The Association of Computing Machinery (http://www.acm.org/) on Tuesday named Whitfield Diffie and Martin E. Hellman recipients of 2015 ACM A.M Turing Award, based on their contributions in modern cryptography.

Their inventions of public key cryptography and digital signatures have kept computer secured. The award, Nobel Prize of computing values US $1 million and the finance supported Google.

It's named for Alan M.Turing, the British mathematician who articulated mathematical foundation and computing limit.
Cryptography is a system that converts readable information into gibberish. Only those with a decryption key can read the content.
Not only cryptography but also the mechanisms that underpin electronic commerce recognized two winners.

In 1976, Diffie and Hellman published a paper titled "New Directions in Cryptography" to show public key cryptography was possible. The paper described the future use of computer neworks that sensitive information could be stolen or changed. Forty years later, the forecast came true.

Their contributions are immesurable. Provided the fundamental mathematical principles leverage modern cryptography. While protocols change, theseprinciples are viable over times.

Individuals communicate over secured channels with banks, ecommerce sites, email servers and the cloud. Public key cryptography and digital signatures are the foundation of most security protocols on Internet and protect trillions of dollars in financial transactions.
Cryptography assures confidentiality of information and transmission. It allows us to gain trust in digital information or haven't been accomplished.

Recent attacks show the implications of back doors and flawed implementation to lead compromises. Trusted cryptographic systems should be open for review and open to implementations. Otherwise simple flaws impact security, privacy and safety.
The fundamental properties have not changed but its implementations have in key generation, management, storage and distribution.