Collision-resistance method for mapping public-private key pairs by utilizing uniform user identification

A technology of user identification and public-private key pairs, applied in the field of communication network cryptography, can solve problems affecting public-private key pairs, collisions, etc.
CN101447980AActive Publication Date: 2009-06-03NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
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Patent Information

Authority / Receiving Office
CN Β· China
Current Assignee / Owner
NO 54 INST OF CHINA ELECTRONICS SCI & TECH GRP
Publication Date
2009-06-03

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Abstract

The invention discloses a collision-resistance method for mapping public-private key pairs by utilizing a uniform user identification, relating to the technology of mapping public-private key pair through a user identification in a non-collision manner in the filed of communication network cryptology. The method uses an extensible uniform user identifier with the length of 56 bits to prevent collision of the user public-private key pairs with the assistance of a circle Hash collision algorithm and carries out identification mapping by row mapping and column permutation algorithm of Hash identification value so as to generate a great number of user public-private key pairs by a plurality of private key seeds. On the basis of not losing computational efficiency, the method improves the security and has the advantages of convenient usage and the like, and is particularly applied to public-private key pair mapping through identification by a large number of users in communication network as well as security certification and communication security by the public-private key pairs.
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Description

technical field

[0001] The invention relates to a collision-resistant unified user identification public-private key pair mapping method in the field of communication network cryptography, and is especially suitable for large-scale users in a communication network to map public-private key pairs through identification and perform security authentication and communication through public-private key pairs Confidential application. Background technique

[0002] The previous public-private key identification mapping algorithm can only map a fixed public-private key pair to a given identification. Because both the hash function and the public-private key mapping algorithm used in it have a certain collision, the public-private key identification mapping algorithm also has a certain probability of collision probability. In the event of a public-private key pair collision, the collision must be eliminated by modifying the public-private key matrix.

[0003] In the identity mappin...

Claims

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