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International Journal of Quantum Information

A NOVEL QUANTUM STEGANOGRAPHY PROTOCOL BASED ON PROBABILITY MEASUREMENTS

Zhanhong Wei, Xiu‐Bo Chen, Xinxin Niu, Yixian Yang

Published Oct 1, 2013• 12 citations
Publisher

Abstract

Quantum steganography is the art of hiding the fact that communications, which transmit the secret message in an insecure quantum channel, are occurring. This paper presents a novel quantum steganography protocol based on probability measurements for transmitting n qubits secret message in an insecure quantum channel. In the protocol, senders embed the secret message into the cover data by POVM measurements. Then, receivers can correctly extract the secret message and recover the cover data with a certain probability by selecting two sets of appropriate protective measurement operators to act projective measurements, respectively. More importantly, the existence of the secret message has no influence on the cover data. In addition, the security of our protocol does not rely on other protocols. The paper analyzes the secrecy and the security in detail.

DOI
10.1142/s0219749913500688

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Several approaches and techniques exist to make communication via the internet secure, one of these approaches is steganography. Computer steganography is a technique used to conceal data within cover media, ensuring that its presence remains undetected by others. We investigate the steganography potential applications in quantum communication and assess its benefits in the context of secret information transmission. Quantum computers, built on the principles of quantum physics, have introduced new possibilities for researchers in security and computer science. This paper explores the possibilities of realizing a quantum steganography communication, the challenges and its achievements of quantum steganography to tackle a wide range of security and privacy challenges. The article deals with the steganography system which hides text inside images and after that realize quantum communication. The secret message is hidden in the cover image using Least Significant Bit (LSB) algorithm. The paper proposes an information transmission scheme with a quantum channel enabled and visualization of quantum steganography protocol.
Many people use the internet for communication, but there is a problem with protecting their information. To ward off the attackers, they need secure communication such as cryptography and steganography techniques. To maintain the security of information, improving the technology of steganography is necessary. In this paper, we propose a novel method to create the secret quantum text steganography more difficult for attackers to intercept. Firstly, the proposed method generates a secret message as a binary string by combining the secret key of the BB84 protocol and message. Then, the secret message is embedded in the first character of each line in the cover text. In the cover text, the first character of each line is changed to the case of the specific character, such as uppercase or lowercase, according to the secret message to be hidden. The cover text uses the English language. Experimental results describe the effectiveness of the proposed method for hiding data within the cover text while maintaining a high level of security. The proposed model is able to secure data transmission because it was difficult for the attacker to reveal or intercept data.
Steganography is the technique of hiding secret information by embedding it in a seemingly ``innocent'' message. We present protocols for hiding quantum information by disguising it as noise in a codeword of a quantum error-correcting code. The sender (Alice) swaps quantum information into the codeword and applies a random choice of unitary operation, drawing on a secret random key she shares with the receiver (Bob). Using the key, Bob can retrieve the information, but an eavesdropper (Eve) with the power to monitor the channel, but without the secret key, cannot distinguish the message from channel noise. We consider two types of protocols: one in which the hidden quantum information is stored locally in the codeword, and another in which it is embedded in the space of error syndromes. We analyze how difficult it is for Eve to detect the presence of secret messages, and estimate rates of steganographic communication and secret key consumption for specific protocols and examples of error channels. We consider both the case where there is no actual noise in the channel (so that all errors in the codeword result from the deliberate actions of Alice), and the case where the channel is noisy and not controlled by Alice and Bob.
Quantum steganography is the art of hiding secret information in an insecure quantum channel. Recently, it is proposed a quantum steganography protocol based on the tensor product of Bell states to transmit classical 4-bit secret message per round. However, it has permits a small hidden capacity. In this work, an improvement of that quantum steganography protocol to transmit 8-bit secret message per round is proposed. The improved protocol uses tensor product of Bell states and unitary transformations with two groups of sixteen tensor products of two Bell states rather than 256 elements of tensor product of four Bell states. Simulations conducted shows that the improved protocol has superior performance in terms of imperceptibility as well as high security compared with the competitive protocol.
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