In the official U.S. Government SIC Code system, there are a total of 1,514 codes (included in the 2-digit, 3-digit, and 4-digit levels). A very important part of the SIC Code system is that the U.S. Government had written into the SIC Code Manual that agencies could use additional subdivisions within specific four-digit industries to further break down industries.
1. Rivest-Shamir-Adleman (RSA) algorithm : RSA stands for Rivest-Shamir-Adleman. It is a cryptosystem used for secure data transmission. In RSA algorithm, encryption key is public but decryption key is private. This algorithm is based on mathematical fact that factoring the product of two large prime numbers is not easy. It …