# 6.7 Computer Problems

The following is the ciphertext of a Hill cipher

`zirkzwopjjoptfapuhfhadrq`

using the matrix

$$\left(\begin{array}{cccc}1& 2& 3& 4\\ 4& 3& 2& 1\\ 11& 2& 4& 6\\ 2& 9& 6& 4\end{array}\right)\text{.}$$Decrypt.

The following is the ciphertext of a Hill cipher

`zirkzwopjjoptfapuhfhadrq`

using the matrix

$$\left(\begin{array}{cccc}1& 2& 3& 4\\ 4& 3& 2& 1\\ 11& 2& 4& 6\\ 2& 9& 6& 4\end{array}\right)\text{.}$$Decrypt.

Previous Post
Appendix – The Ruby Workshop