Electronic circuit and method for monitoring data processing
A data processing and electronic circuit technology, applied in the direction of electrical digital data processing, electrical components, digital transmission systems, etc., can solve problems such as endangering the password system
Active Publication Date: 2018-02-16
INFINEON TECH AG
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Problems solved by technology
Guarding against such calculation errors is often important for security-related electronic circuits (such as processing circuits on chip cards), because in some cryptographic methods a single erroneous result may be sufficient to extract data stored securely in hardware under normal operation. secret key and thus compromise the entire cryptographic system
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[0010] The following detailed description refers to the accompanying drawings that show, by way of example, specific details and aspects of the disclosure in which the invention may be practiced. Other aspects may be utilized and structural, logical, and electrical changes may be made without departing from the scope of the present invention. The various aspects of this disclosure are not necessarily mutually exclusive, as some aspects of this disclosure can be combined with one or more other aspects of this disclosure to form new aspects.
[0011] Protection measures in hardware and software for protection against attacks during the execution of a computer program usually have the intervening of inserting and testing redundancy in the computer program or stored data processed by the computer program or verifying the computer program during execution of the computer program The resulting loop invariants preserve such common characteristics.
[0012] The consistency of the sto...
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Embodiments of the invention generally relate to electronic circuits and methods for monitoring data processing. In particular, according to one embodiment, an electronic circuit is described comprising: a processing circuit configured to perform data processing comprising a plurality of consecutive operations, wherein predetermined input values are processed in at least some of the plurality of operations a check value memory; a controller configured to, for each operation of data processing performed by the processing circuit, check whether a predetermined input value is processed in the operation, and if the predetermined input value is processed in the operation, combine Predetermining the input value and the content of the check value memory; and a detector configured to check whether the content of the check value memory is equal to the predetermined value when the processing is completed.
Description
technical field [0001] The present disclosure relates to electronic circuits and methods for monitoring data processing. Background technique [0002] A bug attack is a form of side-channel attack in which an attacker attempts to disrupt the hardware performing data processing (such as executing a certain software program or an application) by means of external influences to change the normal processing flow and cause erroneous behavior of the hardware. Correct operation of hardware, such as electronic circuits, is usually only guaranteed by the manufacturer for certain environmental conditions and operating parameters. For example, the operation of hardware outside the specified operating voltages, operating temperatures and clock frequencies or the use of electromagnetic radiation (such as microwaves, light pulses or laser pulses or x-ray radiation) or radioactive radiation may thus produce erroneous behavior and thus be used for calculation errors . Guarding against suc...
Claims
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IPC IPC(8): G06F21/50G06F11/08
CPCG06F21/556G06F21/77H04L9/004H04L9/32H04L9/3066G06F21/55
Inventor B·迈耶
Owner INFINEON TECH AG