Method of controlling an electronic device and corresponding electronic device

1. A controlling method performed by an electronic device, said method comprising:

storing, in a first ROM-type memory of the electronic device, a plurality of security check instructions configured to cause performance of one or more security checks of the electronic device, the plurality of security check instructions being in a deactivated state and enabling personalization of the electronic device;

receiving an instruction command including identifiers identifying two or more security check instructions of the plurality of security check instructions;

concatenating the received identifiers to create a code defining a set of instructions, wherein said set of instructions comprises the two or more security check instructions; and

storing the code in a second memory of the electronic device accessed by a program executed by the electronic device, wherein the program performs a check of a transaction by executing the set of instructions defined by the code.

2. The method according to claim 1 , wherein the instruction command is a script command received during a Europay Mastercard Visa (EMV) transaction.

3. The method according to claim 1 , wherein executing the set of instructions is performed in response to a GENERATE AC command previously received from an external terminal in compliance with the EMV protocol.

4. The method according to claim 1 , wherein executing the set of instructions comprises:

determining a first result delivered by performing the check; and

executing at least one security check instruction defined in said set of instructions, the at least one security check instruction being a function of the first result of the check.

5. The method according to claim 4 , wherein said at least one security instruction comprises at least one of the following:

sending a notification including data representative of the first result of the check;

storing history data in the memory of the electronic device, the history data being representative of the first result of the check; or

generating a security decision specifying how the transaction is to be processed.

6. The method according to claim 4 , wherein the set of instructions comprise:

at least two first prerecorded security check instructions for executing a plurality of security check operations as the check;

at least one second prerecorded security check instruction comprising a link operator defining a combining logic link between said plurality of security check instructions; and

at least one third prerecorded security check instruction for executing a security operation as a function of the result of said plurality of security check instructions in compliance with said combining logic link.

7. The method according to claim 6 , wherein the first result of the check is a boolean.

8. The method according to claim 6 , wherein the link operator comprises at least one of the following:

an “AND” operator;

an “OR” operator;

an equality operator;

an inequality operator; or

a comparison operator.

9. The method according to claim 4 , comprising:

performing a preliminary security check before the check, the preliminary security check delivering a preliminary result;

determining a final result on the basis of the preliminary result from the preliminary security check and of the first result from the check; and

processing the transaction in accordance with the final result.

10. The method according to claim 9 , wherein the preliminary result corresponds to a first degree of security and the final result corresponds to a second degree of security, said second degree of security being at least as high as the first degree of security.

11. The controlling method of claim 1 , wherein the code is of a BER-TLV structure according to EMV standard.

12. The controlling method of claim 1 , wherein the executing the set of instructions comprises interpreting the code stored in the second memory and accessing the prerecorded security check instructions in the first ROM-type memory.

13. A non-transitory computer-readable data medium that includes instructions that, when executed by a processor of an electronic device, perform a method comprising:

storing, in a first ROM-type memory of the electronic device, a plurality of security check instructions configured to cause performance of one or more security checks of the electronic device, the plurality of security check instructions being in a deactivated state and enabling personalization of the electronic device;

receiving an instruction command including identifiers identifying two or more security check instructions of the plurality of security check instructions;

concatenating the identifiers to create a code defining a set of instructions, wherein said set of instructions comprises the two or more security check instructions;

storing the code in a second memory of the electronic device accessed by a program executed by the electronic device, wherein the program checks a transaction by executing the set of instructions defined by the code.

14. An electronic device comprising:

a processor;

a first ROM-type memory;

a second memory;

a non-transitory computer-readable medium storing instructions that when executed by the processor cause the processor to perform operations comprising:

storing, in a first ROM-type memory of the electronic device, a plurality of security check instructions configured to cause performance of one or more security checks of the electronic device, the plurality of security check instructions being in a deactivated state and enabling personalization of the electronic device;

receiving an instruction command including identifiers identifying two or more of the security check instructions;

concatenating the received identifiers to create a code defining a set of instructions, wherein said set of instructions comprises the two or more security check instructions; and

storing the code in a second memory of the electronic device accessed by a program executed by the electronic device, wherein the program checks a transaction by executing the set of instructions defined by the code.