With the rapid development of information technology, the Internet has become the most important information dissemination tool in the world. While bringing convenience to people, the protection of information security has also become a very concerned issue. RSA, as the most widely studied algorithm in public key cryptosystem, has been tested by various attacks and gradually accepted by people, and is generally regarded as one of the best public key schemes at present. This paper mainly introduces the principle of RSA algorithm, and deeply analyzes the encryption and decryption process of this algorithm. The encryption and decryption operations of RSA algorithm are realized by C language programming, and the specific application of the algorithm is illustrated with examples. Finally, the shortcomings of RSA algorithm are analyzed and some improvement schemes are put forward.

With the rapid development of information technology, the Internet has become the most important means of global information dissemination. While it brings convenience to people, information security has also become a concern of many people. As the most widely studied public key coding system, RSA has withstood various attacks and is gradually accepted by people, and is recognized as one of the best public key strategies. This paper focuses on RSA algorithm, and analyzes the coding process of this algorithm in detail. In this paper, the author completes the encoding and decoding algorithm of RSA algorithm with C language programming, and gives some application examples. Finally, this paper analyzes the shortcomings of RSA algorithm and puts forward corresponding countermeasures.

number theory

Integer factorization of integer factorization

Password (code)

RSA algorithm RAS algorithm