Secure lock for mobile device

A method comprising:

• initializing, by a telecommunication device, a device access attempt counter to a default value n;
• detecting a device access attempt during a boot sequence of the telecommunication device, wherein each of multiple layers in a boot stack of the boot sequence employs a cryptographic lock that is configured to be unlocked with a first security key;
• initiating a cryptographic validation operation when a second security key is encountered as a part of the device access attempt;
• and
• in response to utilizing the first security key to determine that the second security key is valid during the cryptographic validation operation, enabling access to at least one resource of the telecommunication device;
• or
• in response to utilizing the first security key to determine that the second security key is not valid during the cryptographic validation operation,
• denying access to the at least one resource of the telecommunication device;
• incrementing the device access attempt counter value n to a value i, where i=n+1;
• comparing the incremented device access attempt counter value i to an access attempt threshold value Th;
• determining whether a counter equation i≧Th is satisfied based at least in part on the comparison;
• and
• rebooting the telecommunication device in response to determining that the incremented device access attempt counter value i satisfies the counter equation.

A non-transitory computer storage device with a stored computer-executable program, which, when executed by one or more processors of a telecommunication device, performs operations comprising:

• initializing a device access attempt counter to a default value n;
• detecting a device access attempt during a boot sequence of the telecommunication device, wherein each of multiple layers in a boot stack of the boot sequence employs a cryptographic lock that is configured to be unlocked with a first security key;
• initiating a cryptographic validation operation when a second security key is encountered as a part of the device access attempt;
• in response to utilizing the first security key to determine that the second security key is valid during the cryptographic validation operation, enabling access to at least one resource of the telecommunication device;
• and
• in response to utilizing the first security key to determine that the second security key is not valid during the cryptographic validation operation,
• denying access to the at least one resource of the telecommunication device;
• incrementing the device access attempt counter value n to a value i, where i=n+1;
• comparing the incremented device access attempt counter value i to an access attempt threshold value Th;
• determining whether a counter equation i≧Th is satisfied based at least in part on the comparison;
• and
• rebooting the telecommunication device in response to determining that the incremented device access attempt counter value i satisfies the counter equation.