Cryptoanalysis of RSA system of enciphering with public key

Possible approaches to cryptoanalysis RSA system of enciphering with public key are considered, especially with using of Euler function value. RSA algorithm is used in computer payment system of national bank of Ukraine national payment system, which provides implementation of accounts amongst bank institutions, boards of state treasury on the territory of Ukraine with using of computer facilities of reception, processing, transmitting and protection of information.