Key factor generation method of root key

Abstract

The invention relates to a key factor generation method of a root key. Key factors are generated one by one by a key factor generation device and are input into an encryption machine, the key factor generation device comprises an opaque rectangular box, a first axle and a second axle are arranged in the rectangular box side by side, a paper tape coil printed with continuous characters is installedon the first axle, a starting end of the paper tape coil is wound on the second axle, a first button and a second button, and a first hole and a second hole aligned to the upper side of the first axle are arranged on a top face of the rectangular box, the first hole just exposes one character on the paper tape coil, and the second hole exposes a blank part between the character aligned to the first hole and the next character. Compared with the prior art, the method provided by the invention has the advantages that the sufficient randomness of the key factors of the root key is determined bymultiple randomness, it can be ensures that the root key and all keys are established without anyone knowing the factor values, and meanwhile a mechanism is provided to guarantee that the root key canbe rebuilt when a disaster occurs.

Description

technical field [0001] The invention relates to the technical field of information security encryption, in particular to a method for generating key factors of a root key. Background technique [0002] In recent years, the application of smart cards has become more and more extensive, and with the continuous improvement of semiconductor technology, the chip can be packaged smaller and thinner, and the cost is also continuously reduced. Therefore, electronic tags have been widely used, such as in commodity To prevent counterfeit and shoddy products in the circulation link, there is a system that uses electronic tags for commodity traceability. For the equipment asset management of large enterprises with multiple management levels or national enterprises with many subsidiaries, how to carry out equipment operation and maintenance management business efficiently and safely is very important. For example, the operation and maintenance personnel of the parent company have the au...

AI Technical Summary

Problems solved by technology

[0006] On the other hand, when the leader changes, because the existing system works well and the cards are issued to users, it is often impossible to rebuild the key system. However, since the outgoing leader knows the root key factor, it will appear more Not safe, although the old leader handed over the password letter to the new leader, this factor is still known to the old leader, which is very dangerous

[0007] 2. The hidden danger of key transmission

[0008] Usually, the operation and maintenance personnel of the parent company have the authority to read and write the equipment electronic tags of the parent company and all subsidiaries, while the operation and maintenance personnel of the subsidiary company can only read and write the equipment electronic labels of their own company

Images