Introduction - If you have any usage issues, please Google them yourself
The RSA algorithm is the first algorithm that can be used for both encryption and digital signature at the same time. It is also easy to understand and operate. RSA is the most widely researched public key algorithm. It has been nearly twenty years since it was put forward. It has been tested by various kinds of attacks and gradually accepted by people. It is generally considered to be one of the best public key schemes at present. The security of RSA depends on the factor decomposition of large numbers, but it does not theoretically prove that the difficulty of breaking the RSA is equivalent to the difficulty of the large number decomposition.