The invention relates to the technical field of information
encryption and decryption, in particular to an image information
encryption and decryption method and
software system based on a
digital image steganography technology. According to the technical scheme, the method comprises the following steps that a carrier image format and a to-be-processed
information type are determined, the carrier image format comprises a PNG image and a
JPEG image, and the to-be-processed
information type comprises text information, picture information and audio information; encrypting the
plaintext information to generate
ciphertext information; and selecting a corresponding
steganography path according to the format of the carrier image, embedding the
ciphertext information into the carrier image, generating an encrypted image, and generating a key file recording the embedded related information. According to the method, various image formats and information types are supported, the compatibility, safety, robustness and practicability of information
encryption and decryption are improved through key encryption, face binding
verification and a compensation mechanism for
JPEG, and the method is suitable for scenes such as information protection and private transmission.