Method for establishing secure communication channel between mobile handheld devices based on two-dimension code

Method for establishing secure communication channel between mobile handheld devices based on two-dimension code

  • CN 105,554,028 A
  • Filed: 01/22/2016
  • Published: 05/04/2016
  • Est. Priority Date: 01/22/2016
  • Status: Active Application
First Claim
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1. based on Quick Response Code mobile hand-held device between a secured communication channel method for building up, it is characterized in that carrying out as follows:

  • Step 1, suppose to need between device A and equipment B to set up secured communication channel, then device A produces the common parameter needed for cipher key agreement process;

    Described common parameter comprises this primitive root g of a Big prime q and described Big prime q;

    Step 2, described device A utilize pseudo-random generator to produce the private key with stochastic behaviour, then calculate the PKI corresponding with the private key of described device A according to described common parameter;

    Step 3, described device A generate Quick Response Code according to described common parameter and described device A PKI, and show;

    Step 4, described equipment B scan the Quick Response Code shown by described device A and change, and obtain the PKI of common parameter that described device A provides and described device A;

    Step 5, described equipment B adopt pseudo-random generator to produce to have the private key of stochastic behaviour, then calculate the corresponding PKI of the private key of described equipment B according to described common parameter;

    Step 6, described equipment B generate Quick Response Code according to the PKI of described equipment B, and show;

    Step 7, described device A scan the Quick Response Code shown by described equipment B and change, and obtain the PKI of described equipment B;

    Step 8, described device A and described equipment B calculate identical session key according to the private key of oneself and the PKI of the other side respectively;

    Thus complete cipher key agreement process;

    Step 9, to derive from according to described session key and obtain securely communicating required encryption key and Integrity Key between described device A and described equipment B, thus set up secured communication channel.

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