1. A team at the Department of Electrical Communication Engineering, Indian Institute of Science has developed a true random number generator. P. The team said that this generator could improve data encryption. Q. But the key needs to be unpredictable and, therefore, randomly generated to resist hacking. R. Encrypted information can be decoded only by authorised users who have access to a cryptographic ‘key’. S. Also, they claimed that it could provide improved security for sensitive digital data such as credit card details, passwords, and other personal information. 6. Cryptographic keys are typically generated in computers using pseudorandom number generators, which rely on mathematical formulae or pre-programmed tables to produce numbers that appear random but are not.