Cryptography

Cryptography

  1:14 PM    mayuravaani

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Crypto System Cryptographic system are characterized along 3 independent dimensions The type of operation transforming plain text to cipher text The number of keys used The way in which plain text is processed. Substitution techniques Caesar Cipher Monoalphabatic Cipher Playfair Cipher Hill Cipher Polyalphabatic Cipher Transposition techniques Rail fence Cipher Columnar transp...

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Cryptography : Caesar Cipher

Cryptography : Caesar Cipher

  1:12 PM    mayuravaani

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Caesar Cipher Sample java code for Caesar Cipher key : each letter shift of two in alphabet order caesar cipher encryption eg: hello -----------jgnnq encryption import java.util.*; public class encryption{ public static void main(String args[]){ Scanner...

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Cryptography : Vigenere Cipher

Cryptography : Vigenere Cipher

  1:06 PM    mayuravaani

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Vigenere Cipher Sample java code for Vigenere Cipher Encryption //Vigenere cipher encryption import java.util.*; public class vigenere_encry{ public static void main(String args[]){ Scanner myscanner=new Scanner(System.in); String alpha="abcdefghijklmnopqrstuvwxyz"; ...

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Cryptography : Playfair Cipher

Cryptography : Playfair Cipher

  1:03 PM    mayuravaani

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Playfair Cipher Sample java code for Playfair Cipher Encryption //playfair encryption: i and j count as one letter import java.util.*; public class playfair_encry{ public static void main(String args[]){ Scanner myscanner=new Scanner(System.in); System.out.println("Enter the keyword"); String key=myscanner.nextLine().toLowerCase().replace(" ","").replace("j","i"); ...

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Cryptography : Railfence Cipher

Cryptography : Railfence Cipher

  1:00 PM    mayuravaani

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Railfence Cipher Sample java code for Railfence Cipher Key = 2 Encryption //key=2 import java.util.Scanner; public class Railfence_encry{     public static void main(String args[]){         Scanner myscanner =new Scanner(System.in);         System.out.println("Enter the plaintext");         String word=myscanner.nextLine().replace("...

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Cryptography : Railfence Cipher

Cryptography : Railfence Cipher

  12:54 PM    mayuravaani

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Railfence Cipher Sample java code for Railfence Cipher Key = 3 Encryption //key=3 import java.util.*; public class Railfence1_encry{     public static void main(String args[]){         Scanner myscanner =new Scanner(System.in);  ...

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