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What is Brute Force Attack? How it's done? | [Hindi]
 
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Video Title: What is Brute Force Attack? How it's done? | [Hindi] In this video i will tell you what is brute force attack and how it's done. We will see in detail how it works. we will also discuss what is dictionary attack and how its different from brute force attack. Everything explained in Hindi. Extra info: In cryptography, a brute-force attack consists of an attacker trying many passwords or passphrases with the hope of eventually guessing correctly. The attacker systematically checks all possible passwords and passphrases until the correct one is found. Alternatively, the attacker can attempt to guess the key which is typically created from the password using a key derivation function. This is known as an exhaustive key search. A brute-force attack is a cryptanalytic attack that can, in theory, be used to attempt to decrypt any encrypted data (except for data encrypted in an information-theoretically secure manner). Such an attack might be used when it is not possible to take advantage of other weaknesses in an encryption system (if any exist) that would make the task easier. When password guessing, this method is very fast when used to check all short passwords, but for longer passwords other methods such as the dictionary attack are used because a brute-force search takes too long. Longer passwords, passphrases and keys have more possible values, making them exponentially more difficult to crack than shorter ones. Brute-force attacks can be made less effective by obfuscating the data to be encoded making it more difficult for an attacker to recognize when the code has been cracked or by making the attacker do more work to test each guess. One of the measures of the strength of an encryption system is how long it would theoretically take an attacker to mount a successful brute-force attack against it. Brute-force attacks are an application of brute-force search, the general problem-solving technique of enumerating all candidates and checking each one. ----------------------------------------- Like our Facebook page: https://www.facebook.com/DesiScientistReal/ Follow us on Twitter: https://twitter.com/DS_Asli
Views: 7489 Desi Scientist
What is a brute force attack?
 
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There are sophisticated and complex attacks that can be launched against various modern cryptosystems. But you could also just try banging the door down. A brute force attack consists of an attack just repeatedly trying to break a system: for example, by guessing passwords. However, brute force attacks can be somewhat sophisticated and work at least some of the time. Credits: Talking: Geoffrey Challen (Assistant Professor, Computer Science and Engineering, University at Buffalo). Producing: Greg Bunyea (Undergraduate, Computer Science and Engineering, University at Buffalo). Part of the https://www.internet-class.org online internet course. A blue Systems Research Group (https://blue.cse.buffalo.edu) production.
Views: 6975 internet-class
C/C++ Cryptography — Brute Force Algorithm | Crack XOR Cipher
 
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This algorithm will brute force the key used to xor cipher a plaintext. Of course you can implement this algorithm to break other ciphers by other encryption algorithms.I hope the music didn't make you cry. XOR cipher data: https://xor.pw/? Calculate how long it will take to brute force a key: http://calc.opensecurityresearch.com/ Note: THIS WONT WORK WITHOUT THE PLAINTEXT! You need both the plaintext and the ciphertext. Q: What can be then used for if not cracking ciphertexts? A: After you managed to find the plaintext of some ciphertext, you will be able to crack all the data ciphered with the same key. Q: Why can't you bruteforce a XOR Cipher? A: It's due to One-Time-Pad or OTP, See this: http://stackoverflow.com/questions/32... and this: https://en.wikipedia.org/wiki/One-tim... • Support me on Patreon: http://www.patreon.com/Zer0Mem0ry • Donate Bitcoin: 1JhSKGgRQmir8rRF4Sm5CP4fDDofKFAypd • Facebook: https://www.facebook.com/Zer0Mem0ry • Twitter: https://www.twitter.com/Zer0Mem0ry
Views: 20892 Zer0Mem0ry
Brute force attack | INS | (Eng-Hindi)
 
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You can find many more videos regarding information and network security so, don't forget to subscribe our channel(tutorials hub)..........
Views: 230 Parth Patel
C/C++ Cryptography — Simple CRC32 Brute Force Cracking Algorithm
 
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- Project on Github: https://github.com/Zer0Mem0ry/CrackCRC32 Get My Visual Studio Theme! https://www.patreon.com/posts/how-to-get-and-8806134 • Support me on Patreon: http://www.patreon.com/Zer0Mem0ry • Donate Bitcoin: 1JhSKGgRQmir8rRF4Sm5CP4fDDofKFAypd • Facebook: https://www.facebook.com/Zer0Mem0ry • Twitter: https://www.twitter.com/Zer0Mem0ry
Views: 7653 Zer0Mem0ry
Brute Force Attack | Explained
 
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This is an Explanation Video About The Brute Force Attacks used for Cracking a Password.
Views: 178 geekLog
MITM and Brute Force Attacks on DES and AES (CSS322, L7, Y14)
 
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Meet-in-the-middle attack on Double DES explained; example of OpenSSL for encryption; brute force attacks on DES and AES. Course material via: http://sandilands.info/sgordon/teaching
Views: 2487 Steven Gordon
Hacking WPA/WPA2 Bruteforce - Kali Linux *
 
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Hacking WPA/WPA2 Bruteforce - Kali Linux This article is about the cryptanalytic method. For similarly named methods in other disciplines, see Brute force. The EFF's US$250,000 DES cracking machine contained over 1,800 custom chips and could brute-force a DES key in a matter of days. The photograph shows a DES Cracker circuit board fitted on both sides with 64 Deep Crack chips. In cryptography, a brute-force attack consists of an attacker trying many passwords or passphrases with the hope of eventually guessing correctly. The attacker systematically checks all possible passwords and passphrases until the correct one is found. Alternatively, the attacker can attempt to guess the key which is typically created from the password using a key derivation function. This is known as an exhaustive key search. A brute-force attack is a cryptanalytic attack that can, in theory, be used to attempt to decrypt any encrypted data[1] (except for data encrypted in an information-theoretically secure manner). Such an attack might be used when it is not possible to take advantage of other weaknesses in an encryption system (if any exist) that would make the task easier. When password guessing, this method is very fast when used to check all short passwords, but for longer passwords other methods such as the dictionary attack are used because a brute-force search takes too long. Longer passwords, passphrases and keys have more possible values, making them exponentially more difficult to crack than shorter ones. Brute-force attacks can be made less effective by obfuscating the data to be encoded making it more difficult for an attacker to recognize when the code has been cracked or by making the attacker do more work to test each guess. One of the measures of the strength of an encryption system is how long it would theoretically take an attacker to mount a successful brute-force attack against it. Brute-force attacks are an application of brute-force search, the general problem-solving technique of enumerating all candidates and checking each one. Read More :https://en.wikipedia.org/wiki/Brute-force_attack DON'T FORGOT TO SUBSCRIBE!! I'M NOT RESPONSIBLE FOR YOUR ACTIONS! EDUCATIONAL PURPOSES ONLY!
Views: 5086 The Shadow Brokers
Lecture 6: Data Encryption Standard (DES): Key Schedule and Decryption by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Basic Cryptographic System: Cryptography and Network Security for GATE(CSE)
 
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The complete YouTube playlist can be viewed here: https://goo.gl/mjyDev This lesson explains the Basic Cryptographic System, under the course, "Cryptography and Network Security for GATE". The lesson explains the following subtopics: A basic encryption-decryption system Cryptanalysis Brute Force Attack Symmetric Cryptography Asymmetric Cryptography Some important terminology and concepts are also illustrated, for the better understanding of the subject. For the entire course: https://goo.gl/aTMBNZ For more lessons by Ansha Pk: https://goo.gl/2DX9Wn Must watch for all the GATE/ESE/PSU Exams. Download the Unacademy Learning App from the Google Play Store here:- https://goo.gl/02OhYI Download the Unacademy Educator app from the Google Play Store here: https://goo.gl/H4LGHE Do Subscribe and be a part of the community for more such lessons here: https://goo.gl/UGFo7b Visit Our Facebook Group on GATE here: https://goo.gl/cPj5sb A Basic Cryptographic System: Cryptography and Network Security for GATE(CSE)
Symmetric Key Encryption and Brute Force Attacks (ITS335, L03, Y15)
 
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Symmetric key encryption for confidentiality. DES, 3DES and AES. Brute force attacks. Speed tests with OpenSSL. Examples of hardware for brute force attacks. Course material via: http://sandilands.info/sgordon/teaching
Views: 1407 Steven Gordon
Java Algorithms - Brute Force
 
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I was just experimenting with some brute force algorithms when I came up with this one. C++ version probably coming soon. Any suggestions for future ideas are welcome, possible in most programming languages. Like and subscribe if you want to see more! Music: ▶ Horizon - Dying Light Code for Brute Force Algorithm on GitHub: ▶https://github.com/R-e-t-u-r-n-N-u-l-l/Java-Algorithms/blob/master/BruteForce.java Social media: ▶ Github: https://github.com/R-e-t-u-r-n-N-u-l-l
Views: 4399 Return Null
what is brute force attack & dictionary attack ? |TECH SETTAI TAMIL
 
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what is brute force attack & dictionary attack ? |TECH SETTAI TAMIL In cryptography, a brute-force attack consists of an attacker trying many passwords or passphrases with the hope of eventually guessing correctly. The attacker systematically checks all possible passwords and passphrases until the correct one is found. SUBSCRIBE US BY CLICKING RED SUBSCRIBE BUTTON, SUPPORT US ON FB, TWITTER AND ALSO G+ twitter: https://twitter.com/TechSettai fb:https://www.facebook.com/techsettai/ g+ :https://plus.google.com/u/1/117864875... blog: http://techsettai.blogspot.in/
What is Brute Force Attack Define In Hindi
 
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Hello Friends In This Video We Will Learn About Various Techniques Used in Password Solving Like LM & NTLM Password Hash in Hindi. Download Software http://www.oxid.it/cain.html Follow Us On Facebook link https://www.facebook.com/TechnicalExpertHackers/ Like Share and Subscribe YouTube Channel For more Videos https://youtu.be/fxvJc0kBV64 Kali Linux First Class https://youtu.be/H9UIaua7Nwk?list=PLAaMs54jGf5VinRN1DayB6or_FKEMk5JI Ethical Hacking Course In Hindi Series https://youtu.be/v4DfOwN_Yac?list=PLAaMs54jGf5V7-2nn2RkKCfaWhw1InRIF Ethical Hacking In English Series https://youtu.be/odaHqorKKyw?list=PLAaMs54jGf5W_yRcUwVk8LoeJ1oXLTwhr
NETWORK SECURITY - TYPES OF ATTACKS
 
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Two Categories of attacks 1) Passive Attacks a) Release of the content b) Traffic Analysis 2) Active Attacks a) Masquerade b) Replay c) Modification of Message d) Denial of Service
Symmetric Key Encryption and Brute Forece (ITS335, L3, Y14)
 
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Symmetric key encryption ciphers and brute force attacks. Example of using openssl for encryption (https://sandilands.info/sgordon/demo-of-symmetric-key-encryption-using-openssl). Course material via: http://sandilands.info/sgordon/teaching
Views: 741 Steven Gordon
What is Hashing on the Blockchain?
 
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What is Hashing on the Blockchain? https://blockgeeks.com/guides/what-is-hashing/ Cryptographic hashing is a key feature in the security and efficiency of blockchains. If you've ever wondered how so much data can be stored securely on every node in the network, hashing is a big part of the answer! We'll cover all the basics you need to know in this video! For more blockchain guides, courses, and videos, visit us at blockgeeks.com! Cryptographic hash functions A cryptographic hash function is a special class of hash functions which has various properties making it ideal for cryptography. There are certain properties that a cryptographic hash function needs to have in order to be considered secure. Let’s run through them one by one. Property 1: Deterministic This means that no matter how many times you parse through a particular input through a hash function you will always get the same result. This is critical because if you get different hashes every single time it will be impossible to keep track of the input. Property 2: Quick Computation The hash function should be capable of returning the hash of an input quickly. If the process isn’t fast enough then the system simply won’t be efficient. Property 3: Pre-Image Resistance What pre-image resistance states is that given H(A) it is infeasible to determine A, where A is the input and H(A) is the output hash. Notice the use of the word “infeasible” instead of “impossible”. We already know that it is not impossible to determine the original input from its hash value. Let’s take an example. Suppose you are rolling a dice and the output is the hash of the number that comes up from the dice. How will you be able to determine what the original number was? It’s simple all that you have to do is to find out the hashes of all numbers from 1-6 and compare. Since hash functions are deterministic, the hash of a particular input will always be the same, so you can simply compare the hashes and find out the original input. But this only works when the given amount of data is very less. What happens when you have a huge amount of data? Suppose you are dealing with a 128-bit hash. The only method that you have to find the original input is by using the “brute-force method”. Brute-force method basically means that you have to pick up a random input, hash it and then compare the output with the target hash and repeat until you find a match.
Views: 185 Blockgeeks
What Is Cryptanalysis | Types Of Cryptanalysis Attacks On Cryptography
 
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Cryptanalysis : Types Of Cryptanalysis Attacks On Cryptography. Visit Our Channel :- https://www.youtube.com/channel/UCxikHwpro-DB02ix-NovvtQ In this lecture we have taught about what is cryptanalysis , what are the types of cryptanalysis attacks. 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: 15663 Quick Trixx
How secure is 256 bit security?
 
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Supplement to the cryptocurrency video: How hard is it to find a 256-bit hash just by guessing and checking? What kind of computer would that take? Cryptocurrency video: https://youtu.be/bBC-nXj3Ng4 Thread for Q&A questions: http://3b1b.co/questions Several people have commented about how 2^256 would be the maximum number of attempts, not the average. This depends on the thing being attempted. If it's guessing a private key, you are correct, but for something like guessing which input to a hash function gives a desired output (as in bitcoin mining, for example), which is the kind of thing I had in mind here, 2^256 would indeed be the average number of attempts needed, at least for a true cryptographic hash function. Think of rolling a die until you get a 6, how many rolls do you need to make, on average? Music by Vince Rubinetti: https://vincerubinetti.bandcamp.com/album/the-music-of-3blue1brown ------------------ 3blue1brown is a channel about animating math, in all senses of the word animate. And you know the drill with YouTube, if you want to stay posted on new videos, subscribe, and click the bell to receive notifications (if you're into that). If you are new to this channel and want to see more, a good place to start is this playlist: http://3b1b.co/recommended Various social media stuffs: Website: https://www.3blue1brown.com Twitter: https://twitter.com/3Blue1Brown Patreon: https://patreon.com/3blue1brown Facebook: https://www.facebook.com/3blue1brown Reddit: https://www.reddit.com/r/3Blue1Brown
Views: 866521 3Blue1Brown
Encryption and decryption with openssl
 
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This is a tutorial showing how to use OpenSSL in linux systems (Kali in the video) for symmetric and assymetric encription and decription.
Views: 7048 NetSec
Top 5 most common hacking methods!
 
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top 5 most common hacking methods and algorithms ----------------------------------------------------------------------------------------------- Hacking has increased dramatically this past year, it has become a big concern for people , companies and governments. In this video we will introduce you top 5 most hacking algorithms which are used by hackers now a days. The purpose of this video is people awareness about hacking and security.Don't try any of them.In case, we are responsible and take it at your won risk! List of key words --------------------------------------------------------------------- How a hacker hacks computer? what are hacking algorithms? Top 5 most common hacking algorithms 5 most common ways of hacking. 5 ways that can hack. top 5 methods of hacking. methods of hacking. hacking methods. hacking algorithms. how to be aware of hacking? how to get rid of hacking? how to secure your personal information? Ethical hacking. white hack. black hack. Brute force algorithm. social engineering. keylogger. phishing. guessing. what is social engineering technique of hacking? what is brute force algorithm? what is phishing? what is guessing technique of hacking? how hackers find your password? how hackers crack password? Here are list of some videos which might be useful for you ---------------------------------------------------------------------------------------------- How to activate windows 10 pro easily and freely? https://youtu.be/KbwLWGKHeJg ------------------------------------------------------------------------------------ How to install Ubuntu 16.04 alongside windows? https://youtu.be/xzjhAHJ54SA -------------------------------------------------------------------------------- How to download Microsoft Toolkit freely? https://youtu.be/vN7O5GOgZMo ------------------------------------------------------------------------- How does a hacker's computer look like? https://youtu.be/3nL-T6HVYJc ========================================== Follow us on social medias: -------------------------------------------------------------------------------------------- Facebook: https://www.facebook.com/growwithcomp... Twitter : https://twitter.com/computer_trick Google + : https://plus.google.com/u/0/100033498... ==============================================
“Finding Partial Hash Collisions through Brute Force Parallel Programming”
 
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“Finding Partial Hash Collisions through Brute Force Parallel Programming” by Vincent (Chuck) Chiriaco (University of North Alabama), Aubrey Franzen (Northern Kentucky University) and Rebecca Thayil (Bryn Mawr College). Project: Cryptography. Mentored by Dr. Xiaowen Zhang. A cryptographic hash function is used in data integrity check, digital signature, authentication protocol, etc. A hash function compresses an arbitrary length message into a shorter fixed length digest, or hash value (i.e., fingerprint of the message). If two or more messages are hashed to the same or similar digest, we call this a partial collision. If a collision can be easily found, then the data integrity can be violated and digital signature can be easily forged. By brute force method using parallel programming techniques, students systematically find partial hash collisions for a given target message, i.e., finding other messages that have the similar digest as the digest of the target message.
Lecture 5: Data Encryption Standard (DES): Encryption by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Cryptoanalysis (Types Of Attacks On Cryptography)
 
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Full Video Details: http://www.securitytube.net/video/117
Views: 14447 TheSecurityTube
Short Key Cryptography
 
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Ciphertexts produced by any short key ciphers do commit to the single plaintext that generated them. No equivocation. This commitment is the basis for brute-force cryptanalysis, and also the basis for probability-modified, much more efficient, cryptanalysis. It condemns today's master ciphers (e.g. AES) to sustain ongoing erosion of their efficacy.
Views: 502 Gideon Samid
Hacking at Quantum Speed with Shor's Algorithm | Infinite Series
 
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Viewers like you help make PBS (Thank you 😃) . Support your local PBS Member Station here: https://to.pbs.org/donateinfi Classical computers struggle to crack modern encryption. But quantum computers using Shor’s Algorithm make short work of RSA cryptography. Find out how. Tweet at us! @pbsinfinite Facebook: facebook.com/pbsinfinite series Email us! pbsinfiniteseries [at] gmail [dot] com Previous Episode How to Break Cryptography https://www.youtube.com/watch?v=12Q3Mrh03Gk The Mathematics Behind Quantum Computers https://www.youtube.com/watch?v=IrbJYsep45E Additional Resources: Scott Aaronson's Blog (Great Intro to Shor's Alg.):: http://www.scottaaronson.com/blog/?p=208 Shor's Original Paper:: https://arxiv.org/abs/quant-ph/9508027v2 Lectures on Shor's Algorithm:: https://arxiv.org/pdf/quant-ph/0010034.pdf Decrypting secure messages often involves attempting to find the factors that make up extremely large numbers. This process is too time consuming for classical computers but Shor’s Algorithm shows us how Quantum Computers can greatly expedite the process. Written and Hosted by Kelsey Houston-Edwards Produced by Rusty Ward Graphics by Ray Lux Made by Kornhaber Brown (www.kornhaberbrown.com) Thanks to Spiros Michalakis for helpful discussions and feedback. Comments answered by Kelsey: Neon Bull https://www.youtube.com/watch?v=12Q3Mrh03Gk&lc=z135uxf5cxenutmxj04cc3swkvm4tpcrxik Bhargav R https://www.youtube.com/watch?v=12Q3Mrh03Gk&lc=z13qjjioozbjdrqyz04cevdrtu3ti3y5sq40k BobC https://www.youtube.com/watch?v=12Q3Mrh03Gk&lc=z12pjpzastylzz2qx04cjtc5jrq2y3yhmlk0k
Views: 169242 PBS Infinite Series
Caesar Cipher | Caesar Substitution Cipher | Cryptography series | Eng - Hindi | Tutorial-1
 
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#AskFaizan | #syedfaizanahmad Playfair Substitution Cipher https://youtu.be/w_xr7pj-O6c Monoalphabetic Substitution Cipher https://youtu.be/Hw1T7GOnVW0 Caesar Cipher | Caesar Substitution Cipher https://youtu.be/2N9GlhysYJw PlayList : Cryptography and Network Security : https://www.youtube.com/playlist?list=PLhwpdymnbXz7hvvqhqjIIG4tEdhAgQqll The Caesar cipher is one of the earliest known and simplest ciphers. It is a type of substitution cipher in which each letter in the plaintext is 'shifted' a certain number of places down the alphabet. For example, with a shift of 1, A would be replaced by B, B would become C, and so on. The method is named after Julius Caesar, who apparently used it to communicate with his generals. The algorithm can be expressed as For each plaintext letter p , substitute the ciphertext letter C C = E(k, p) = (p + k) mod 26 Where k takes on a value in the range 1 to 25. The decryption algorithm is simply p = D(k, C) = (C - k) mod 26 Drawbacks - Caesar Cipher is one of the weakest forms of encryption as The key space is very small. Using a brute force attack method, one could easily try all (25) possible combinations to decrypt the message without initially knowing the key. The language of the plaintext is known and easily recognizable. Cryptanalysis: Cryptanalytic attacks rely on the nature of the algorithm plus perhaps some knowledge of the general characteristics of the plaintext or even some sample plaintext–ciphertext pairs. Brute-force attack: The attacker tries every possible key on a piece of ciphertext until an intelligible translation into plaintext is obtained. On average, half of all possible keys must be tried to achieve success. #askfaizan | #syedfaizanahmad
Views: 285 Ask Faizan
Recover RSA private key from public keys - rhme2 Key Server (crypto 200)
 
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Using the greatest common divisor (GCD) to factorize the public modulo into the secret primes, so we can forge a RSA signature. Source for the rhme2 challenges: https://github.com/Riscure/Rhme-2016 -------------------------------------- Twitter: https://twitter.com/LiveOverflow Website: http://liveoverflow.com/ Subreddit: https://www.reddit.com/r/LiveOverflow/
Views: 36350 LiveOverflow
What is BRUTE-FORCE ATTACK? What does BRUTE-FORCE ATTACK mean?
 
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What is BRUTE-FORCE ATTACK? What does BRUTE-FORCE ATTACK mean? BRUTE-FORCE ATTACK meaning - BRUTE-FORCE ATTACK definition - BRUTE-FORCE ATTACK explanation. Source: Wikipedia.org article, adapted under https://creativecommons.org/licenses/by-sa/3.0/ license. In cryptography, a brute-force attack, or exhaustive key search, is a cryptanalytic attack that can, in theory, be used against any encrypted data (except for data encrypted in an information-theoretically secure manner). Such an attack might be used when it is not possible to take advantage of other weaknesses in an encryption system (if any exist) that would make the task easier. It consists of systematically checking all possible keys or passwords until the correct one is found. In the worst case, this would involve traversing the entire search space. When password guessing, this method is very fast when used to check all short passwords, but for longer passwords other methods such as the dictionary attack are used because of the time a brute-force search takes. When key guessing for modern cryptosystems, the key length used in the cipher determines the practical feasibility of performing a brute-force attack, with longer keys exponentially more difficult to crack than shorter ones. A cipher with a key length of N bits can be broken in a worst-case time proportional to 2N and an average time of half that. Brute-force attacks can be made less effective by obfuscating the data to be encoded, something that makes it more difficult for an attacker to recognize when the code has been cracked. One of the measures of the strength of an encryption system is how long it would theoretically take an attacker to mount a successful brute-force attack against it. Brute-force attacks are an application of brute-force search, the general problem-solving technique of enumerating all candidates and checking each one. The term "brute-force" is not the only term to name such a type of attack. It can also be called "bruteforce", "brute force" and just "brute" (that is common in names of programs that perform brute-force attacks).
Views: 2866 The Audiopedia
Cryptography - Caesar Cipher - Theory and Implementation
 
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Subscribe if you liked this, more crypto vids to come. This video talks about the Caesar Cipher (http://en.wikipedia.org/wiki/Caesar_cipher) and how to implement encryption in Python.
Views: 27156 Asib
Monoalphabetic Substitution Cipher | Monoalphabetic Cipher Tutorial | Cryptography series |
 
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#askfaizan | #syedfaizanahmad Playfair Substitution Cipher https://youtu.be/w_xr7pj-O6c Monoalphabetic Substitution Cipher https://youtu.be/Hw1T7GOnVW0 Caesar Cipher | Caesar Substitution Cipher https://youtu.be/2N9GlhysYJw PlayList : Cryptography and Network Security : https://www.youtube.com/playlist?list=PLhwpdymnbXz7hvvqhqjIIG4tEdhAgQqll A substitution technique is one in which the letters of plaintext are replaced by other letters or by numbers or symbols.1 If the plaintext is viewed as a sequence of bits, then substitution involves replacing plaintext bit patterns with ciphertext bit patterns. Instead, the “cipher” line can be any permutation of the 26 alphabetic characters, Then there are 26! or greater than 4x1026 possible keys. This is 10 orders of magnitude greater than the key space for DES and would seem to eliminate brute-force techniques for cryptanalysis. Such an approach is referred to as a monoalphabetic substitution cipher, Because a single cipher alphabet (mapping from plain alphabet to cipher alphabet) is used per message. A Monoalphabetic substitution cipher, relies on a fixed replacement structure. The substitution is fixed for each letter of the alphabet. Thus, if "a" is encrypted to "R", then every time we see the letter "a" in the plaintext, we replace it with the letter "R" in the ciphertext. If the cryptanalyst knows the nature of the plaintext (e.g., noncompressed English text), then the analyst can exploit the regularities of the language. #askfaizan
Views: 326 Ask Faizan
10 Best Password Cracking Tools 2018 Edition | Windows,Linux,Mac OS
 
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This Video is only for educational purpose.We don’t promote malicious and unethical practices. In this Video I will show you Top 10 Best Password Cracking Tools Of 2018.What is password cracking? In the field of cybersecurity and cryptography, password cracking plays a very major role. It’s basically the process of recovering passwords to breach the security of a computer system. You can easily relate it to repeatedly guessing your phone’s unlock pattern or pin. 1. John the Ripper John the Ripper is one of the most popular password cracking tools available around. This free password cracking tool is chiefly written in C programming language. Encompassing a customizable password cracker, John the Ripper comes as a combination of many password crackers into one suite. Download Link:- http://www.openwall.com/john/ 2. Aircrack-ng Aircrack-ng is one of the best password cracking tools that hackers use to bump their annoying neighbors off their own Wi-Fi. Note that just like John the Ripper, Aircrack-ng is not a single tool. Instead, it’s a complete software suite that’s used to play with Wi-Fi networks. Download Link:-https://www.aircrack-ng.org/downloads.html 3. RainbowCrack RainbowCrack makes use of rainbow tables to crack password hashes. Using a large-scale time-memory trade-off, RainbowCrack performs an advance cracking time computation. According to your convenience, you are free to use the command line or graphical interface of RainbowCrack. Once the pre-computation stage is completed, this top password cracking tool is about hundreds of times faster than a brute force attack. You also don’t need to prepare the rainbow tables yourselves. The developers have made different rainbow tables for LM, NTLM, MD5 and SHA1 available for free. Download Link:-http://project-rainbowcrack.com/ 4. Cain and Abel This renowned password cracking tool is a dependable software to recover various types of passwords using multiple techniques. Cain and Able lets you easily perform Dictionary, Brute-Force, and Cryptoanalysis attacks to crack encrypted passwords. This multi-purpose hacking tool also comes with the ability to sniff the networks, record VoIP conversations, recover network keys, decode scrambled passwords, and analyze routing protocols. Download Link:-http://www.oxid.it/cain.html 5. THC Hydra Compared to other top password cracking tools, THC Hydra performs hacking attacks using numerous network protocols, including the likes of Asterisk, FTP, HTTP-Proxy, MYSQL, XMPP, Telnet, and more. Using these protocols, THC Hydra performs super fast brute-force and dictionary attacks against a login page. Download Link:-https://www.thc.org/thc-hydra/ 6. HashCat HashCat claims to be the fastest and most advanced password cracking software available. Released as a free and open source software, HashCat supports algorithm like MD4, MD5, Microsoft LM hashes, SHA-family, MySQL, Cisco PIX, and Unix Crypt formats. Download Link:-https://www.thc.org/thc-hydra/ 7. Crowbar Crowbar is a brute forcing tool that’s widely popular in the pen testing scene. It gives you the control to decide what’s submitted to a web server. While most brute forcing tools use username and password to deploy SSH brute force, Crowbar makes use of SSH keys obtained during penetration tests. Download Link:-https://github.com/galkan/crowbar 8. OphCrack Just like RainbowCrack, OphCrack is another popular and free password cracking tool that uses rainbow tables to crack the password hashes. It’s widely used to crack Windows log-in passwords. Thanks to its ability to import and use hashes from multiple formats and sources, OphCrack is known to crack the passwords of a Windows computer in few minutes. Download Link:-http://ophcrack.sourceforge.net/download.php 9. L0phtCrack Just like OphCrack, L0phtCrack is known for easily cracking Windows passwords. Using a wide set of attacks like dictionary, hybrid, brute force, and rainbow tables, this password cracking tool can also be deemed useful in sniffing hashes. Download Link:-http://www.l0phtcrack.com/#download-form 10. DaveGrohl For Mac OS X, DaveGrohl is an open source password cracking tool that’s preferred by the Apple security experts. With a completely modern object-oriented codebase in Version 3.0, DaveGrohl has been made more useful for developers and users. Download Link:-https://github.com/octomagon/davegrohl ................................................................................................................ Hope You enjoyed this video if You found this video useful Then Don't Forget to like share and subscribe : https://goo.gl/JtgXPj For Security updates.... You can also follow on Facebook Page Link below and Don't Forget to subscribe my channel. Facebook : http://www.facebook.com/hkTech.net ................................................................................................................
Views: 11303 CITech Tutorials
Lecture 18: Digital Signatures and Security Services by Christof Paar
 
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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Fundamentals of Cryptography
 
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In this video, I explain the fundamentals concept of cryptography like types of crypt analysis, symmetric & asymmetric key algorithms, encryption & decryption process, overview of cryptography fundamentals, basic terminology used in cryptography, brute force attack, social engineering attack, implementation attack etc.. -~-~~-~~~-~~-~- Dear Friends please watch my video lecture and hit like, subscribes and don't forget to share with your friends. -~-~~-~~~-~~-~-
Views: 460 Kavita Jakhar
What is brute Force Attack || How it Works || Vinay Tech in Telugu
 
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Thanks for Watching Please Share this Video to your friends Please Subscribe for More Interesting Videos In Telugu
BRUTE FORCE PASSWORD CRACKER [PYTHON]
 
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Learn how to program a password cracker in python. This is purely theoretical, this will not help you get back into your Facebook or gmail account. GITHUB: https://github.com/zackscriven/password How Secure is your password? - Vsauce https://www.youtube.com/watch?v=U_nHZ3YGT3w&list=PLEC0A5E71DE1EDFCE&index=25 Encryption and HUGE Numbers - Numberphile https://www.youtube.com/watch?v=M7kEpw1tn50 Thanks for Watching! Follow me on Social media! LinkedIn | http://zscriv.com/LinkedIn Instagram | http://zscriv.com/Instagram Twitter | https://zscriv.com/Twitter
Views: 75944 Zack Scriven Media
Learn Public Key Cryptography in just 18 Minutes - Cryptography Tutorial
 
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+++See my latest video: Internet Security or Die+++ https://youtu.be/CzB5n6_pBfk Learn Public Key Cryptography in just 18 Minutes - Cryptography Tutorial In this Cryptography Tutorial, I teach you Public Key cryptography basics. Specifically I’m going to explain to you how the cryptography works, that allows you to do online shopping. We are so used to online shopping, a.k.a. e-commerce, that we take it for granted. But e-commerce would not be possible at all without public key cryptography. Not only will I explained to you the details of public-key cryptography and how that makes e-commerce possible, but I’m going to explain it in 15 minutes, and explain it without math, by using the Blackbox model. IMHO, cryptography basics should not include math. Cryptography explained with math simply muddies the waters to those without extensive math background. Let’s start by taking a brief look at Classic cryptography, which is been around for thousands of years. Classic cryptography is also called secret key cryptography or Symmetric cryptography. A cipher is some sort of a mathematical algorithm that we use to scramble text. In the blackbox model the cipher itself is the blackbox into which we input plaintext and the key. The plaintext is the message that we wish to encrypt and the key is simply a string of numbers, generally binary ones and zeros. The output we get from the blackbox is called ciphertext, which is the plaintext that has been encrypted in such a way that it can only be decrypted by someone that has the same key that originally encrypted the data in the first place. Some examples of Symmetric cryptography that are used today are DES, Triple DES & AES. These are the same as the ciphers used for thousands of years in that the same key encrypts and decrypts them. However the modern algorithm is much stronger. If we use of good cipher such as AES the only way an attacker can decrypt the ciphertext is to try every possible key, called a brute force attack. That is why the longer the key the more security you get. Now supposing Bob wants to buy something on the website Alice.com. He needs to make sure his personal information cannot be seen by anybody eavesdropping on his conversation over the public Internet. At first glance it seems easy enough for Bob to encrypt his plaintext personal information with Symmetric cryptography, using a secret key, send it across the Internet in an encrypted fashion, and then have Alice.com decrypt the information with the same secret key. The problem arises: how do Bob and Alice.com both get the same secret key, while making sure no one else gets the key? The answer is no one has ever thought of a very efficient way. In order to do this, a whole new type of encryption called public key encryption, a.k.a. Asymmetric encryption had to be invented first. In fact it was invented in the 1970s thousands of years after mankind first started using cryptography.
Views: 30316 Packethacks.com
Cryptography exhaustive search attacks
 
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Cryptography exhaustive search 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: 324 intrigano
Meet in the Middle Algorithm
 
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This tutorial talks about the Meet in the Middle algorithm used in competitive programming. It brings down the time complexity of a problem from O(a^b) to O(a^(b/2)). The example problems for finding elements in an array and 0-1 Knapsack are shown to be solved using Meet in the Middle.
Views: 6920 Gaurav Sen
Pest6c Rail Fence Brute force decryption
 
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I created this video with the YouTube Video Editor (http://www.youtube.com/editor)
What is BruteForce Attack | How to use it ??? (Hindi)
 
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Hello Dosto , My Name is Mitul V Patel And Welcome To Tech Mitra. Today We Have Talked About BruteForce Attack ,What is BruteForce Attack And How Brute-Force Attack Works?? Queries Solved : ------------------------- 1) what is brute Force Attack ? 2) how to do brute Force Attack ? 3) brute Force Attack software example 4) how to download brute Force software ? 5) what is brute Force in cryptography ? 6) what is brute Force in network security ? 7) what is brute Force Attack in Hindi ? 8) brute Force Attack on Facebook . 9) brute Force Attack on wifi . 10) brute Force Attack on caesar sipher . as so , i hope you like my video , if you like my video then go end hit the like button and subscribe this channel for more updates and for more technology videos... And If You Have Any Suggestions Then Please Comment me in The Comment section Below. Subscribe: https://www.youtube.com/techmitra For More Interesting updates like Facebook Page And Subscribe My Channel on YouTube ►Email : [email protected] ►Facebook Page : https://www.facebook.com/techmitraindia ►YouTube Channel :https://www.youtube.com/techmitra --------------------------------------------------------------------------------------------------------
Views: 200 Tech Mitra
Cracking 64bit RSA ( a few times :) )
 
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http://m.windowsitpro.com/security/64-bit-rc5-algorithm-finally-cracked 330k pc's and 4.8 years. Brute force eh, who'd do it.... Sorry about the sound. Yes it may take trillions of years to brute force an RSA key, but if you dont want to brute force it and just hack it, it only takes seconds. Watch........ Additional note. Cracked 256 bit in less than 2 mins. Video to follow
Views: 1411 Mick Press
How to Use Beginner Python to Build an SHA1 Hash Brute-Forcer
 
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Learn Beginner Python3 to Create Your Own Hacking Tools Full Tutorial: http://bit.ly/SHA1Brute Subscribe to Null Byte: https://goo.gl/J6wEnH In this episode, we'll take a beginner's perspective of creating our own Python program to take advantage of a vulnerability. We'll apply this by taking a look at how hashes work, and why some aren't as good as others for storing passwords. Follow Null Byte on: Twitter: https://twitter.com/nullbytewht Flipboard: http://flip.it/3.Gf_0
Views: 12292 Null Byte
Dictionary vs. Bruteforce Attacks - Explained
 
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A short video explaining the difference between dictionary and bruteforce attacks, in terms of cryptanalysis. This video is for educational purposes only.
Views: 34847 go4the101
Lecture 21 (update): SHA-3 Hash Function by Christof Paar
 
01:38:17
For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Lecture 3: Stream Ciphers, Random Numbers and the One Time Pad by Christof Paar
 
01:29:39
For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com
Cryptography-101 [01]   Basics of  CRYPTOGRAPHY - Overview (in Bangla)
 
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Cryptography-101 [01] Basics of CRYPTOGRAPHY - Overview (in Bangla/Bengali) === Overview Basic terminology Classifications Substitution and transposition techniques Brute force and Cryptanalysis attack Cryptanalysis attacks === Mohammad Mahmud kabir MahmudKabir.com
Views: 138 Mahmud Kabir

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