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An encryption method and system
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An encryption method, encryption algorithm technology
Active Publication Date: 2019-12-31
SHANDONG HUIJIA SOFTWARE TECH
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[0006] However, in terms of the technical implementation of white-box cryptography, there is no recognized safe and efficient white-box cryptography scheme so far. Therefore, it is imminent to design a safe and effective cryptographic algorithm that can resist white-box attacks. An important means to ensure network security at present
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Embodiment 1
[0037] An encryption method, the method is applied in the distributed system of server-client architecture or server-browser architecture, such as figure 1 The methods shown include:
[0038] S101. The server obtains the user's data encryption request, and returns an encryption factor.
[0039] Specifically, the data encryption request includes a keyword, the length of the data to be encrypted, and a user identifier. The data to be encrypted may be a key of an encryption algorithm. The keyword can be empty.
[0040] Specifically, the method of obtaining the encryption factor is as follows: figure 2 shown, including the following steps:
[0041] S1011. Obtain one or more group identifiers of the user according to the user identifier.
[0042] S1012. Determine the number of acquired group identifiers.
[0043] A group is a data object that can represent a communication relationship between multiple users, and terminals corresponding to each user identifier in the group ca...
[0073] The request obtaining module 2011 is used to obtain the data encryption request of the user, and the data encryption request includes the length of the data to be encrypted and the user identification;
[0074] The target group identification acquisition module 2012 is used to obtain one or more group identifications where the user is located according to the user identification; if there are multiple acquired group identifications, select a target group identification according to the agreed algorithm; If there is only one group ID obtained, the obtained group ID is the target group ID;
[0075] A characteristic value acquisition module 2013, configured to obtain a characteristic value according to the user identifier, the target group identifier and the length of the data to be encrypted according to a preset algorithm;
[0076] An encryption factor pr...
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Abstract
The invention provides an encryption method and system. An encryption factor is acquired according to a user identifier, data to be encrypted is encrypted according to the encryption factor, the data to be encrypted can also be a key of a certain encryption algorithm, and the whole encryption procedure implements a white box encryption technology capable of fusing an algorithm key into an algorithm. The encryption method and system obtain corresponding encryption factors by fully utilizing personal information and social information of a user so as to apply different encryption algorithms to different users, thereby further improving encryption complexity and data security.
Description
technical field [0001] The invention relates to the field of data security, in particular to an encryption method and system. Background technique [0002] With the development of science and technology, people's research on computer technology is more comprehensive, and there are more and more ways to detect confidential information. For cryptographic algorithms, the traditional interception and analysis of information limited to communication channels can no longer meet the needs of attackers. They have gradually begun to target the operating platforms of cryptographic algorithms (such as personal computers, servers, etc.). More and more advanced technologies observe and modify the internal state of the algorithm when it is running, so as to obtain confidential information and destroy the confidentiality, integrity, and non-repudiation that the cryptographic algorithm must protect. [0003] Such an attack is called a white-box attack. There is no security at all for trad...
Claims
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Application Information
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