b. Assume that you know ciphertext and part of the plaintext.

Example: Ciphertext: ZWSENIUSPLJVEULNVPVJPWBeginning of the Plaintext: howareyou....

Given that the block size is 2, so the size of the key-matrix is 2X2 Find a key-matrix and decipher the message. (hint: Hill Cipher algorithm was used to encrypt)