Device and method for transmitting and receiving WI-FI parameter
View Patent ↗A WI-FI parameter transmitting device can transmit a WI-FI parameter in the form of a broadcast signal, and includes an encryption module, a configuration module, a modulation module, and a play module. The encryption module obtains and encrypts the WI-FI parameter and the configuration module configures an encrypted WI-FI parameter and authorization information to generate WI-FI configuration information. The modulation module modulates the WI-FI configuration information with a carrier signal to generate a PCM signal and the play module plays the PCM signal in at least one predetermined frequency. A WI-FI parameter transmitting method and a WI-FI parameter receiving device and method are further provided.
1. A WI-FI parameter receiving method comprising:
receiving a broadcast signal and converting the broadcast signal to a PCM signal;
determining whether the PCM signal comprises WI-FI configuration information;
extracting the WI-FI configuration information from the PCM signal in response to the PCM signal comprising the WI-FI configuration information;
determining whether the WI-FI configuration information is authorized;
decrypting the WI-FI configuration information to obtain a WI-FI parameter in response to the WI-FI configuration information being authorized;
wherein extracting the WI-FI configuration information from the PCM signal comprises:
reading a predetermined byte of the PCM signal;
calculating a sum of the predetermined byte of the PCM signal;
determining whether the sum is greater than a reference value;
writing a first data into the WI-FI configuration information in response to the sum being greater than the reference value; and;
writing a second data into the WI-FI configuration information in response to the sum being less than the reference value.
2. The WI-FI parameter receiving method of claim 1 , wherein receiving a broadcast signal and converting the broadcast signal to a PCM signal comprises:
receiving a broadcast signal in a first frequency and a second frequency; and
selecting a better broadcast frequency, the better broadcast frequency comprising the frequency having less noise between the first frequency and the second frequency; and
converting the broadcast signal of the better broadcast frequency to a PCM signal.
3. The WI-FI parameter receiving method of claim 1 , wherein determining whether the WI-FI configuration information is authorized comprises:
extracting authorization information from the WI-FI configuration information; and
verifying the authorization information to determining whether the WI-FI configuration information is authorized.
4. The WI-FI parameter receiving method of claim 1 , wherein decrypting the WI-FI configuration information to obtain a WI-FI parameter in response to the WI-FI configuration information being authorized comprises:
extracting a hash value from the WI-FI configuration information in response to the WI-FI configuration information being authorized;
comparing the hash value with a recalculated hash value; and
decrypting the WI-FI configuration information to obtain a WI-FI parameter in response to the hash value being equal to the recalculated hash value.
5. The WI-FI parameter receiving method of claim 4 , wherein decrypting the WI-FI configuration information to obtain a WI-FI parameter in response to the hash value being equal to the predetermined hash value comprises:
decrypting the WI-FI configuration information through a symmetric algorithm to obtain a WI-FI parameter in response to the hash value being equal to the recalculated hash value.
6. A WI-FI parameter receiving device comprising:
a receiver, configured to receive a broadcast signal; and
a processor comprising:
a conversion module, configured to convert the broadcast signal to a PCM signal;
an extraction module, configured to determine whether the PCM signal comprises WI-FI configuration information, and extract the WI-FI configuration information from the PCM signal in response to the PCM signal comprising the WI-FI configuration information, wherein the extraction module is further configured to read a predetermined byte of the PCM signal every time and calculate a sum of the predetermined byte, write a first data into the WI-FI configuration information in response to the sum being greater than a reference value and write a second data into the WI-FI configuration information in response to the sum being less than the reference value;
a determination module, configured to determine whether the WI-FI configuration information is authorized; and
a decryption module, configured to decrypt the WI-FI configuration information to obtain a WI-FI parameter in response to the WI-FI configuration information being authorized.
7. The WI-FI parameter receiving device of claim 6 , wherein the receiver further respectively receives the broadcast signal in a first frequency and a second frequency; the conversion module is configured to select a better broadcast frequency and convert the broadcast signal of the better broadcast frequency to the PCM signal; and the better broadcast frequency comprises the frequency having less noise between the first frequency and the second frequency.
8. The WI-FI parameter receiving device of claim 6 , wherein the determination module is further configured to extract authorization information from the WI-FI configuration information and verify the authorization information to determining whether the WI-FI configuration information is authorized.
9. The WI-FI parameter receiving device of claim 6 , wherein the decryption module is further configured to extract a hash value from the WI-FI configuration information in response to the WI-FI configuration information being authorized, compare the hash value with a recalculated hash value, and decrypt the WI-FI configuration information to obtain the WI-FI parameter in response to the hash value being equal to the recalculated hash value.
10. The WI-FI parameter receiving device of claim 9 , wherein the decryption module is further configured to decrypt the WI-FI configuration information through a symmetric algorithm.