Challenge "Extended Handycipher — Part 2" ¶
By: admin on March 27, 2015, 3:27 p.m.
Extended Handycipher is an enhancement of the newly designed cipher Handycipher, which permits pen-and-paper encrypting and decrypting, while providing a significantly high level of security. From the 905-character plaintext 229 characters somewhere in it are known.
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