Cryptography To get certificate subscribe: https://www.coursera.org/learn/cryptography ======================== Playlist URL: https://www.youtube.com/playlist?list=PL2jykFOD1AWb07OLBdFI2QIHvPo3aTTeu ============================ Youtube channel: https://www.youtube.com/user/intrigano ============================ https://scsa.ge/en/online-courses/ https://www.facebook.com/cyberassociation/
Views: 7634 intrigano
https://corvuscrypto.com/posts/padding-oracle-attack-part-one This is part 1 of a two part video to showcase the padding oracle attack. In this video I explain/show how to build the CBC mode of operation while also leaving open a vulnerability that will ultimately be exploited in the next video. Other Resources: https://en.wikipedia.org/wiki/Block_cipher_mode_of_operation http://www.moserware.com/2009/09/stick-figure-guide-to-advanced.html
Views: 1581 Corvus Crypto
A brief treatment of cryptographic principles and a surface level description and explanation of padding oracle attacks. This video was created for a final project in the "Defense Against the Dark Arts" class at Oregon State University. If you notice any errors or oversights in the video, please leave a comment for future watchers.
Views: 168 Ian McQuoid
CBC padding attacks 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: 2806 intrigano
What is ORACLE ATTACK? What does ORACLE ATTACK mean? ORACLE ATTACK meaning - ORACLE ATTACK definition - ORACLE ATTACK explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. SUBSCRIBE to our Google Earth flights channel - https://www.youtube.com/channel/UC6UuCPh7GrXznZi0Hz2YQnQ In the field of security engineering, an oracle attack is an attack that exploits the availability of a weakness in the system which can be used as an "oracle" which can give a simple go/no go indication to show whether the attacker has reached, or is nearing, their goal. The attacker can then combine the oracle with systematic search of the problem space to complete their attack. The padding oracle attack, and compression oracle attacks such as BREACH, are examples of oracle attacks, as was the practice of "crib-dragging" in the cryptanalysis of the Enigma machine. An oracle need not be 100% accurate: even a small statistical correlation with the correct go/no go result can frequently be enough for a systematic automated attack. In a compression oracle attack the use of adaptive data compression on a mixture of chosen plaintext and unknown plaintext can result in content-sensitive changes in the length of the compressed text that can be detected even though the content of the compressed text itself is then encrypted. This can be used in protocol attacks to detect when the injected known plaintext is even partially similar to the unknown content of a secret part of the message, greatly reducing the complexity of a search for a match for the secret text. The CRIME and BREACH attacks are examples of protocol attacks using this phenomenon.
Views: 130 The Audiopedia
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: 47 TO Courses
This is an explanation of Bleichenbacher's million messages attacks (1998) on RSA encryption PKCS#1 v1.5 You can also visually follow how the attack works here: https://github.com/mimoo/RSA_PKCS1v1_5_attacks/blob/master/bb98_graphic.sage
Views: 477 David Wong
Animated explanation of attacking CBC encryption and a padding oracle Support me on Patreon : https://patreon.com/pastiesbin Read my blog : http://pastebin.site Facebook: https://www.facebook.com/Pasties-Bin-347320828948622/ Twitter: https://twitter.com/paste_bin This is my first video explaining a security concept in an easy to understand way By sharing this video you'll be making more developers aware of these security issues. Share it References: The image of the ECB penguin is from wikipedia: "This image is derived from File:Tux.jpg, and therefore requires attribution. All uses are permitted provided that Larry Ewing, the owner of the original image, who requires that you mention him, his email address, [email protected], and The GIMP, according to http://www.isc.tamu.edu/~lewing/linux/."
Views: 3316 Pastie's Bin
In this video I go through the actual mechanisms of the padding oracle attack. The attack exploits any CBC-mode block cipher that alerts the user to malformed padding to recover the full plaintext. This attack has been, and is, used in the wild. Source required to follow: https://corvuscrypto.com/posts/padding-oracle-attack-part-two#files Errata: ~4:25 - I meant to say PKCS #5 as a padding SPECIFICATION. PKCS #5 is a set of rules. Padding is only a part of it. Sorry :')
Views: 1071 Corvus Crypto
Hacking in action by Shanti Lindström, The aim of this video is to demonstrate how hackers can use the padding oracle attack to download the host web.config. Tools used in this video can be downloaded from http://blog.mindedsecurity.com/ Good work guys!!
Views: 15132 ShantiLindstrom
https://securecodewarrior.com | In this module, we'll be looking at Padding Oracle. We’ll explain what a Padding Oracle attack is, its causes and preventions, and some potential hazards. To learn more about our solutions, follow us on our other social media channels. Twitter: https://twitter.com/SecCodeWarrior LinkedIn: https://www.linkedin.com/company/secure-code-warrior Facebook: https://www.facebook.com/securecodewarrior/
Views: 51 Secure Code Warrior
Paper by Gildas Avoine and Loïc Ferreira, presented at CHES 2018. See https://www.iacr.org/cryptodb/data/paper.php?pubkey=28966
Views: 71 TheIACR
Talk at crypto 2012. Authors: Romain Bardou, Riccardo Focardi, Yusuke Kawamoto, Lorenzo Simionato, Graham Steel, Joe-Kai Tsay. See http://www.iacr.org/cryptodb/data/paper.php?pubkey=24311
Views: 897 TheIACR
Hands on link : http://secgroup.ext.dsi.unive.it/wp-content/uploads/2012/11/Practical-Padding-Oracle-Attacks-on-RSA.html#S5 The Bleichenbacher attack (Original paper) : http://archiv.infsec.ethz.ch/education/fs08/secsem/bleichenbacher98.pdf
Views: 137 neelima john
http://blog.mindedsecurity.com/2010/10/breaking-net-encryption-with-or-without.html In this example we show how to download a Web.config via a padding Oracle attack. Details are included with also full exploit code. Details have been released, because Microsoft official patches are now available. Please patch!! Workarounds simply do not work... against the "T" exploit!
Views: 32480 xcd3
Padding Oracle Exploit Tool 1.0.0 demo. In minutes POET completely decrypts the VIewState of a JavaServer Faces application. The server is Apache MyFaces configured to use AES/CBC encryption with a random secret key and IV. POET uses Vaudenay's padding oracle attack to decrypt the web application client-side state byte by byte. Download POET: http://netifera.com/research
Views: 37716 netifera
All systems and applications utilizing the Secure Socket Layer (SSL) 3.0 with cipher-block chaining (CBC) mode ciphers may be vulnerable. However, the POODLE (Padding Oracle On Downgraded Legacy Encryption) attack demonstrates this vulnerability using web browsers and web servers, which is one of the most likely exploitation scenarios. Some Transport Layer Security (TLS) implementations are also vulnerable to the POODLE attack. The POODLE attack can be used against any system or application that supports SSL 3.0 with CBC mode ciphers. This affects most current browsers and websites, but also includes any software that either references a vulnerable SSL/TLS library (e.g. OpenSSL) or implements the SSL/TLS protocol suite itself. By exploiting this vulnerability in a likely web-based scenario, an attacker can gain access to sensitive data passed within the encrypted web session, such as passwords, cookies and other authentication tokens that can then be used to gain more complete access to a website (impersonating that user, accessing database content, etc.). Subscribe and share!
Views: 3158 Fierce Outlaws
Views: 24848 cryptbe
Poodle PoC attack https://github.com/mpgn/poodle-PoC Poodle (Padding Oracle On Downgraded Legacy Encryption) attack CVE-2014-3566
Views: 28 No sec
This proof-of-concept exploit performs a Padding Oracle attack against a simple ASP.NET application (it can be any application) to download a file from the remote Web Server. In this example the proof-of-concept exploit downloads the Web.config file. The proof-of-concept exploit can be found at http://www.ampliasecurity.com/research/aspx_po_chotext_attack.rb
Views: 14506 AmpliaSecurity
On Tuesday, October 14, 2014, Google released details on the POODLE attack, a padding oracle attack that targets CBC-mode ciphers in SSLv3. The vulnerability allows an active MITM attacker to decrypt content transferred an SSLv3 connection. While this tool is not to exploit the Poodle vulnerability but rather to help you identify servers that are affected. Download link: https://github.com/ronald-nsale/Poodle-Me
Views: 7581 Ronnieflip
Live demonstration on how to detect a real-world CBC padding oracle vulnerability and then exploit it with a Bletchley-based Python script. Bletchley project page: https://code.google.com/p/bletchley/ The video assumes you understand the basics of CBC padding oracle exploits. If you don't, then spend some quality time with this fine tutorial: http://www.skullsecurity.org/blog/2013/padding-oracle-attacks-in-depth If you like this video, consider following me on Twitter (@ecbftw) (Sorry about the audio. Gets out of sync and choppy in a few places, but didn't feel like recording it all again.)
Views: 1235 Timothy Morgan
Abstract. 20 years ago Daniel Bleichenbacher discovered an attack against RSA as it was used in SSL and the padding mode PKCS #1 v1.5. Obviously such an old attack doesn't work any more today, because everyone has fixed it. Okay... That was a joke. It still works. With some minor modifications we were able to discover the ROBOT attack (Return Of Bleichenbachers Oracle Threat). It affected nine different vendors and we were able to sign a message with the private key from facebook.com. More info at https://robotattack.org/ and in the full paper at https://eprint.iacr.org/2017/1189 Biography. Hanno Böck is a freelance journalist and regularly covers IT security topics for Golem.de and other publications. He also writes the monthly Bulletproof TLS Newsletter. In 2014 he started the Fuzzing Project, an effort to improve the security of free software applications. This work is supported by the Linux Foundation's Core Infrastructure Initiative.
Views: 1095 Hackmanit GmbH
Implementation of the Bleichenbacher Padding Oracle attack on RSA Language used: Python Based on: http://secgroup.dais.unive.it/wp-content/uploads/2012/11/Practical-Padding-Oracle-Attacks-on-RSA.html#eq1
Views: 11 Navya Unnikrishnan