A data encryption and decryption scheduling method based on multi-card redundancy check

Abstract

The invention discloses a data encryption and decryption modulating method based on multi-card redundancy check, comprising the steps: pre-maintaining an encryption card state list, and maintaining a port state list for each encryption card, wherein states of the encryption cards include normality, failure and saturation, and port states include in-use state and idle state; initiating a waiting queue for storing encryption and decryption tasks; when a current encryption-decryption task is received, allocating the current encryption-decryption task to two target ports, not in use, of two encryption cards in normal use in order to specified encryption or decryption, determining that the current encryption-decryption task is successfully executed if output is uniform, and updating and maintaining the encryption card state list and the port state list during calling. Data error, calling error and other situations of the encryption card are considered, redundancy is established in the multi-card environment by a specific scheduling algorithm, multi-encryption-card parallel performance and system availability are maximally improved, and data error rate is decreased.

Description

technical field [0001] The invention relates to computer data encryption and decryption technology based on encryption cards, in particular to a data encryption and decryption scheduling method based on multi-card redundancy check. Background technique [0002] There is a need to encrypt important data within the government, the military, and companies or organizations that require confidentiality. For security and performance considerations, existing data encryption systems generally use hardware encryption and decryption. The encryption hardware is in the form of a PCI card (hereinafter referred to as the encryption card). The encryption and decryption speed of a single encryption card has an upper limit. For a single host, sometimes a single encryption card cannot meet the needs of processing a large amount of data in speed, so multiple encryption cards can be inserted at the same time to share the task. Because the tasks of encrypting and decrypting each data block ar...

AI Technical Summary

Problems solved by technology

[0004] In actual use, the encryption card may fail, resulting in the failure of encryption and decryption

For a single card system, since the failure of the encryption card is a single point of failure, it will lead to the failure of the entire system

For a multi-card system, when some encryption cards fail, using the current scheduling algorithm, when a task is allocated to a faulty encryption card, the task will fail. Overall, some tasks will fail

So even a multi-card system cannot redundantly encrypt card failures

[0005] In the actual encryption and decryption process of the encryption card, it is found that sometimes when the key and data are correct, the wrong result will appear

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