Encryption and decryption using RSA in java


RSA is a cryptosystem, which is known as one of the first practicable public-key cryptosystems and is widely used for secure data transmission. In such a cryptosystem, the encryption key is public and differs from the decryption key which is kept secret. In RSA, this asymmetry is based on the practical difficulty of factoring the product of two large prime numbers, the factoring problem. RSA stands for Ron Rivest, Adi Shamir and Leonard Adleman, who first publicly described the algorithm in 1977.

For more information please refer to wiki
Here I am going to give an example for encryption and decryption mechanism in java using RSA algorithm.

First create the RSAConstants java class which will be used for holding the various constants used in this coding.


Now create the RSA KeyPair generator class which will be further used for encryption and decryption.


Now create the logic for encryption and decryption


Now for testing purpose create a main class and test the above logic.


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