Advanced encryption standard
Thread Rating:
  • 0 Vote(s) - 0 Average
  • 1
  • 2
  • 3
  • 4
  • 5
nit_cal
Active In SP
**

Posts: 237
Joined: Oct 2009
#1
30-10-2009, 03:10 PM


Introduction
In cryptography, the Advanced Encryption Standard (AES), also known as Rijndael, is a block cipher adopted as an encryption standard by the us government, and is expected to be used worldwide and analysed extensively, as was the case with its predecessor, the Data encryption standard(DES). It was adopted by National institute of standard and technology(NIST) as US FIPS PUB 197 in November2001 after a 5-year standardisation process The cipher was developed by two Belgian cryptographers, Joan Daeman andVincent Rijamean, and submitted to the AES selection process under the name "Rijndael", a Portmanteau comprised of the names of the inventors. Rijndael can be pronounced "Rhine dahl", a long "i" and a silent "e" (IPA: [aindal]). In the sound file linked below, it is pronounced aindau]. AES is intended to be a stronger, more efficient successor to Triple Data Encryption Standard (3DES), which replaced the aging DES, which was cracked in less than three days in July 1998. "Until we have the AES, 3DES will still offer protection for years to come. So there is no need to immediately switch over," says Edward Roback, acting chief of the computer security division at NIST and chairman of the AES selection committee. "What AES will offer is a more efficient algorithm. . . . It will be a federal standard, but it will be widely implemented in the IT community." According to Roback, efficiency of the proposed algorithms is measured by how fast they can encrypt and decrypt information, how fast they can present an encryption key and how much information they can encrypt. "There are actually maximum thresholds that you can get if you have high data feeds, (and) 3DES can't accommodate them," says Roback. The AES review committee is also looking at how much space the algorithm takes up on a chip and how much memory it requires. Roback says the selection of a more efficient AES will also result in cost savings and better use of resources. "DES was designed for hardware implementations, and we are now living in a world of much more efficient software, and we have learned an awful lot about the design of algorithms," says Roback. "When you start multiplying this with the billions of implementations done daily, the saving on overhead on the networks will be enormous."

.pdf   Advanced encryption standard.pdf (Size: 213.8 KB / Downloads: 108)
Use Search at http://topicideas.net/search.php wisely To Get Information About Project Topic and Seminar ideas with report/source code along pdf and ppt presenaion
Reply
seminar ideas
Super Moderator
******

Posts: 10,003
Joined: Apr 2012
#2
08-05-2012, 05:27 PM

Advanced Encryption Standard



.ppt   AES.ppt (Size: 252 KB / Downloads: 45)


Advanced Encryption Standard



Adopted by National Institute of Standards and Technology (NIST) on May 26, 2002.
AES is a simple design, a high speed algorithm, with low memory costs.
AES is a symmetric block cipher.
The same key is used to encrypt and decrypt the message.
The plain text and the cipher text are the same size.


Security


Assuming that one could build a machine that could recover a DES key in a second (i.e., try 255 keys per second), then it would take that machine approximately 149 thousand-billion (149 trillion) years to crack a 128-bit AES key. To put that into perspective, the universe is believed to be less than 20 billion years old.


AES Algorithm - MixColumns


This with shift rows provides diffusion
The columns are considered polynomials over GF(28) and multiplied modulo x4+1 with a(x) where a(x) = {03}x3 + {01}x2 + {01}x + {02} NOTE: x4+1 is relatively prime to a(x)
a’j  (aj*a(x))mod(x4+1)
This can also be written as matrix multiplication.


Types of Side Channel Attacks


Timing Attacks – Watches movement of data in and out of the CPU or memory.
It is difficult to retrieve an array element in a time that is not dependent on the index value.
Power Attacks – Watches power consumption by CPU or memory.
Changing one bit requires considerably less power than changing all bits in a byte.




Reply

Important Note..!

If you are not satisfied with above reply ,..Please

ASK HERE

So that we will collect data for you and will made reply to the request....OR try below "QUICK REPLY" box to add a reply to this page

Quick Reply
Message
Type your reply to this message here.


Image Verification
Please enter the text contained within the image into the text box below it. This process is used to prevent automated spam bots.
Image Verification
(case insensitive)

Possibly Related Threads...
Thread Author Replies Views Last Post
  XML encryption full report computer science technology 7 6,651 24-03-2014, 02:31 PM
Last Post: seminar project topic
  Advanced JavaScript Second Edition project girl 2 704 22-03-2014, 12:52 AM
Last Post: MichaelKa
  International Data Encryption Algorithm Report study tips 0 530 22-08-2013, 04:55 PM
Last Post: study tips
  VLSI Realization of a Secure Cryptosystem for Image Encryption and Decryption pdf study tips 0 521 20-08-2013, 04:51 PM
Last Post: study tips
  Go, The Standard Library study tips 0 291 18-06-2013, 01:02 PM
Last Post: study tips
  BLOWFISH ALGORITHM ENCRYPTION PPT study tips 0 418 14-06-2013, 02:49 PM
Last Post: study tips
  Applying Encryption Algorithm for Data Security and Privacy in Cloud Computing pdf study tips 0 347 05-06-2013, 03:47 PM
Last Post: study tips
  A Lightweight High-Performance Fault Detection Scheme for the Advanced Encryption study tips 0 333 06-05-2013, 04:58 PM
Last Post: study tips
  AES: The Advanced Encryption Standard study tips 0 352 17-04-2013, 04:34 PM
Last Post: study tips
  A SEMINAR REPORT ON DATA ENCRYPTION PPT study tips 0 493 04-03-2013, 11:44 AM
Last Post: study tips