A Method and System for Information Hiding Based on Fingerprint Image

Abstract

The invention discloses an information hiding method based on a fingerprint image. The information hiding method comprises the following steps that: a key generation center generates a private key; the key generation center takes a fingerprint image as a carrier image, and performs image normalization processing on the fingerprint image; the key generation center determines an embedding area of anormalized fingerprint image; the key generation center acquires a key based on a Logistic chaotic sequence and a singular value decomposition transformational algorithm; the key generation center embeds the private key into the embedding area; a user terminal acquires the fingerprint image containing the private key based on a fingerprint of a user; and the user terminal restores the embedding area through chaos, performs decryption by using the key to obtain an original fingerprint image, and acquires an original private key through a key extraction center. Through adoption of the information hiding method and system, the private key is hidden in a fingerprint image carrier which has extremely high stability and cracking difficulty, so that the private key is transmitted in a hidden way,and the security of the private key is ensured effectively. Meanwhile, the invention also discloses an information hiding system based on the fingerprint image.

Description

technical field [0001] The invention belongs to the technical field of cryptography and information security, in particular to an information hiding method and system based on a fingerprint image. Background technique [0002] With the development and popularization of information technology and Internet technology, information security issues have become increasingly prominent, and how to ensure information security has become the focus of attention. Covert communication is an important aspect of information security. At this stage, the ways to realize secret communication mainly include encryption technology and information hiding. Among them, encryption technology is the most commonly used covert communication technology. Through the encryption key, important information is encrypted into ciphertext for transmission, and the information cannot be deciphered without the key. Information hiding technology involves cryptography, information theory, mathematics, computer vi...

AI Technical Summary

Problems solved by technology

On the one hand, although the carrier is encrypted, it is still easy to be broken by an attacker, and there is a danger of leaking the private key. face the risk of private key distortion

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