Method for encrypting and authenticating efficient data without authentication center

A technology that encrypts data and does not require authentication. It is applied in user identity/authority verification and key distribution. It can solve problems such as large computing burden, communication burden and data expansion, inability to perform offline data protection operations, and limit technology promotion and application. Avoid calculation burden, reduce work burden, and have good application prospects
CN101931536BInactive Publication Date: 2012-05-30WUHAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
WUHAN UNIV OF TECH
Publication Date
2012-05-30
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention discloses a method for encrypting and authenticating efficient data without an authentication center, which comprises the following steps of: (1) determining system parameters; (2) registering information receiving and transmitting parties; (3) performing data encryption and authentication protection on plaintext messages to be sent to a receiver by a sender; and (4) reading and authenticating the received data messages by the receiver, wherein in the step (3), ciphertexts, signature parameters and electronic signatures are combined by calculating secret key parameters, calculating the ciphertexts and the signature parameters on the plaintext messages according to the secret key parameters and calculating the electronic signatures according to the plaintext messages, the signature parameters and the like to form and send the data messages. Through the method of the invention, data encryption and the authentication of content integrity on the plaintext messages can be performed simultaneously and efficiently, and a series of problems caused by adopting the authentication center in the conventional method can be prevented.
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Description

technical field

[0001] The invention relates to data protection technology in the fields of e-commerce, e-government, information security and network communication, in particular to an efficient data encryption and authentication method without an authentication center. Background technique

[0002] In various fields related to information such as e-commerce system, e-government system, information security system, and network communication system, data encryption technology and electronic signature technology are two basic data protection technologies. Among them, data encryption technology protects the confidentiality of data. It converts data into meaningless ciphertext through encryption keys and data encryption algorithms to prevent data from being accessed by unauthorized persons. The electronic signature technology authenticates and protects the integrity and source of data, completely simulating the functions of handwritten signatures in real life, and has the capab...

Claims

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