Researchers from MIT and the Northern University of Ireland stand by their theory that information theory is the wrong foundation for cryptography and security. In an article released by MIT, the scientists said that in information theory, information is tied to entropy, which is a measure of uncertainty in a random variable and usually refers to Shannon entropy, developed by MIT professor Claude Shannon. The article said that a computer cut loose to guess correlations between encrypted and unencrypted versions of a file would learn the answer much quicker than expected.
Source: https://threatpost.com/cracking-crypto-just-got-a-little-easier/102010/