comment on

I am writing a game for a relative to generate cryptograms.

Use List::Util::shuffle for the key generation. It's not bad to map letters in the clear text to the same letter in the cypher text - as long as it's not more often than the statistical average.

Actually the Enigma forbade that, which was one of the reasons why it could be broken during the second world war.

BTW a common scheme for generating a key was to take a word, remove all duplicate characters, and fill the rest of the alphabet from the back:

key: LimbicRegion
removed duplicates: limbcregon
filled with the rest of the alphabet:
    limbcregonzyxwvutsrqpkjhfdcba
[download]

But that's not very secure, and mostly of historical interest ;-)

In reply to Re^4: Random Derangement Of An Array (rotate) by moritz
in thread Random Derangement Of An Array by Limbic~Region

Are you posting in the right place? Check out Where do I post X? to know for sure.
Posts may use any of the Perl Monks Approved HTML tags. Currently these include the following:
<code> <a> <b> <big> <blockquote> <br /> <dd> <dl> <dt> <em> <font> <h1> <h2> <h3> <h4> <h5> <h6> <hr /> <i> <li> <nbsp> <ol> <p> <small> <strike> <strong> <sub> <sup> <table> <td> <th> <tr> <tt> <u> <ul>
Snippets of code should be wrapped in <code> tags not <pre> tags. In fact, <pre> tags should generally be avoided. If they must be used, extreme care should be taken to ensure that their contents do not have long lines (<70 chars), in order to prevent horizontal scrolling (and possible janitor intervention).
Want more info? How to link or How to display code and escape characters are good places to start.


Problems? Is your data what you think it is?
	PerlMonks