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A method for constructing subliminal channels on lattice signatures without one-way trapdoors

A trapdoor and one-way technology, applied in the field of information hiding, can solve problems such as breaches, and achieve the effect of ensuring security

Active Publication Date: 2019-10-01
SUN YAT SEN UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, both GGH and NTRUSIGN signature schemes have been broken one after another

Method used

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  • A method for constructing subliminal channels on lattice signatures without one-way trapdoors

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Experimental program
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Embodiment 1

[0051] The main steps to construct a wideband or narrowband subliminal channel on a lattice signature without a one-way trapdoor are as follows:

[0052] 1) The sender of the subliminal channel embeds the subliminal information to be transmitted into the random redundant bits of the lattice signature, and uses the lattice signature scheme to sign the information;

[0053] 2) The receiver of the subliminal channel verifies whether the signature is legal, and if the signature is legal, the receiver of the subliminal channel extracts the subliminal information.

[0054] 1. The process of constructing a broadband subliminal channel is as follows:

[0055] The sender of the subliminal channel embeds the subliminal information to be transmitted into the random redundant bits of the lattice signature, and uses the lattice signature scheme to sign the information as follows:

[0056] 1) The sender of the subliminal channel and the receiver of the subliminal channel secretly share the...

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Abstract

The invention belongs to the field of information hiding, and particularly relates to a method for building a broadband or narrowband subliminal channel on a lattice signature without a one-way trap door. The method mainly comprises the following steps that (1) subliminal information Msub is embedded into a random redundancy bit of the lattice signature without the one-way trap door by a subliminal channel sender; information M to be subjected to signature is subjected to signature by a scheme of the lattice signature without the one-way trap door; (2) a subliminal channel receiver verifies whether the signature is legal or not; if the signature is legal, the subliminal channel receiver extracts subliminal information Msub. The method has the advantages that the subliminal channel is directly embedded into the random redundancy bit; the calculation complexity is lowered; high practicability is realized.

Description

technical field [0001] The invention belongs to the field of information hiding, in particular to a method for constructing a subliminal channel on a lattice signature without a one-way trapdoor. Background technique [0002] The 21st century is the information age, information has penetrated into every aspect of social life, and the security of information has been paid more and more attention. Information encryption converts information from plaintext to ciphertext. After intercepting the ciphertext, the eavesdropper must attack the ciphertext to obtain the plaintext information. With the growth of computer computing power, the security of many information encryption schemes has been threatened. Information hiding is a new technology that hides secret information in public information, and its purpose is to establish a covert channel between the sender and receiver to transmit secret information. Different from information encryption, information hiding technology makes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L9/32
CPCH04L9/3247
Inventor 李锐敏张方国田海博
Owner SUN YAT SEN UNIV