Follow moneycontrol. Copyright Â© e-Eighteen.com Ltd. All rights reserved. Reproduction of news articles, photos, videos or any other content in whole or in part in any form or medium without express written permission of moneycontrol.com is prohibited.
THE CRYPTOGRAPHY GUIDE: RSA. RSA RSA is a public key algorithm invented by Rivest, Shamir and Adleman. The key used for encryption is different from (but related to) the key used for decryption.The algorithm is based on modular exponentiation.hen talking of key lengths in connection with RSA, what is meant is the modulus length. An algorithm that uses different keys for encryption and decryption is said to be asymmetric. Anybody knowing the public key can use it to create encrypted messages, but only the owner of the secret key can decrypt them.
The RSA system is the most commonly used encryption and authentication algorithm, and is included as a part of Cisco IOS. To use the RSA system, a network host generates a pair of keys. One is called the public key, and the other is called the private key. The Public key is given to anyone who wants to send encrypted data to the host. The Private key is never shared.