Data Safe Transmission Mechanism Based on Integrated Encryption Algorithm

For implementing the data safe transmission in Internet, a safe transmission mechanism which base on RSA and triple DES algorithm is put forward. The mechanism makes full use of advantage of DES and RSA. Because encryption speed of triple DES algorithm is faster than RSA algorithm for long plaintext, and RSA algorithm distribute key safely and easily. Date encryption security of triple DES algorithm is far higher than DES algorithm. Digital abstract algorithm MD5 is adopted in this mechanism. Through comparing the digital signature which is transmitted by dispatcher and digital signature result of plaintext which is got by receiver through MD5 algorithm, data security can be guaranteed. This mechanism realizes the confidentiality, completeness, authentication and nonrepudiation. It is an effective method to resolve the problem of safe transmission in Internet.