Method for detecting errors of and automatically resetting encryption chip in encryption card

Abstract

The invention provides a method for detecting errors of and automatically resetting an encryption chip in an encryption card. The method is characterized by comprising a monitoring control chip and comprises the following steps: high-level application software sends an encryption / decryption command or data to the encryption chip via the monitoring control chip; the monitoring control chip automatically adds a chip monitoring command to the head of the encryption / decryption command; after the monitoring command enters into the encryption chip, the encryption chip returns own inner state information; the monitoring control chip judges the inner state information of the encryption chip, sends a reset command and resets the encryption chip if the inner state information is inconsistent with the expected value and continuously carries out encryption / decryption if the inner state information is consistent with the expected value; and in the encryption / decryption process, the monitoring control chip monitors the data return time of the encryption chip, considers that the encryption card has errors if the data return time exceeds the preset value and sends the reset command to reset the encryption card. The method has the beneficial effects of effectively solving the problem that the encryption card has errors in the encryption / decryption process and improving the working efficiency of the encryption card.

Description

technical field [0001] The invention relates to a control method for an encryption chip on an encryption card, in particular to an error detection and automatic reset method for the encryption chip in the encryption card. Background technique [0002] In the field of encryption card application, the encryption chip is the core device of the encryption card, and all encryption and decryption operations need to be completed through the encryption chip. However, the encryption chip may have errors due to internal logic or external application reasons. This error will lead to errors in the encryption results, which will cause errors in the upper layer application, and in severe cases, the data will have unrecoverable fatal results. [0003] At present, the encryption card method is to implement monitoring through upper-layer software, and to detect the encryption card at intervals of one end. If a problem is found, the chip reset or reset command is sent through the software to ...

AI Technical Summary

Problems solved by technology

In the latter case, the encryption and decryption services are stopped due to server downtime, which adversely affects practical applications

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