Reliable transmission method for transmitting traction information by block encryption

Abstract

The invention discloses a reliable transmission method for transmitting traction information by block encryption, which comprises the following steps of: at a transmitter, signing a name on traction information m by using a public key cryptosystem, encrypting the traction information m by using a stream cipher S of which the secrete key is k0, splitting the traction information m into two subsequences m1 and m2, grouping according to a block cipher B, performing encryption by using a secrete key 1 and a secrete key 2, and encoding by using a cardinal number-91 conversion method to obtain encoded ciphertext C 1 and ciphertext C 2; encrypting a session key K={k0, k1, k2} by using the identity-based public key cryptosystem and by using a public key at a receiver to obtain the ciphertext C 3 of the session key; transmitting the ciphertext C 1, the ciphertext C 2 and the ciphertext C 3 of the encrypted session key by using three different common channels; and at a receiver, performing reverse operation at the transmitter on the received encoded ciphertext C 1, ciphertext C 2 and the ciphertext C 3 of the session key to obtain the traction information m which is transmitted by the transmitter. The information transmitted by the method has reliability and high security.

Description

technical field [0001] The invention relates to a method for reliably transmitting transaction information. Background technique [0002] In our country, with the more and more extensive application of the Internet, various online activities are becoming more and more frequent. However, information on the Internet is usually transmitted in clear text, which is easy to be snooped and stolen. At present, with the development of online transactions, the implementation of Internet projects in the financial industry and the government, etc., the security of data transmission on the Internet has become an urgent problem to be solved. [0003] The working method of the existing TCP / IP protocol on the Internet makes it impossible to completely prevent the data transmitted in the network from being obtained by others. A large number of solutions are trying to achieve that even if others get the transmitted data, These data are also incomprehensible, ie the transmitted data is encry...

AI Technical Summary

Problems solved by technology

However, the SET system itself is very large and complex, involving a wide range of areas, which is beyond the reach of the IT industry itself, and its implementation costs are relatively high. A transaction requires more than a dozen encryption and decryption operations. Busy servers usually require encryption hardware. Auxiliary

Due to the above reasons, the SET system is difficult to popularize quickly