scholarly journals Key exchange using biometric identity based encryption for sharing encrypted data in cloud environment

2017 ◽  
Author(s):  
Waleed K. Hassan ◽  
Hisham Al-Assam
Keyword(s):  
Key Exchange ◽  
Cloud Environment ◽  
Encrypted Data ◽  
Identity Based Encryption ◽  
Identity Based

scholarly journals Identity-Based Encryption Transformation for Flexible Sharing of Encrypted Data in Public Cloud

2020 ◽  
Vol 15 ◽  
pp. 3168-3180
Author(s):  
Hua Deng ◽  
Zheng Qin ◽  
Qianhong Wu ◽  
Zhenyu Guan ◽  
Robert H. Deng ◽  
...  
Keyword(s):  
Public Cloud ◽  
Encrypted Data ◽  
Identity Based Encryption ◽  
Identity Based

scholarly journals Identity based Encryption with Cloud Revocation Authority

2019 ◽  
Vol 9 (1S2) ◽  
pp. 36-38
Keyword(s):  
Associate Degree ◽  
Cloud Service ◽  
Public Key Infrastructure ◽  
Key Exchange ◽  
Public Key ◽  
Computation Techniques ◽  
Identity Based Encryption ◽  
Diffie Hellman ◽  
Identity Based ◽  
Diffie Hellman Key Exchange

Identity-based coding/encryption (IBE) is a public key encrypted system that take outs the strain of public key infrastructure (PKI) and certified administration in standard crypto public key settings. In this public key system is not used, the downside may be a crucial thing in IBE settings. Many IBE schemes are proposed relating to this issue. Recently, by embedding associate degree computation techniques has been into IBE, Li et al. proposed an Identity-based encryption theme along with a keyupdate cloud service supplier. Their theme has 2 things one is that the computation overhead and other is communication prices are more than previous IBE schemes. The defect is lack of quantify ability within the sense that the key-update cloud service supplier should keep a secret worth for every user. With this article, we have a tendency to propose a replacement rescindable IBE theme with a cloud revocation authority (CRA) to solve the problems of 2 short things. The work is drastically improved and also the cloud revocation authority holds a secret for all users. For security purpose, we have a tendency to show that the proposed theme is totally secure beneath the additive Diffie-Hellman key Exchange (DBDH) assumption. Finally, we have a tendency to extend the proposed Identity-based encryption theme to gift a CRA cloud revocation authority authentication theme with limited privileges for an oversized range of assorted cloud technique services.

Lattice-Based Identity-Based Homomorphic Conditional Proxy Re-Encryption for Secure Big Data Computing in Cloud Environment

2017 ◽  
Vol 28 (06) ◽  
pp. 645-660 ◽  
Author(s):  
Chunguang Ma ◽  
Juyan Li ◽  
Weiping Ouyang
Keyword(s):  
Cloud Computing ◽  
Big Data ◽  
Data Sharing ◽  
Homomorphic Encryption ◽  
Encryption Scheme ◽  
Cloud Environment ◽  
Public Cloud ◽  
Encrypted Data ◽  
Identity Based ◽  
Big Data Computing

With the arrival of the era of big data, more and more users begin to adopt public cloud storage to store data and compute data. Sharing large amounts of sensitive data in the public cloud will arouse privacy concerns. Data encryption is a widely accepted method to prevent information leakage. How to achieve the cloud sharing and cloud computing of big data is a challenging problem. Conditional proxy re-encryption can solve cloud sharing, and homomorphic encryption can achieve cloud computing. In this paper, we combine conditional proxy re-encryption with homomorphic encryption to construct a lattice-based identity-based homomorphic conditional proxy re-encryption for secure big data computing in cloud environment. The scheme can not only realize the encrypted data sharing in the cloud, but also can realize the encrypted data computing in the cloud. That is, the homomorphic conditional proxy re-encryption scheme can homomorphically evaluate ciphertexts no matter ciphertexts are “fresh” or re-encrypted (re-encrypted ciphertexts can come from different identities). The constructed scheme modifies the homomorphic proxy re-encryption scheme of Ma et al. We also use the approximate eigenvector method to manage the noise level and decrease the decryption complexity without introducing additional assumptions. At last, we prove that the scheme is indistinguishable against chosen-plaintext attacks, key privacy secure and master secret secure.

Anonymous Hierarchical Identity-Based Encryption with Short Ciphertexts

2011 ◽  
Vol E94-A (1) ◽  
pp. 45-56 ◽  
Author(s):  
Jae Hong SEO ◽  
Tetsutaro KOBAYASHI ◽  
Miyako OHKUBO ◽  
Koutarou SUZUKI
Keyword(s):  
Identity Based Encryption ◽  
Identity Based
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