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Title: implementation of des in c
Page Link: implementation of des in c -
Posted By: pedadamahesh
Created at: Tuesday 25th of January 2011 03:26:20 PM
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plzzz help me... i need c code for des..thank u in advance ....etc
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Title: Data Encryption Standard DES
Page Link: Data Encryption Standard DES -
Posted By: seminar class
Created at: Tuesday 22nd of February 2011 02:17:43 PM
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Data Encryption Standard (DES)
• Financial companies found the need for a cryptographic algorithm that would have the blessing of the US government (=NSA)
• First call for candidates in May 73, followed by a new call in August 74
• Not very many submissions (Why?)
– IBM submitted Lucifer
• NSA worked with IBM in redesigning the algorithm
DES
• DES became a federal standard in November 76
– NBS (NIST) hardware standard in January 77
– ANSI X3.92-1981 (hardware + software)
– ANSI X3.106 ....etc
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Title: c code to implement des algorithm
Page Link: c code to implement des algorithm -
Posted By: pradips
Created at: Wednesday 10th of August 2011 03:33:54 PM
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c code to implement des algorithm,also substitution and transposition ....etc
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Title: program in c to implement s des algorithm
Page Link: program in c to implement s des algorithm -
Posted By:
Created at: Saturday 13th of April 2013 05:11:48 PM
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S-DES Algorithm:-
Encryption:- Encryption algorithm takes an 8-bit block of plaintext and 10-bit key as input and produce an 8-bit block of ciphertext as output.
1. Encryption algorithm involves five functions:
1) an initial permutation function (IP)
2) a complex function (fk) which involves both substitution and permutation
3) a simple permutation function (SW) that switches two halves of data
4) the function f again
5) a permutation function that is the inverse of the initial permutation(IP-1).
2. The function fk takes as i ....etc
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Title: Implementation of Des Algorithm
Page Link: Implementation of Des Algorithm -
Posted By: nit_cal
Created at: Friday 30th of October 2009 07:17:26 PM
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Abstract
To encrypt a text _le and to decrypt the encrypted form of the _le to get the original input text _le. This encryption and decryption is done using the most widely used private key encryption scheme based on data encryption standard (DES) adopted in 1977 by National Bureau of Standards.It was designed by IBM based on their own Luci_er cipher and input from NSA.For DES, data are encrypted in 64-bit blocks using a 56-bit key. The algorithm transforms 64-bit input in series of steps into a 64-bit output of cipher text. The same steps, w ....etc
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Title: The DES Algorithm Illustrated
Page Link: The DES Algorithm Illustrated -
Posted By: seminar addict
Created at: Tuesday 24th of January 2012 02:59:16 PM
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The DES Algorithm Illustrated
Some Preliminary Examples of DES
DES works on bits, or binary numbers--the 0s and 1s common to digital computers. Each group of four bits makes up a hexadecimal, or base 16, number. Binary 0001 is equal to the hexadecimal number 1, binary 1000 is equal to the hexadecimal number 8, 1001 is equal to the hexadecimal number 9, 1010 is equal to the hexadecimal number A, and 1111 is equal to the hexadecimal number F.
How DE ....etc
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Title: The Study and Application of Integrating Axiomatic Design and TRIZ for Conceptual Des
Page Link: The Study and Application of Integrating Axiomatic Design and TRIZ for Conceptual Des -
Posted By: project report helper
Created at: Wednesday 13th of October 2010 01:49:28 PM
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The Study and Application of Integrating Axiomatic Design and TRIZ for Conceptual Design
Qihua Tian ∗a,b, Yifang Zhong a , Renbin Xiao a , Yixian Du b , Hongmei Yang b
aCAD Center, School of Mechanical Science & Engineering, HuaZhong University of Science and Technology, Wuhan, P.R. China
b
College of Mechanical & Material Engineering, China Three Gorges University, Yichang, P.R.China
Abstract:
AD(Axiomatic Design) and TRIZ(Theory of Inventive Problem Solving) are widely used in conceptual ....etc
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Title: write c program to implement des algorithm logic
Page Link: write c program to implement des algorithm logic -
Posted By:
Created at: Monday 08th of October 2012 01:05:37 PM
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write c program to implement DES algorithm logic ....etc
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Title: Performance Analysis of SAFER and Triple DES security algorithms
Page Link: Performance Analysis of SAFER and Triple DES security algorithms -
Posted By: seminar class
Created at: Friday 06th of May 2011 12:36:23 PM
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Performance Analysis of SAFER+ and Triple DES security algorithms for Bluetooth Security Systems
Abstract
In this paper, comparison of the SAFER+encryption algorithm and Triple DES algorithm forBluetooth security systems is done. Performance of theabove security algorithms are evaluated based on theefficiency of the algorithm. The whole design wascaptured entirely in matlab. In order to check theefficiency of the algorithm, noise is being added to theencrypted data and the output is seen to be obtainedwithout any incorrectness which ....etc
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Title: Implement DES Algorithm
Page Link: Implement DES Algorithm -
Posted By: smart paper boy
Created at: Wednesday 10th of August 2011 02:13:30 PM
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Program for DES
#include
#include
void main()
{
int a,b,c,i,j,k,l,m,n,x1;
int p,q,r,s,d,y,e,z=0;
clrscr();
printf(\n Enter the plain Text number:\n);
scanf(%d,&n);
printf(\n Enter the key number \n);
scanf(%d,&k);
printf(\n Enter the bit stream \n);
for(i=0;i
{
scanf(%d,&a);
}
p=n\2;
x1=p-k;
for(i=0;i<=x1;i++)
{
c=0;
z++;
}
z=z-1;
printf(\n Enter the Key bit Stream\n);
fo ....etc
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