A smart door lock opening method based on sound wave technology

Abstract

The invention discloses an encryption method of a key. The method comprises the following steps: acquiring an ''authorization key'' KEY1; judging the timeliness of the ''authorization key'' KEY1 according to a time stamp of the KEY1; if the ''authorization key'' KEY1 is invalid, reacquiring the KEY1, and if the reacquisition number of times reaches a maximum number of times, ending the encryption;and if the ''authorization key'' KEY1 is valid, generating a random number KEY2; assembling the KEY1 and the KEY2 to form a key KEY3; encrypting the KEY3 by using an encryption algorithm, and generating a ciphertext of an unlocking key; intercepting a part of the ciphertext of the unlocking key according to a set rule, and forming a ciphertext fragment; encoding the ciphertext fragment, equipmentinformation and the time stamp of the KEY1; and obtaining the ciphertext. Meanwhile, the invention further discloses an acoustic technology-based intelligent door lock opening method, in which the ciphertext is generated by adopting the above encryption method of the key. The unlocking security is improved, the property security of a user is protected, and promotion and use of an intelligent household are pushed.

Description

technical field [0001] The invention relates to the field of intelligent security, in particular to a method for opening an intelligent door lock based on sound wave technology. Background technique [0002] The digital door lock is a door lock characterized by digital authentication, which is different from the traditional door lock characterized by mechanical keys. Including credit card, password, fingerprint, face, iris, voiceprint, vein and so on. As a high-end product of digital door locks, smart door locks are combined with the current mobile Internet, and can realize functions such as remote opening, remote setting, and remote monitoring using smart terminals such as mobile phones. At present, there are many products on the market, which undoubtedly increase the convenience of use, but also bring some risks in safety. Although encrypted transmission is generally carried out in the protection of key identity information, there are still some problems as follows: [...

AI Technical Summary

Problems solved by technology

[0003] 1. Most of the encryption algorithms are reversible algorithms, which may be theoretically reversed;

[0004] 2. The encrypted ciphertext is basically completely transmitted, and there is a possibility of being cracked after being intercepted by criminals;

[0005] 3. There is a lack of effective means to prevent replay attacks. Criminals can perform sound wave unlocking by secretly recording the sound wave information sent by the mobile phone and playing it back.

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