From DES to 3-DES

Step 1 : Generate Plaintext m, keyA and keyB by clicking on rexpective buttons PART I of the simulation page.

Step 2 : Enter generated Plaintext m from PART I to PART II in "Your text to be encrypted/decrypted:" block.

Step 3 : Enter generated keyA from PART I to PART II "Key to be used:" block and click on DES encrpt button to output ciphertext c1.This is First Encryption.

Step 4 : Enter generated ciphertext c1 from PART II "Output:" Block to PART II in "Your text to be encrypted/decrypted:" block.

Step 5 : Enter generated keyB from PART I to PART II in "Key to be used:" block and click on DES decrypt button to output ciphertect c2.This is Second Encryption.

Step 6 : Enter generated ciphertext c2** from PART II "Output:" block to PART II in "Your text to be encrypted/decrypted:" block.

Step 7 : Enter generated keyA from PART I to PART II "Key to be used:" block and click on DES encrpt button to output ciphertext c3.This is Third Encryption. As Encryption is done thrice.This Scheme is called triple DES.

Step 7 : Enter generated ciphertext c3 from PART II "Output:" Block to PART III "Enter your answer here:" block inorder to verify your Triple DES.