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An Approach to Secure Authentication Protocol with Group Signature based Quantum Cryptography

V. Padmavathi, M. Madhavi, N.V.S. Nagalakshmi

Published Jan 1, 2013• 4 citations
OpenAlex

Abstract

Abstract-This paper proposes a secure authentication protocol in a new direction with group signature based Quantum cryptography for a networked organization. The group signature setting has a group with copious members and one manager. The proposed protocol uses a trusted centre TC generates a large heap of public/private key pairs. Every member of the group has a different list of unique private keys which is distributed by TC to sign a document. The keys are immunable using quantum key distribution protocol which acquires the properties of quantum mechanics. Keywords- group signature, public/private key, quantum cryptography, quantum key distribution protocol QKDP, Trusted Center TC. I.

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Abstract-This paper proposes a secure authentication protocol in a new direction with group signature based Quantum cryptography for a networked organization. The group signature setting has a group with copious members and one manager. The proposed protocol uses a trusted centre TC generates a large heap of public/private key pairs. Every member of the group has a different list of unique private keys which is distributed by TC to sign a document. The keys are immunable using quantum key distribution protocol which acquires the properties of quantum mechanics. Keywords- group signature, public/private key, quantum cryptography, quantum key distribution protocol QKDP, Trusted Center TC. I.
Abstract With the continuous development of quantum technology, the quantum signature as an application of quantum cryptography has received great attention. In this paper, we propose a public-key quantum group blind signature scheme based on single-qubit rotations. In this scheme, the group manager generates a public key. Each group member randomly generates his own private key according to the public key. The signer uses his private key and random sequence to generate the signature. The verifier uses the public key to verify the correctness of the quantum signature. The public and private keys can be reused, which simplifies the key management of the signature system. In this scheme, the random sequence is used to enhance the security of the scheme. At the same time, the quantum efficiency is improved by using single-qubit rotations. The security analysis shows that our scheme can ensure the security of the keys, the unforgeability and the non-deniability of the signature.
Group signature allows any valid group member to sign any number of messages on behalf of the group without revealing the member identity. The group manager can reveal the identity of the signer in the case of a dispute. Most of the group signatures are based on traditional cryptography, such as RSA, ECC and discrete logarithm. But these schemes would be easily broken if quantum computers emerge. In this paper, we propose a new identity based group signature. Our signature scheme is based on bilinear maps. This identity based scheme has the security properties of group signatures. In this scheme the size of the group pubic key and the length of signatures are independent on the size of the group. This scheme is well suited for large groups. Using the same key pair the group member can sign many messages.
Emerging network applications are based on collaborative environments that rely on the secure group-based communication paradigm. These protocols use traditional public-key cryptography (PKC) for authenticating the group members and exchange secret keys. However, the foreseeable breakthrough of quantum computers represents a risk for the secure systems based on PKC. In order to prepare for such an event, quantum-secure group-based communications must be established. Post-quantumcryptography (PQC) and quantum-key distribution (QKD) are two quantum-resistant technologies that can be used for enabling the long term security in such collaborative environments. This work proposes four quantum-secure group-based communication solutions, based on contributory and decentralized protocols. PQC and hybrid technologies (PQC/QKD) are explored. The solutions use PQC Key-exchange algorithms or QKD protocols (decoy-BB84 and T12) for key generation and PQC signature algorithms for authentication. For the first time hybrid schemes for group-based technologies are designed and explored. Results show that the group-based decentralized protocol (PQC SLIMCAST) outperforms the contributory protocol PQC GAKE. The PQC-based approaches have a better performance than the QKD versions.
Abstract — Most cryptographic mechanisms such as symmetric and asymmetric cryptography, often involve the use of cryptographic keys. However, all cryptographic techniques will be ineffective if the key distribution mechanism is weak. Quantum Key Distribution or Quantum Cryptography is attracting much attention as a solution of the problem of Key Distribution; QKD offers unconditionally secure communication based on quantum mechanics. This work presents quantum key distribution protocols (QKDP) to safeguard security in large networks, ushering in new directions in classical cryptography and quantum cryptography.
In the existing study of third party authentication, for message transformation has less security against attacks such as man-in-the-middle, efficiency and so on. In this approach, we at hand give a Quantum Key Distribution Protocol (QKDP) to safeguard the security in larger networks, which uses the combination of merits of classical cryptography and quantum cryptography. Two three-party QKDPs, one implemented with implicit user authentication and the other with explicit mutual authentication, which include the following: 1. Security against such attacks as the man-in-themiddle, eavesdropping and replay. 2. Efficiency is improved as the proposed protocols contain the fewest number of communication rounds among the existing QKDPs. 3. Two parties can share and use a long-term secret (repeatedly). To prove the security of the proposed schemes, this work also presents a new primitive called the Unbiased-Chosen Basis (UCB) assumption.
Most cryptographic mechanisms such as symmetric and asymmetric cryptography, often involve the use of cryptographic keys. However, all cryptographic techniques will be ineffective if the key distribution mechanism is weak. Quantum Key Distribution or Quantum Cryptography is attracting much attention as a solution of the problem of Key Distribution; QKD offers unconditionally secure communication based on quantum mechanics. This work presents quantum key distribution protocols (QKDP) to safeguard security in large networks, ushering in new directions in classical cryptography and quantum cryptography.