Rsa Public Key Essay Example for Free

Rsa Public Key EssayAsymmetric algorithmic programs rely on one fundamental for encryption and a different but colligate key for decryption. These algorithms have the following important characteristics It is computationally infeasible to determine the decryption key given only knowledge of the cryptographic algorithm and the encryption key.In addition, some algorithms, such as RSA, also exhibit the following characteristics Either of the two related keys can be utilize for encryption, with the other utilize for decryption. A public key encryption scheme has six ingredients Plaintext This is readable message or data that is fed into the algorithm as input. Encryption algorithm The encryption algorithm performs various transformations on the plaintext. Public and private key This is a pair of keys that have been selected so that if one is used for encryption, the other is used for decryption.The exact transformations performed by the algorithm depend on the public or pri vate key that is provided as input. Cipher text This is the scrambled message produced as output. It depends on the plaintext and the key. For a given message, two different keys will produce two different cipher texts. Decryption algorithm This algorithm accepts the ciphertext and the matching key and produces the original plaintext.The essential steps are as the following . from each one user generates a pair of keys to be used for the encryption and decryption of messages. 2. Each user places one of the two keys in a public register or the other accessible file. This is the public key. The companion key is kept private. As figure suggests, each user maintains a collection of public keys obtained from others. 3. If Bob wishes to send a confidential message to Alice, Bob encrypts the message using Alices public key.