Using network authentication to counter subscriber identity module card man-in-the-middle subsidy lock attack
AssigneeMotorola Mobility LLC
InventorsKent Rager, Joel Voss
Life of this patent
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Abstract
A method, telecommunication apparatus, and electronic device for securely using a subscriber identity module are disclosed. A secure memory 308 may store a secure international mobile subscriber identity. A subscriber identity module interface 312 may receive an unlocking international mobile subscriber identity. A processor 304 may erase a cache temporary mobile subscriber identity if the unlocking international mobile subscriber identity does not match the secure international mobile subscriber identity.
Claims13
A method for securely using a subscriber identity module, comprising:
- storing a secure international mobile subscriber identity in a secure memory;
- receiving an unlocking international mobile subscriber identity from a subscriber identity module;
- and
- erasing a cache temporary mobile subscriber identity if the unlocking international mobile subscriber identity does not match the secure international mobile subscriber identity,
- wherein the method further comprises:
- storing a secure temporary mobile subscriber identity;
- and
- comparing an unlocking temporary mobile subscriber identity with the secure temporary mobile subscriber identity.
A telecommunications apparatus for securely using a subscriber identity module, comprising:
- a secure memory that stores a secure international mobile subscriber identity;
- a subscriber identity module interface that receives an unlocking international mobile subscriber identity;
- and
- a processor that erases a cache temporary mobile subscriber identity if the unlocking international mobile subscriber identity does not match the secure international mobile subscriber identity,
- wherein the secure memory stores a secure temporary mobile subscriber identity and the processor compares an unlocking temporary mobile subscriber identity with the secure temporary mobile subscriber identity.
Dependencies are inferred from the claim text.