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Question

How to apply DES Sbox 1?

Hi. I want to apply DES Sbox1. S-box1= [ 14 4 13 1 2 15 11 8 3 10 6 12 5 9 0 7 ... 0 15 7 4 14 2 13 1 10 6...

8 months ago | 1 answer | 0

### 1

answerQuestion

How to replace duplicate elements with the elements of the second array?

Hi , I have two arrays , one with duplicate elements and I want to keep the first occurance of the element and replace other rep...

1 year ago | 2 answers | 0

### 2

answersQuestion

How to keep only a new modification in an array using for loop?

Hello, I have an array named 'a' cocsists of ones and zeros. What I want is If an entry is zero , make it 1 and store the whol...

1 year ago | 1 answer | 0

### 1

answerQuestion

Image hiding inside an image

Hello, I am trying to hide an image inside an image taking one row of the secret image at a time. input = imread('peppers.png'...

1 year ago | 1 answer | 0

### 1

answerQuestion

Error in concatination in binary values

Hi, I am trying to concatinate the two 4-bit binary values to get 8 -bit value and then I have to convert it into decimals. But ...

1 year ago | 2 answers | 0

### 2

answersQuestion

How to write values in a single array

a=[11 23 165 200 213]; a1=de2bi(a,8,'left-msb'); out1=[]; for i=1:length(a) k= mat2cell(a1(i,:),1,[4,4]); k...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to apply S-box on input data?

Hello, I have an S-box and I want to pass few numbers through S-box if x=0,1,2,3,4,5,6,7 then S-box(x)=0,1,3,6,7,4,5,2 A=0:7...

1 year ago | 1 answer | 0

### 1

answerQuestion

How to get all possible permutations in binary format?

Hello, I want to get possible permutation of the vector v which actually contains a boolean values. Suppose the first permutatio...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to run randperm command for 100 times and store these permutations

Hi, I want to run randperm command to generate different permutations and save these permutation . The following code oly shows ...

2 years ago | 1 answer | 0

### 1

answerQuestion

Multiple lines to write using fid open

I have a matrix and some operation is performed on the rows e.g average of each row. I want to store those rows whose average is...

2 years ago | 1 answer | 0

### 1

answerQuestion

Nested for loop for multipication

Hello I am trying to multiply columns of Matrix E with numbers 1 till 5. Columns are taken one by one named as G. When I multipl...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to write disjoint cycles in matlab?

a and b are from S-16 permutation written as disjoint cycle a=(1 3 5 7 9 11) b=(2 4 6 8 10 12 14) . %disjoint cycles a=(1 3 ...

2 years ago | 0 answers | 0

### 0

answersQuestion

How to calculate permutation powers

I have to find higher powers of a permutation. For example if M is a given permutation , then to calculate M^11 M= [ 1 2 ...

2 years ago | 2 answers | 0

### 2

answersQuestion

How to write cyclic permutation as an array in matlab?

I have disjoint permutation cycles such as (1 4 6 2 5 7 8 3)(9 10) means 1 comes under 4th position, 4 will be at 6th position...

2 years ago | 1 answer | 0

### 1

answerQuestion

How to write Multiple data in a single .txt files

Hi I want to write two different outputs in a single .txt file . for example The following code works well . I want to add one...

3 years ago | 0 answers | 0

### 0

answersQuestion

How to map Boolean functions

hi I have elements from 0 to 15 in binary form named as tab1, f is the boolean function s=[0,1,2,3,4,5,6,7,8,9,..15] %% binary ...

3 years ago | 1 answer | 0

### 1

answerQuestion

Error in Chaotic attracter

Hi I am trying to plot the following equations t_n = c - 6/(1+x_n ^2 + y_n^2); w_n+1 =1+u*(w_n*cos(t_n)-s_n*sin(t_n)); s_n+...

3 years ago | 0 answers | 0

### 0

answersQuestion

Error in fprint command

Hi. here is part of my code. i am getting error in f print command. The code and error message is also attached. If any one can ...

3 years ago | 1 answer | 0

### 1

answerQuestion

Matlab Function returns values

Hi. I have written a function which should return two sequences but it returns only single sequence. I have attached the code be...

3 years ago | 1 answer | 0

### 1

answerQuestion

Permutation based on array indices

Hi. I want to permute elemnts of a row matrix w.rt to anothe matrix of the same dimension. Below is the part of the code but it ...

3 years ago | 1 answer | 0

### 1

answerQuestion

Array element containing infinity

Hi. I have a problem in array indexing containing infinity. I have to compute the function f(a)=1-1/a mod 13 . It takes values ...

3 years ago | 0 answers | 0

### 0

answersQuestion

How to permute binary numbers to a specific permutation

Hi I have numbers in binary form. I want to permute to 1 digit to right so that a new binary value is created. 0 F=[0 6 2 5 4...

3 years ago | 1 answer | 0

### 1

answerQuestion

Row and Column permutation of a matrix

Hi I want to permute each row and column of the matrix using specified permutation e.g %%%%%Permute each row by a certain perm...

3 years ago | 1 answer | 0

### 1

answerQuestion

Error in If else statement

Hi I am getting error in if else statement but dont know where is the mistake. Points=[]; for i=1:257 if i == 16 & i =...

3 years ago | 1 answer | 0

### 1

answerQuestion

Generating matrix from another array

I am tring to generate a matrix S1,S2,S3 from an array E3 . All three matrices should contain numbers from 0 to 25 but in the ...

3 years ago | 1 answer | 0

### 1

answerQuestion

How to multiply one elements with rest of the elements in Galois field

Hi, I am working in Galois field, The generated field is GF( 2^4) p=2; n=4; poly=[1 1 0 0 1]; field1=gftuple([-1:p^n-2]',pol...

3 years ago | 0 answers | 0

### 0

answersQuestion

Bit xor of row with the next row and the output is again xored with the next row

Hi, I have a image and I want to xor first row with single number then Xor 2nd row with first, the output is xored aith the next...

3 years ago | 1 answer | 0

### 1

answerQuestion

Bit xor of two binary strings and conversion into decimal

Hi, I have two large binary strings (e.g 256 bits each), then how to perform bit Xor operation and then convert the answer into...

3 years ago | 2 answers | 0

### 2

answersQuestion

Dna encoding rule1

Hi I have an issue storing the DNA sequenc using for loop. If some one can help me. x=[2 34 50 21]; [m n]=size(x); mn=m*n; P...

3 years ago | 0 answers | 0

### 0

answersQuestion

Addition of two DNA sequenc

Hi, I have a problem in DNA addition %%%%%%DNA addition P_ DNA1='ACAAGGGTTTAAACCCTTAC'; P_DNA2='TTTTGGGAAATGTGACAT...

3 years ago | 1 answer | 0