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Method and system for activation

  • US 8,607,050 B2
  • Filed: 04/30/2012
  • Issued: 12/10/2013
  • Est. Priority Date: 04/30/2012
  • Status: Active Grant
First Claim
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1. A method for activation comprising:

  • (a) verifying, by a security module card, an activation server using a shared secret key and a first challenge;

    (b) mediating, by the security module card, in response to verifying the activation server, a verification of the activation server by a mobile device, wherein the verification uses a second challenge and a key pair;

    (c) encrypting, by the security module card, the second challenge using a generated key to obtain an encrypted second challenge, wherein the generated key is generated by the activation server;

    (d) transmitting, by the security module card, the encrypted second challenge and a third challenge to the mobile device, wherein the mobile device verifies the security module card using the encrypted second challenge;

    (e) receiving, by the security module card, an encrypted third challenge from the mobile device;

    (f) decrypting, by the security module card, the encrypted third challenge to obtain a received third challenge;

    (g) verifying, by the security module card, the mobile device based on the received third challenge being equal to the third challenge sent to the mobile device; and

    (h) sending, by the security module card, a validation of mutual trust between the security module card and the mobile device to the activation server,wherein (a) is performed before (c) and wherein (c) is performed before (h).

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