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Oduvanchick [21]
2 years ago
14

Network forensic analysis. A network forensic analyst is responsible for identifying worms, viruses, and infected nodes in the c

omputer network. A new methodology for finding patterns in data that signify infections was investigated in IEEE Transactions on Information Forensics and Security (May 2013). The method uses multiple filters to check strings of information. For this exercise, consider a data string of length 4 bytes (positions), where each byte is either a 0 or a 1 (e.g., 0010 ). Also, consider two possible strings, named and In a simple single filter system, the probability that and differ in any one of the bytes is .5. Derive a formula for the probability that the two strings differ on exactly of the 4 bytes. Do you recognize this probability distribution?
Computers and Technology
1 answer:
Phantasy [73]2 years ago
5 0
<h3>What is Network forensics ?</h3>

Network forensics is the procedure of tracking packets and reading community site visitors hobby for intrusion or malware detection. It entails figuring out an issue, amassing and reading data, choosing the great troubleshooting response, and imposing it.

The probability distribution is 1.25.

Read more about the probability distribution:

brainly.com/question/24756209

#SPJ1

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Write a Java program to encrypt and decrypt a phrase using two similar approaches, each insecure by modern standards. The first
xeze [42]

Answer:

See explaination

Explanation:

//CryptoManager.java

public class CryptoManager {

static int LOWER_BOUND=32;

static int UPPER_BOUND=95;

/*This method determines if a string is within the allowable bounds of ASCII

codes according to the LOWER_BOUND and UPPER_BOUND characters. The parameter

plainText is the string to be encrypted. The method returns true if all

characters are within the allowable bounds, false if any character is outside.*/

public static boolean stringInBounds (String plainText)

{

boolean flag=true;

//determines if a string is within the allowable bounds of ASCII

//codes according to the LOWER_BOUND and UPPER_BOUND characters.

for(int i=0;i<plainText.length();i++)

{

if(!((int)plainText.charAt(i)>=LOWER_BOUND && (int)plainText.charAt(i)<=UPPER_BOUND))

{ //false if any character is outside the bounds

flag=false;

break;

}

}

//returns true if all characters are within the allowable bounds

return flag;

}

/*This method encrypts a string according to the Caesar Cipher. The integer key

specifies an offset and each character in plainText is replaced by the character

the specified distance away from it. The parameter plainText is an uppercase

string to be encrypted. The parameter key is an integer that specifies the

offset of each character. The method returns the encrypted string.*/

public static String encryptCaesar(String plainText, int key)

{

//Wrap around the key, if it is greater than the UPPER_BOUND

key=Wrap_around(key);

//encrypted text

String res="";

//encryption

for(int i=0;i<plainText.length();i++)

{

res+=Character.toString((char) ((int)plainText.charAt(i)+key));

}

//return result

return res;

}

/* This method decrypts a string according to the Caesar Cipher. The integer

key specifies an offset and each character in encryptedText is replaced by

the character "offset" characters before it. This is the inverse of the

encryptCaesar method. The parameter encryptedText is the encrypted string

to be decrypted, and key is the integer used to encrypt the original text.

The method returns the original plain text string.*/

public static String decryptCaesar(String encryptedText, int key){

//Wrap around the key, if it is greater than the UPPER_BOUND

key=Wrap_around(key);

//decrypted text

String org="";

//encryption

for(int i=0;i<encryptedText.length();i++)

{

org+=Character.toString((char) ((int)encryptedText.charAt(i)-key));

}

//return result

return org;

}

public static int Wrap_around(int key)

{

while(key>UPPER_BOUND)

{

key-=(UPPER_BOUND-LOWER_BOUND);

}

return key;

}

/* This method encrypts a string according to the Bellaso Cipher. Each character

in plainText is offset according to the ASCII value of the corresponding

character in bellasoStr, which is repeated to correspond to the length of

plaintext. The method returns the encrypted string.*/

public static String encryptBellaso(String plainText, String bellasoStr)

{

//encrypted text

String res="";

//Adjust length of bellasoStr to plainText

while(bellasoStr.length()<plainText.length())

{

bellasoStr+=bellasoStr.substring(0,(plainText.length()-bellasoStr.length()));

}

//encryption

for(int i=0;i<plainText.length();i++)

{

char c=(char)Wrap_around((int)plainText.charAt(i)+(int)bellasoStr.charAt(i) );

res+=Character.toString(c);

}

//return result

return res;

}

/*

This method decrypts a string according to the Bellaso Cipher. Each character

in encryptedText is replaced by the character corresponding to the character in

bellasoStr, which is repeated to correspond to the length of plainText. This is

the inverse of the encryptBellaso method. The parameter encryptedText is the

encrypted string to be decrypted, and bellasoStr is the string used to encrypt

the original text. The method returns the original plain text string.*/

public static String decryptBellaso(String encryptedText, String bellasoStr)

{

//decrypted text

String res="";

//Adjust length of bellasoStr to plainText

while(bellasoStr.length()<encryptedText.length())

{

bellasoStr+=bellasoStr.substring(0,(encryptedText.length()-bellasoStr.length()));

}

//decryption

for(int i=0;i<encryptedText.length();i++)

{

char c=(char)Wrap_around((int)encryptedText.charAt(i)-(int)bellasoStr.charAt(i) );

res+=Character.toString(c);

}

//return result

return res;

}

}

6 0
2 years ago
A point is named by a lowercase letter. <br> a. True<br> b. False
Alik [6]
That is B False m8 that means mate btw xD please say thank you :P
4 0
3 years ago
Read 2 more answers
Find out the names of at least 20 programming languages and their developers.
arlik [135]

Answer:

lala

Explanation:

6 0
2 years ago
Read 2 more answers
HIGH POINTS!!! <br>List the creation date of each gaming console to exist.​
ANEK [815]

Answer:

Explanation:

The original Xbox: November 15, 2001

The original PS1: December 1, 1994

Xbox 360: November 22, 2005

Ps2: March 4, 2000

Ps3: November 11, 2006

Xbox One: November 22, 2013

Ps4: November 15, 2013

Nintendo Ds: November 21, 2004

Nintendo 3ds: February 26, 2011

Gameboy: April 21, 1989

Nintendo Switch: March 3, 2017

7 0
3 years ago
When one makes a social media post, what happens on other devices with the same app?
victus00 [196]

Answer:

An alert appears on the other devices

Explanation:

On social media platforms, whenever some one make a post, all the person who are using that social media app and present in the friend circle of that particular person receive an alert containing the information of the post.

The alert that received by different users on a social media platform is known as Notification. This notification is a type of text, in which the activity performed by post creator is mentioned, this text is received with the tone called notification tone.

The purpose of the alert is to informs the friends who are using that social media platform that a post has been published by someone.  

8 0
3 years ago
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