Challenge "Double Column Transposition Reloaded — Part 1" ¶
By: admin on Dec. 11, 2013, 8:09 p.m.
The double columnar transposition is considered to be one of the best manual encryption systems. This sequence considers vulnerabilities that have been used to solve the corresponding level X challenge. The three challenges of the sequence have an increasing difficulty. In the first part an English plaintext has been encrypted with keys derived from English sentences.