racket 5/4 --- asymmetry
Channel: Danny Heap
Date: 2012-04-26

Encrypt a giraffe image using the RSA algorithm, an example of public-key encryption.  Convert colours into enormous numbers, and then manipulate them.  Arithmetic is carried out with exact integers and rational numbers.  See also

www.cdf.toronto.edu/~heap/Racket/encryption.html
www.cdf.toronto.edu/~heap/racket_lectures.html