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AES algorithm is the Block Cipher Symmetric Algorithm Block Size is 128 bits Key Size is 128 bits ( 4 words or 16 Bytes ) Sub Key Size is 1 Word (32 bit) Number of Sub keys 44 Words Number of Rounds 10 Cipher Text Size is 128 bits

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AES – Advanced Encryption Standard - Structure, Encryption Process, Round Key Size Relation - Hindi #AES Lecture in Hindi Computer Network Security(CNS) Lectures – Internet Security

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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com. The AES book chapter for this video is also available at the web site (click Sample Chapter).

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AES has swept away old faithful DES, and is now the workhorse of business and government cryptography. Our entire civil order relies on its integrity. Here we explain how it works, and discover how a string of simple crypto primitives combine to such a robust cipher for which no mathematical compromise was ever published.
Views: 120428 Gideon Samid

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Many years ago I came across a clickable flash animation that explained how the Rijndael cipher works. And even though Rijndael is pure, complex math, the animated visualizations made the whole process so crystal clear that I had to bend down to the floor afterwards to pick up my dropped jaw. Since then I know how powerful animated visualizations can be, even (or rather especially) for abstract and/or complex topics. When I started my Go blog, I knew I had to use animations because they are worth a thousand words. I did the same in my Go videos that you can find over here in my channel, and also in my Go course. This video is a recoding of the flash animation while I click through it. The flash animation is still available at formaestudio.com (link below), but no sane browser would agree to play any flash content anymore, so a video capture is the best we can get. I hope the pace of clicking through the steps is just right for you. NOTE: The video has no audio part. This is not a bug, the Flash animation simply had no sounds. The Rijndael Animation (and another Flash program called Rijndael Inspector): http://www.formaestudio.com/rijndaelinspector/ (c) Enrique Zabala. License terms: "Both these programs are free of use." (I guess that publishing a video of the animation is covered by these terms.) My blog: https://appliedgo.net My course: https://appliedgo.com/p/mastergo
Views: 21008 AppliedGo

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-~-~~-~~~-~~-~- Please watch: "PL vs FOL | Artificial Intelligence | (Eng-Hindi) | #3" https://www.youtube.com/watch?v=GS3HKR6CV8E -~-~~-~~~-~~-~-

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Views: 184606 Eddie Woo

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Views: 14825 Talha Naseem

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A beginner's guide to Polygraphic Ciphers, Part 2. (Hill Ciphers Examples/Encryption/Decryption)
Views: 102827 Daniel Rees

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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: 3777 Udacity

41:00
AES Steps: Substitute Bytes, Shift Rows, Mix Columns, GF Arithmetic
Views: 10863 Natarajan Meghanathan

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Crypography Algorithm helps in making our data secure while transmitting on internet. To do that we can follow number of method. 1. Symmetric key or Secret key DES: Data encryption standard Triple DES AES: Advanced encryption standard 2. Asymmetric key or public key RSA : Divest Shamir and Adleman Duffie- Hellman Solved example: UGC NET July 2013 exam questions

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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: 14338 Udacity

01:30:50
For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com

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Previous video: https://youtu.be/mfJUhvvVm3A Next video: https://youtu.be/-RdG8ZHc1NI
Views: 972 Leandro Junes

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This is a short vid which shows the code for the matrix multiplication for the MixColumns step. I initially intended to make this vid and the previous AES one around the same length, but we actually covered almost everything in the previous vid! Mix Columns Wikipedia Page: https://en.wikipedia.org/wiki/Rijndael_mix_columns Code for dot products: tmp[0] = (unsigned char)(mul2[state[0]] ^ mul3[state[1]] ^ state[2] ^ state[3]); tmp[1] = (unsigned char)(state[0] ^ mul2[state[1]] ^ mul3[state[2]] ^ state[3]); tmp[2] = (unsigned char)(state[0] ^ state[1] ^ mul2[state[2]] ^ mul3[state[3]]); tmp[3] = (unsigned char)(mul3[state[0]] ^ state[1] ^ state[2] ^ mul2[state[3]]); tmp[4] = (unsigned char)(mul2[state[4]] ^ mul3[state[5]] ^ state[6] ^ state[7]); tmp[5] = (unsigned char)(state[4] ^ mul2[state[5]] ^ mul3[state[6]] ^ state[7]); tmp[6] = (unsigned char)(state[4] ^ state[5] ^ mul2[state[6]] ^ mul3[state[7]]); tmp[7] = (unsigned char)(mul3[state[4]] ^ state[5] ^ state[6] ^ mul2[state[7]]); tmp[8] = (unsigned char)(mul2[state[8]] ^ mul3[state[9]] ^ state[10] ^ state[11]); tmp[9] = (unsigned char)(state[8] ^ mul2[state[9]] ^ mul3[state[10]] ^ state[11]); tmp[10] = (unsigned char)(state[8] ^ state[9] ^ mul2[state[10]] ^ mul3[state[11]]); tmp[11] = (unsigned char)(mul3[state[8]] ^ state[9] ^ state[10] ^ mul2[state[11]]); tmp[12] = (unsigned char)(mul2[state[12]] ^ mul3[state[13]] ^ state[14] ^ state[15]); tmp[13] = (unsigned char)(state[12] ^ mul2[state[13]] ^ mul3[state[14]] ^ state[15]); tmp[14] = (unsigned char)(state[12] ^ state[13] ^ mul2[state[14]] ^ mul3[state[15]]); tmp[15] = (unsigned char)(mul3[state[12]] ^ state[13] ^ state[14] ^ mul2[state[15]]); Music Channel: Sober: https://youtu.be/Y2LCg3cGu7U Gold Digger: https://youtu.be/wAoXB8tg0co Become a patron and support What's a Creel programming vids on Patreon: www.patreon.com/whatsacreel FaceBook: www.facebook.com/pages/WhatsaCreel/167732956665435
Views: 17502 What's a Creel?

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DES algorithm follows the Feistel Structure Most of the Block cipher algorithms follows Feistel Structure BLOCK SIZE - 64 bits Plain Text No. of Rounds - 16 Rounds Key Size - 64 bits Sub Key Size - 48 bits No. of Sub Keys - 16 Sub Keys Cipher Text - 64 bits

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#rsa #deffiehellman #cryptographylectures #lastmomenttuitions Take the Full Course of Cryptography and Network Security What we Provide 1) 20 Videos (Index is given down) + More Update will be Coming Before final exams 2)Hand made Notes with problems for your to practice 3)Strategy to Score Good Marks in Cryptography and Network Scurity To buy the course click https://goo.gl/mpbaK3 if you have any query email us at [email protected] Sample Notes : https://goo.gl/Ze1FpX or Fill the form we will contact you https://goo.gl/forms/2SO5NAhqFnjOiWvi2 Cryptography and System Security Index Lecture 1 Introduction to Cryptography and Security System Lecture 2 Security Goals and Mechanism Lecture 3 Symmetric Cipher Lecture 4 Substitution Cipher Lecture 5 Transposition Cipher Lecture 6 Stream and Block Cipher Lecture 7 Mono Alphabetic Cipher Lecture 8 Poly Alphabetic Cipher Lecture 9 Diffie Hellman Lecture 10 RSA Algorithm with Solved Example Lecture 11 IDEA Algorithm Full Working Lecture 12 SHA-1 Algorithm Full Working Lecture 13 Blowfish Algorithm Full working Lecture 14 DES Algorithm Full Working Lecture 15 Confusion and Diffusion Lecture 16 AES Algorithm Full working Lecture 17 Kerberos Lecture 18 Malicious Software ( Virus and worms ) Lecture 19 DOS and DDOS Attack Lecture 20 Digital Signature Full working Explained More videos Coming Soon.
Views: 261317 Last moment tuitions

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In this lecture series, you will be learning about cryptography basic concepts and examples related to it. Elliptic Curve (ECC) with example (ECC) with example.
Views: 18499 Eezytutorials

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This lesson explains how to encrypt and decrypt a message using a transposition cipher. Site: http://mathispower4u.com
Views: 59148 Mathispower4u

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For slides, a problem set and more on learning cryptography, visit www.crypto-textbook.com

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Views: 4131 Internetwork Security

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Views: 944899 3Blue1Brown

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RSA Public Key Encryption Algorithm (cryptography). How & why it works. Introduces Euler's Theorem, Euler's Phi function, prime factorization, modular exponentiation & time complexity. Link to factoring graph: http://www.khanacademy.org/labs/explorations/time-complexity
Views: 545978 Art of the Problem

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How does public-key cryptography work? What is a private key and a public key? Why is asymmetric encryption different from symmetric encryption? I'll explain all of these in plain English! 🐦 Follow me on Twitter: https://twitter.com/savjee ✏️ Check out my blog: https://www.savjee.be 👍🏻 Like my Facebook page: https://www.facebook.com/savjee

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Video 16 - "Cryptography Algorithms and Protocols" - This second nugget of the Cryptography domain lays out hashing concepts and algorithms like MD5 and SHA. Basic algorithms and encryption concepts are explored including: DES, 3DES, RSA, PGP, Elliptic curve (ECC), AES/AES256, One time pad, SSL/TLS, S/MIME, and PPTP/L2TP.
Views: 13008 SwampTarts

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DES Analysis, Double(2 DES), Triple(3 DES) - Data Encryption Standard in Hindi #DES Computer Network Security(CNS) Lectures – Internet Security

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https://8gwifi.org/CipherFunctions.jsp Reference book: http://leanpub.com/crypto Computer Security, Cryptography Advanced Encryption Standard AES,fips 197 The Advanced Encryption Standard (AES) specifies a FIPS-approved cryptographic algorithm that can be used to protect electronic data. The AES algorithm is a symmetric block cipher that can encrypt (encipher) and decrypt (decipher) information. Encryption converts data to an unintelligible form called ciphertext; decrypting the ciphertext converts the data back into its original form, called plaintext. The AES algorithm is capable of using cryptographic keys of 128, 192, and 256 bits to encrypt and decrypt data in blocks of 128 bits. aes encryption and decryption aes encryption example aes encryption tutorial aes encryption online aes algorithm, aes encryption explained, aes algorithm tutorial, aes encryption and decryption algorithm, aes encryption algorithm, aes algorithm lecture, aes algorithm example, aes cryptography, aes encryption and decryption algorithm
Views: 149479 Zariga Tongy

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Views: 463631 itfreetraining

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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: 22487 Udacity

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https://8gwifi.org/CipherFunctions.jsp Reference book: http://leanpub.com/crypto Cryptographic Algorithms generally fall into one of two different categories, or are a combination of both. Symmetric Fast Only provide confidentiality Examples: DES, AES, Blowfish, RC4, RC5 Asymmetric Large mathematical operations make it slower than symmetric algorithms No need for out of band key distribution (public keys are public!) Scales better since only a single key pair needed per individual Can provide authentication and nonrepudiation Examples: RSA, El Gamal, ECC, Diffie-Hellman problem with symmetric key cryptography DES (Data Encryption Standard) 64 bit key that is effectively 56 bits in strength Actual algorithm is called DEA (Data Encryption Algorithm) DES Modes Electronic Code Book Cipher Block Chaining (most commonly used for general purpose encryption) Cipher Feedback Output Feedback Counter Mode (used in IPSec) 3DES 112-bit effective key length Uses either 2 or 3 different smaller keys in one of several modes Modes EEE2/3 EDE2/3 AES NIST replaced DES in 1997 with this Uses the Rijndael algorithm Supports key/block sizes of 128, 192, and 256 bits Uses 10/12/14 rounds as block size increases IDEA (International Data Encryption Algorithm) Operates on 64 bit blocks in 8 rounds with 128 bit key Considered stronger than DES and is used in PGP Blowfish 64 bit block cipher with up to 448 bit key and 16 rounds Designed by Bruce Schneier RC4 Stream cipher with variable key size created by Ron Rivest RC5 Another Rivest cipher Block cipher with 32/64/128 bit blocks and keys up to 2048 bits RC6 Beefier version of RC5 submitted as AES candidate CAST 64 bit block cipher with keys between 40-128 bits with 12-16 rounds depending on key length CAST-256 used 128-bit blocks and keys from 128-256 bits using 48 rounds SAFER (Secure and Fast Encryption Routine) Set of patent-free algorithms in 64 and 128 bit block variants Variation used in Bluetooth Twofish Adapted version of Blowfish with 128 bit blocks, 128-256 bit keys and 16 rounds AES Finalist Kryptografie mit symmetrischem Schlüssel symmetric key cryptography symmetric key cryptography tutorial symmetric key cryptography example symmetric key cryptography vs asymmetric key cryptography symmetric and asymmetric key cryptography symmetric key cryptography Kryptografie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptographie mit symmetrischem Schlüssel Kryptografie mit symmetrischem Schlüssel und asymmetrische Schlüsselkryptographie symmetrische und asymmetrische Schlüsselkryptographie Kryptografie mit symmetrischem Schlüssel
Views: 40337 Zariga Tongy

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Views: 14904 Ryan Riley

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Fundamental concepts of Advanced Encryption Standard are discussed. Basic structure of AES is presented. AES Decryption is explained. AES Structure AES Round Function AES Key Expansion AES Decryption
Views: 5606 Scholartica Channel

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Views: 11037 Internetwork Security

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Blowfish Encryption Algorithm in Hindi - SubKey Generation, Working of Algorithm, Blowfish Function Steps #Blowfish Encryption Algorithm Computer Network Security(CNS) Lectures – Internet Security

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DES Introduction, General Structure, DES Function, DES Key Generation, DES Rounds - Hindi Data Encryption Standard(DES) Lectures in Hindi #DES Computer Network Security(CNS) Lectures – Internet Security

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How do we exchange a secret key in the clear? Spoiler: We don't - Dr Mike Pound shows us exactly what happens. Mathematics bit: https://youtu.be/Yjrfm_oRO0w Computing Limit: https://youtu.be/jv2H9fp9dT8 https://www.facebook.com/computerphile https://twitter.com/computer_phile This video was filmed and edited by Sean Riley. Computer Science at the University of Nottingham: https://bit.ly/nottscomputer Computerphile is a sister project to Brady Haran's Numberphile. More at http://www.bradyharan.com
Views: 193024 Computerphile

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RSA Algorithm is the example for Public Key Encryption algorithm. Here we are supposed to find two keys 1) Public Key which is used at encryption 2) Private Key which is used at decryption step 1: Select two large Primes P , Q Step 2: Calculate n=P*Q & O(n) = (P-1)*(Q-1) Step 3: Assume e and d (Public and Private Key). Step 4: Encrypt the Plain Text using Public Key e. Step 5: Decrypt the Cipher Text using Private Key d.

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Views: 603 Dr. Julian Hosp

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In this video I'm explaining what is that Galois Counter Mode that provides Authenticated Encryption with Associated Data (AEAD). You must have heard it combined with AES, and maybe used in TLS, ... This is just a small explanation, you can get more on the NIST specs. Errata (thanks to Casper Kejlberg-Rasmussen in the comments) error at 11:21, the last M_H that is applied before going into the TAG should not be there if you compare your drawing to the diagram on https://en.wikipedia.org/wiki/Galois/Counter_Mode. Be sure to follow me on twitter :) https://twitter.com/lyon01_david and to subscribe to my blog! http://www.cryptologie.net Cheers!
Views: 17993 David Wong

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Understand in details the complete description of DES.

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Views: 1015473 Numberphile

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Example of key generation and encryption using simplified DES. Lecture 5 of CSS322 Security and Cryptography at Sirindhorn International Institute of Technology, Thammasat University. Given on 26 November 2013 at Bangkadi, Pathumthani, Thailand by Steven Gordon. Course material via: http://sandilands.info/sgordon/teaching
Views: 41578 Steven Gordon

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DES -- Data Encryption Standard -- has been the workhorse of modern cryptography for many decades. It has never been compromised mathematically (not in the open literature, at least), yet, its design notes were never made public either. Many who use it are unaware of how it works. Here we open the DES box and find inside a repetition of sub-boxes in which very simple primitives are at work: substitution, transposition, split, concatenation, and bit-wise operation. DES inside teaches us that complexity is comprised of a lot of simplicity.
Views: 141163 Gideon Samid

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Views: 28950 CoastRD

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This video shows the process (thoroughly) of how to find the key when you don't have it. English alphabet frequencies: http://www.math.cornell.edu/~mec/2003-2004/cryptography/subs/frequencies.html Decryption (known key): http://youtu.be/oHcJ4QLiiP8 Encryption: http://youtu.be/izFivfLjD5E
Views: 120458 Theoretically

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Views: 111416 Eddie Woo

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CRYPTOGRAPHIC ALGORITHMS 1.ENCRYPTION ALGORITHMS 2.AUTHENTICATION ALGORITHMS 3.DIGITAL SIGNATURE ALGORITHMS.

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