Challenge "Weakened Handycipher — Part 1" ¶
By: admin on May 12, 2015, 10:32 p.m.
The challenges for the weakened Handycipher serve as an exercise and use an intentionally weakened version of Handycipher. Part 1 is a partially-known-plaintext challenge with a helping additional information.
Handycipher is a newly designed cipher to permit pen-and-paper encrypting and decrypting, while providing a significantly high level of security.