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Journal of Kufa for Mathematics and Computer

Multiparty Quantum Cryptography with Block Cipher RC6 (B- MQKD)

Iqtidar Zohair, Salah Abdulhadi Albermany

Published Sep 12, 2019• 0 citations
Publisher

Abstract

The proposed B-MQKD method uses a quantum key distribution to generate a key and provide an authentication amongst many parties. It uses concepts of block cipher by using RC6 algorithm for encryption. The mix concept in B-MQKD (quantum and block cipher) gives the algorithm more authentication, randomness, and security which make it difficult to find the original message by attackers. In this paper using BB84 among three parties make it possiple to give the key to many users in a secret way.

DOI
10.31642/jokmc/2018/060201

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The proposed B-MQKD method uses a quantum key distribution to generate a key and provide an authentication amongst many parties. It uses concepts of block cipher by using RC6 algorithm for encryption. The mix concept in B-MQKD (quantum and block cipher) gives the algorithm more authentication, randomness, and security which make it difficult to find the original message by attackers. In this paper using BB84 among three parties make it possiple to give the key to many users in a secret way.
Quantum cryptography is known the most up-to-date in domain of realistic cryptography notably the menace of quantum cryptanalysis which threatens security firmness of public key cryptography. Quantum cryptography has a famous scheme known as Quantum Key Exchange (QKE), that administrates generation and distribution of a secured random key between legitimate channel users depicted as sender and receiver. Consequently, such key could be used as a key for one-time pad hybrid cryptosystems to encrypt and authenticate messages over a quantum channel. (QKE) is based on unifying quantum physics concepts and information theory with conventional cryptographic schemes that target to produce a short secret session key between any two legitimate parties. An important phase in key creation of BB84 protocol is Privacy Amplification phase where two interconnecting parties distill highly secret shared key from a larger body of shared key, which is only partially secret. The two legitimate parties publicly exchange information to create a compressed key free from biased bits known by an eavesdropper.
Quantum cryptography is known the most up-to-date in domain of realistic cryptography notably the menace of quantum cryptanalysis which threatens security firmness of public key cryptography. Quantum cryptography has a famous scheme known as Quantum Key Exchange (QKE), that administrates generation and distribution of a secured random key between legitimate channel users depicted as sender and receiver. Consequently, such key could be used as a key for one-time pad hybrid cryptosystems to encrypt and authenticate messages over a quantum channel. (QKE) is based on unifying quantum physics concepts and information theory with conventional cryptographic schemes that target to produce a short secret session key between any two legitimate parties. An important phase in key creation of BB84 protocol is Privacy Amplification phase where two interconnecting parties distill highly secret shared key from a larger body of shared key, which is only partially secret. The two legitimate parties publicly exchange information to create a compressed key free from biased bits known by an eavesdropper.
Based on a quantum shift register, a novel quantum block cryptographic algorithm that can be used to encrypt classical messages is proposed. The message is encoded and decoded by using a code generated by the quantum shift register. The security of this algorithm is analysed in detail. It is shown that, in the quantum block cryptographic algorithm, two keys can be used. One of them is the classical key that is used in the Hill cipher algorithm where Alice and Bob use the authenticated Diffie Hellman key exchange algorithm using the concept of digital signature for the authentication of the two communicating parties and so eliminate the man-in-the-middle attack. The other key is generated by the quantum shift register and used for the coding of the encryption message, where Alice and Bob share the key by using theBB84 protocol. The novel algorithm can prevent a quantum attack strategy as well as a classical attack strategy. The problem of key management is discussed and circuits for the encryption and the decryption are suggested.
Secure communication plays a vital role now-a-days. Modern-day secure communication is made possible via cryptography. Modern cryptographic algorithms are based on the process of factoring large integers into their primes, as they are intractable. But the cryptography nowadays is vulnerable to technological advances in computing power like quantum computing and evolution in math to quickly reverse one-way functions like factorization of large integers. Incorporating quantum physics concepts into cryptography is the answer, which results in an assessment of quantum cryptography. A unique type of cryptography known as quantum cryptography makes advantage of quantum mechanics to provide complete protection against the transmitted message. Quantum Key Distribution (QKD), a random binary key distribution used in quantum cryptography, enables communication participants to recognize unauthorized listeners. Quantum Key Distribution (QKD) is likely the most advanced quantum technology currently accessible with full stack systems already in use. This project’s goal is to develop secure and encrypted communication between the parties with the help of a web application using the BB84 protocol.
Quantum key distribution is a sub topic under quantum cryptography where two parties distribute a shared random bit string known only to them and which can be used as a key to encrypt and decrypt messages. This paper proposes a novel method of QKD to distribute the secret key. The basic concept of QKD remains the same but the process by which the key is exchanged between the two parties is different and is much more secure than the existing QKD protocols. The proposed method exploits the concept of hamming weight.
ABSTRACT In our days Iot technology used in a wide aspect of life and became an important topic for researchers in the scope of the technologies. Although all these benefits it needs more security and stays have security intimidation, such as data breaking or channel attacks via eavesdroppers and viruses, especially when the people used IoT for long distance for example for city or country, etc. or even using IoT to transfer secret information about things in big offices, for this reasons needed to use a method which increases IoT security and protection our special data. In this paper, we will use the internet of things IoT with quantum key distribution (QKD) and block cipher RC6 algorithm, where QKD is the science and art of using the quantum mechanical effect to perform cryptographic tasks and generates a secret key. Also, we need to overcome the loss of information which occurs because the information transition effected by noise or outside operators when using quantum cryptography, so the optimal solution is using the quantum bit error rate (QBER) to produce a more safe way for quantum communication among things in IoT techniques. QBER is done by using servers to correct error after sending a key for decryption method by another server to decrypt information using RC6 block cipher algorithm, during creating a secret key we need to calculate quantum correct probability and compare the result with threshold suggested and agreed by the servers.