Cryptography is the art of encrypting and decrypting data. Encryption is the process of encoding unencrypted data, or plaintext, into encrypted data, or ciphertext, to disguise the data and make it ...

RC4 is a symmetric cryptosystem, invented in 1987 by MIT cryptographer Ronald Rivest, who went on to found RSA Security. The algorithm has several known flaws, but it is still widely used. RC4 is also ...

An encryption method that uses the same private (secret) key at both ends of the transmission. Contrast with asymmetric cryptography, which uses a public and private key. See secret key cryptography.

Recently, Professor Guilu Long, Dr. Zeguo Wang, Dr. Shijie Wei from Tsinghua University and Beijing Academy of Quantum Information Sciences, and Professor Lajos Hanzo from the University of ...

Understand the crypto concepts behind the modern internet security infrastructure, from digital signatures and transport layer security to blockchains and Bitcoin. Cryptography grows ever more ...

For centuries, secure communication required a shared secret, until a radical idea emerged: what if the lock and the key never had to meet? This is the story of how splitting encryption into two ...

No one knows when, but crypto-menacing quantum machines are coming. Here's how researchers use quantum mechanics to crack large integers in asymmetric cryptography. Quantum computing continues to ...

The debate around encryption has become a hot topic in a world where communications are increasingly becoming digital. The modern encryption debate is a complex and nuanced issue, with many players ...

The Internet is one of the most important inventions in human history. It has changed our lives for the better, and it’s now an integral part of our society. We can’t go back to a world without it.