Abstract-based software trusted message implementation method

Abstract

The invention discloses an abstract-based software trusted message implementation method which is based on a language-level message library MPI and comprises the following steps: S1, a message sendercalculates an abstract D of a user message M, and calls a network driving interface to send the M and the D to a message receiver in sequence; s2, the receiver of the message receives the M and the Dfrom the sender to obtain messages M'and D 'corresponding to the M and the D; S3, the receiver of the message computes a digest D "of M '; and S4, the receiver of the message compares the D' with theD ', and if the D' is the same as the D ', the content of the received message is credible, otherwise, the alarm exits. The method directly verifies the correctness of the content of the message froma message level, is more flexible and convenient, is less limited by resources, has high credibility, and can reflect the credibility of the message more directly and more completely.

Description

technical field [0001] The invention relates to a method for realizing a digest-based software trusted message, which belongs to the technical field of computers. Background technique [0002] During the communication process, the transmission of messages may be subject to external interference such as channel noise, resulting in errors, resulting in inconsistencies between the content of the message received by the message receiver and the content sent by the sender. However, the error detection algorithm usually used by network hardware has a certain probability of false positives and false positives due to the limitations of performance and hardware structure; moreover, the packet layer error checking used by hardware cannot fully guarantee the data at the message layer. correctness. [0003] Existing message credibility usually relies on network hardware to check data packets to ensure that this error detection mechanism has two disadvantages: 1. The hardware usually us...

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Problems solved by technology

[0002] During the communication process, the transmission of messages may be subject to external interference such as channel noise and cause errors, resulting in inconsistencies between the content of the message received by the message receiver and the content sent by the sender

However, the error detection algorithm usually used by network hardware has a certain probability of false positives and false positives due to the limitations of performance and hardware structure; moreover, the packet layer error checking used by hardware cannot fully guarantee the data at the message layer. correctness

[0003] Existing message credibility usually relies on network hardware to check data packets to ensure that this error detection mechanism has two disadvantages: 1. The hardware usually uses a low-overhead CRC (Cyclic Redundancy Check, Cyclic Redundancy Check) algorithm As a data packet error detection algorithm, the bit error rate of the CRC algorithm is limited by the number of hardware bits; 2. For high-level users, the accurate transmission of data packets does not mean that the user information is correct, because when the data packet is converted to the user The message process also includes steps such as packet header parsing and memory copying that may cause message content errors

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