Introduction

We have come through a long way in learning ciphers. Both DES and AES can work well with a fix-sized block, but either of them could handle with plaintext or ciphertext with variant size.😭 Furtunately, operation modes of block cipher offer us a feasible to resolve this embarrassed problem. Can't wait to unmask this mysterious method😉

• Contents
  • Operation Mode of Block Cipher
  • Cipher Block Chaining Mode
  • Cipher FeedBack Mode
  • Output FeedBack Mode
  • Counter Mode