The example source code has been provided by the task. What I need to do is that I need tocalculate the private key d by using the BIGNUM APIs and (e,n) as the public key and (d, n) as the privatekey. By filling out the lines of the given code, I can solve the task..

Task 1: Generating Two Different Files with the Same MD5 Hash Q1. If the length of your prefix file is not multiple of 64, what is going to happen?A1. Multiple zero-paddings are being added. Q2. Create a prefix file with exactly 64 bytes, and run the collision tool again, and seewhat happens.A2. No paddings are.

Task 2: Encryption using Different Ciphers and Modes. Q1. You should try at least 3 different ciphers with ‘openssl enc’ command.A1. Typing invalid openssl commands will give valid lists of commands. Example commands given for encrypting/decrypting in the original material are as follows: By following the commands that were given, it can solve task two.