Information Hiding Based on DNA Steganography

As a special cryptography, DNA steganography is safer than ordinal cryptography, only if the primer sequences are concealed from an adversary. However, concealing the primer sequences from an adversary is not easy. Further more, it is possible for an adversary to decipher this special cryptography without the primer sequences. We have researched on how to overcome the security deficiency of DNA steganography and developed a message hiding method based on DNA steganography. We designed some procedures to encrypt a message and then decompose the cipher text into two parts. The sender uses DNA steganography to send one part. If the microdot is assumed or contaminated, the message will be encrypted and decomposed again and again until the microdot is not assumed or contaminated. If the microdot is not assumed or contaminated, the corresponding part will be publicly sent. The novelty of the proposed method is that introduced message decomposing to solve the security problem of DNA steganography. Security analysis shows that on the basis of the proposed method, the security problem of DNA steganography can be surmounted and then a message can be sent and concealed from an adversary.