Method and system for verifying file integrity through internet
An integrity verification, Internet technology, applied in transmission systems, electrical components, etc., can solve the problems of forgery and tampering, file integrity damage, etc., to achieve the effect of enhancing usability, reducing load, and increasing opportunities for offline verification
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[0051] The present invention will be further described below in conjunction with the accompanying drawings, but the embodiments of the present invention are not limited thereto.
[0052] The client requests to verify the signing certificate of the server-generated file F:
[0053] 1) The client communicates with the verification server to determine the signature protocol used;
[0054] 2) According to the signature protocol, MD5 and SHA1 are used, and the first 2 / 3 and the last 2 / 3 of F are selected to calculate the hash value, and then all 2 hash values are concatenated to generate a string, and then SHA2 is used to calculate The hash value H of this string;
[0055] 3) Send a request to the verification server to generate a signature certificate for H, which includes H and the signature agreement number;
[0056] 4) The verification server responds to the client's signature request, generates and returns file A containing H's signature certificate;
[0057] 5) Pack A an...
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