Method used in key consultation of USB KEY audio ciphering and deciphering device

Abstract

The invention discloses a method used for the key agreement of a USB KEY audio encryption / decryption device, which comprises the following two courses: one course is that the USB KEY audio encryption / decryption device carries out encryption processing on a collected audio signal according to set state, and the other is that the USB KEY audio encryption / decryption device carries out decryption processing on a received digital audio signal according to the type of the digital audio signal data. Through a key agreement carried out in the USB KEY audio encryption / decryption device between a sender and a receiver, the method of the invention realizes dynamic change of the encryption / decryption key and the encryption / decryption algorithm, then overcomes the defect that the encryption / decryptionkey and algorithm of the USB KEY audio encryption / decryption device in the prior art is single and fixed, improves the safety and reliability of the audio communication and transmission, strengthens the anti-destroy ability of the encrypted audio data and ensures the encryption intensity of the audio data which is impossibly stolen in a computer or a communication link.

Description

technical field [0001] The invention belongs to the field of key negotiation of USBKEY audio encryption and decryption devices, in particular, it is used for USBKEY audio encryption by dynamically changing the encryption and decryption keys and algorithms in the USBKEY audio encryption and decryption device, thereby improving the security and reliability of audio communication transmission. The method for decrypting the device key agreement. Background technique [0002] With the rapid development of computer technology, information network has become an important guarantee for social development. Nowadays, there are more and more network communication applications, and various chat software (such as QQ, MSN, Skype, etc.) are more and more widely used. With the increase of network bandwidth and the deepening of network applications, network audio signal communication has become the most Potential network application field. Network audio signal communication can convert aud...

AI Technical Summary

Problems solved by technology

[0003] However, while the general public and enterprises enjoy the convenience brought by network communication, its security issues have gradually surfaced

Like other applications in the network, the security risks in network audio signal communication are worrisome. Network audio signal communication has become the target of network attackers. In addition, the generation of bad network software has led to network calls being monitored, or using Bad programs such as Trojan horse programs intercept data information, etc., frequently causing security crises in network calls

Network private information and corporate confidential information are leaked or monitored, which brings immeasurable losses to individuals and enterprises

Therefore, in the actual application of network communication, serious consequences and adverse effects may be caused by information leakage and leakage at any time.

[0004] With the increasing requirement for the security of audio communication, some instant chat software itself also has some encryption functions, but as public software for communication on the network, it becomes quite easy to crack the encryption, so its Safety cannot be guaranteed

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