Join GitHub today
GitHub is home to over 28 million developers working together to host and review code, manage projects, and build software together.
Sign upThe kappa value is used in a way that's effectively correct, but is a theoretical atrocity #5
Comments
BenH11235
added
the
high-level
label
Dec 24, 2018
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
BenH11235 commentedDec 24, 2018
•
edited
(See reddit comment by /u/hiles)
We want to aim for the decryption to approximate the assumed distribution of the plaintext. What we actually do when choosing the key length is hunting for the largest kappa value, which means that implicitly, we are aiming for the decryption to approximate a degenerate distribution (100% chance of some outcome X) instead.
The result is the same, since while a wrong key length can produce something closer to a degenerate distribution than the plaintext distribution, the probability for this to actually happen with typical problem parameters is less than the probability that I have an aneurysm and die before I manage to hit "submit". But admittedly, that's no excuse.