Book Chapter10.1007/978-3-642-22497-3_22
Identity-based server-aided decryption
Joseph K. Liu,Cheng Kang Chu,Jianying Zhou +2 more
- 11 Jul 2011
- pp 337-352
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TL;DR: This work proposes a new notion called Identity-Based Server-Aided Decryption, which is similar to normal identity-based encryption scheme, but it further enables the receiver to decrypt the ciphertext without needing to compute pairing with the assistance of an external server.
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Abstract: Identity-Based Cryptosystem plays an important role in the modern cryptography world, due to the elimination of the costly certificate. However, all practical identity-based encryption schemes require pairing operation in the decryption stage. Pairing is a heavy mathematical algorithm, especially for resource-constrained devices such as smart cards or wireless sensors. In other words, decryption can hardly be done in these devices if identity-based cryptosystem is employed.We solve this problem by proposing a new notion called Identity-Based Server-Aided Decryption. It is similar to normal identity-based encryption scheme, but it further enables the receiver to decrypt the ciphertext without needing to compute pairing with the assistance of an external server. Secure mechanisms are provided to detect whether the server has computed correctly and prevent the server from getting any information about the plaintext or the user secret key. We give two concrete instantiations of this notion.
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Citations
Pay as You Decrypt: Decryption Outsourcing for Functional Encryption Using Blockchain
TL;DR: The adversarial model for FEPOD schemes is defined, and a generic construction of FEPod schemes is presented, which enables the user to pay a third party when it correctly completes the outsourced decryption.
62
On Lightweight Security Enforcement in Cyber-Physical Systems
Yanjiang Yang,Jiqiang Lu,Kim-Kwang Raymond Choo,Joseph K. Liu +3 more
- 10 Sep 2015
TL;DR: This paper proposes taking a whole-of-system approach to achieve system/collective lightweightness, outsource expensive computations from resource-constrained field devices to neighboring devices and equipments that have more computational capacity, and selectively protect critical data partial/selective protection of Data of Interest.
29
•Journal Article
Directly Revocable and Verifiable Key-Policy Attribute-based Encryption for Large Universe.
Hua Ma,Ting Peng,Zhenhua Liu +2 more
TL;DR: This paper presents a directly revocable and verifiable key-policy ABE scheme for large universe (DRV-KP-ABE), which supports large universe, and attributes do not need to be enumerated at stage of setup, and the trusted authority to revoke users by only updating the revocation list without interaction with non-revoked users.
Publicly verifiable ciphertexts
TL;DR: The notion of indistinguishability against adaptive chosen-ciphertext attacks in the public domain was relaxed in this paper, which is a mandatory goal in face of active attacks in a public domain.
Server-aided identity-based anonymous broadcast encryption
Hui Cui,Yi Mu,Fuchun Guo +2 more
TL;DR: This paper formalises the notion of server-aided identity-based anonymous broadcast encryption and presents a construction in the random oracle model based on pairings that achieve anonymity under adaptive corruptions in the chosen-plaintext setting.
10
References
Identity-Based Encryption from the Weil Pairing
Dan Boneh,Matthew K. Franklin +1 more
- 19 Aug 2001
TL;DR: This work proposes a fully functional identity-based encryption scheme (IBE) based on the Weil pairing that has chosen ciphertext security in the random oracle model assuming an elliptic curve variant of the computational Diffie-Hellman problem.
Identity-based cryptosystems and signature schemes
Adi Shamir
- 23 Aug 1985
TL;DR: In this article, the authors introduce a novel type of cryptographic scheme, which enables any pair of users to communicate securely and to verify each other's signatures without exchanging private or public keys, without keeping key directories, and without using the services of a third party.
Identity-Based Encryption from the Weil Pairing
Dan Boneh,Matthew K. Franklin +1 more
TL;DR: This work proposes a fully functional identity-based encryption (IBE) scheme based on bilinear maps between groups and gives precise definitions for secure IBE schemes and gives several applications for such systems.
An Identity Based Encryption Scheme Based on Quadratic Residues
TL;DR: A novel public key cryptosystem in which the public key of a subscriber can be chosen to be a publicly known value, such as his identity, which is related to the difficulty of solving the quadratic residuosity problem.
Self Protecting Pirates and Black-Box Traitor Tracing
Aggelos Kiayias,Moti Yung +1 more
- 19 Aug 2001
TL;DR: In this article, it was shown that the Boneh-Franklin (BF) scheme and the Kurosawa-Desmedt (KDS) scheme have no black-box traceability in the self-protecting model when the number of traitors is super-logarithmic.