Doshi
Kryptographie #35 - Das RSA-Problem
 
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In diesem Tutorial geht es um die Grundlage für die RSA Verschlüsselung. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)
What is a PKCS
 
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What is a PKCS - Find out more explanation for : 'What is a PKCS' only from this channel. Information Source: google
Views: 23 WikiAudio7
Kryptographie #4 - Grundkonzept von Verschlüsselungen
 
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In diesem Tutorial zeige ich euch die Grundkonzepte der Verschlüsselungsalgorithmen, die sich immer wieder wiederholen. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)
Ajay at pkcs lab
 
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Bars
Views: 120 ajay neeks
PBKDF2
 
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PBKDF2 (Password-Based Key Derivation Function 2) is a key derivation function that is part of RSA Laboratories' Public-Key Cryptography Standards (PKCS) series, specifically PKCS #5 v2.0, also published as Internet Engineering Task Force's RFC 2898. It replaces an earlier standard, PBKDF1, which could only produce derived keys up to 160 bits long. PBKDF2 applies a pseudorandom function, such as a cryptographic hash, cipher, or HMAC to the input password or passphrase along with a salt value and repeats the process many times to produce a derived key, which can then be used as a cryptographic key in subsequent operations. The added computational work makes password cracking much more difficult, and is known as key stretching. When the standard was written in 2000, the recommended minimum number of iterations was 1000, but the parameter is intended to be increased over time as CPU speeds increase. Having a salt added to the password reduces the ability to use precomputed hashes (rainbow tables) for attacks, and means that multiple passwords have to be tested individually, not all at once. The standard recommends a salt length of at least 64 bits. This video is targeted to blind users. Attribution: Article text available under CC-BY-SA Creative Commons image source in video
Views: 1644 Audiopedia
Identity-Based Encryption with Outsourced Revocation in Cloud Computing
 
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Identity-Based Encryption with Outsourced Revocation in Cloud Computing, Amazon S3 Cloud Server is Integrated with this Application www.technosoftsystemsolutions.com
23 : Algorithmen 1, Vorlesung, SS 2017
 
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0:00:00 Starten 0:00:06 Schnuppervorlesung Sicherheit 0:00:39 Überblick 0:03:10 Ziel 0:04:56 Motivation 0:09:01 Grundidee 0:11:20 Erste Eigenschaften 0:14:56 Überblick RSA 0:21:55 RSA-Schlüsselgenerierung 0:28:49 Korrektheit von RSA 0:38:04 Sicherheit? 0:43:31 Semantische Sicherheit für Public-Key-Verschlüsselung 0:50:04 Äquivalenter Begriff: IND-CPA 0:55:11 Sicherheit von RSA 0:56:43 Weitere Angriff auf RSA 0:59:31 Homomorphie von RSA 1:01:57 RSA-Padding 1:05:57 RSA-OAEP 1:07:17 Sicherheit von RSA-OAEP 1:09:35 Relevanz von RSA (-OAEP) 1:12:20 Mehr über ElGamal Dozent: Prof. Dr. Jörn Müller-Quade | Karlsruher Institut für Technologie (KIT), Institut für Theoretische Informatik Vorlesungsaufzeichnung: KIT | WEBCAST http://webcast.kit.edu
Views: 547 KIT | WEBCAST
What is a PKCS #12
 
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What is a PKCS #12 - Find out more explanation for : 'What is a PKCS #12' only from this channel. Information Source: google
Views: 15 atunakai8c
Kryptographie #74 - RSA Full Domain Hash
 
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In diesem Tutorial wandeln wir die RSA-Signaturen ein bisschen ab, nach dem Prinzip Hash-then-Sign. Buchempfehlung: Introduction to Modern Cryptography von Katz und Lindell: http://amzn.to/2qu6CNb ❤❤❤ Früherer Zugang zu Tutorials, Abstimmungen, Live-Events und Downloads ❤❤❤ ❤❤❤ https://www.patreon.com/user?u=5322110 ❤❤❤ ❤❤❤ Keinen Bock auf Patreon? ❤❤❤ ❤❤❤ https://www.paypal.me/TheMorpheus ❤❤❤ 🌍 Website 🌍 https://the-morpheus.de ¯\_(ツ)_/¯ Tritt der Community bei ¯\_(ツ)_/¯ ** https://discord.gg/BnYZ8XS ** ** https://www.reddit.com/r/TheMorpheusTuts/ ** ( ͡° ͜ʖ ͡°) Mehr News? Mehr Code? ℱ https://www.facebook.com/themorpheustutorials 🐦 https://twitter.com/TheMorpheusTuts 🐙 https://github.com/TheMorpheus407/Tutorials Du bestellst bei Amazon? Bestell über mich, kostet dich null und du hilfst mir »-(¯`·.·´¯)-» http://amzn.to/2slBSgH Videowünsche? 🎁 https://docs.google.com/spreadsheets/d/1YPv8fFJOMRyyhUggK8phrx01OoYXZEovwDLdU4D4nkk/edit#gid=0 Fragen? Feedback? Schreib mir! ✉ https://www.patreon.com/user?u=5322110 ✉ https://www.facebook.com/themorpheustutorials ✉ https://discord.gg/BnYZ8XS ✉ [email protected] oder schreib einfach ein Kommentar :)

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