Lab 2 (09/03/2023)

Problems for lab session:

Practicals

Part-1:

1. Design an Electronic Codebook (ECB) with the following properties:

   • IV & Key type: string
   • Size of Key: 128-bits
   • Key: Must contain Roll Number

2. Design a Cipher Block Chaining (CBC) with the following properties:

   • IV & Key type: string
   • Size of Key: 128-bits
   • Key: Your Roll Number

Part-2:

1. Implement the Vernam Cipher for:

   • Upper & Lower case alphabets
   • Numbers (0-9)
   • There must be two separate programs for the above 2 cases, each having an encryption and a decryption function

* It should be a variant of Vernam Cipher, i.e., a Vigenère Cipher with a fixed key length.

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