[PDF] Top 20 User Collusion Avoidance Scheme for Privacy-Preserving Decentralized Key-Policy Attribute-Based Encryption

... proposed scheme on mobile ...novel scheme which ensures the user’s privacy with constant size ciphertext could be a potential future ...proposed scheme could be done on mobile device ... See full document

... each user an appropriate access structure that represents what the user can and cannot ...the privacy, but also to perform correct checks of the users’ clearances and to assign correct access ... See full document

... Attribute-based encryption (ABE)[1], a new public-key encryption technology, ties the user’s identity with a series of ...private key or ciphertext is defined according to the ... See full document

... public key encryption will not work ...applicable encryption mechanisms are required. Identity-based encryption (IBE) [4] mechanism allows a sender to encrypt a message to an identity ... See full document

... classified based on several properties of a scheme. Policy placement is a well-known classification, as explained in the previous ...The policy can reside in the user’s SK (KP-ABE) or in the ... See full document

... a decentralized meta-broker for inter- cloud setting is introduced in ...map user requests to cloud ...security, privacy, and trust issues; and proposes the use of encryption techniques such ... See full document

... trusted attribute authority are associated with access structures that specify which type of ciphertexts the key can ...KP-ABE scheme, which was very expres- sive in that it allowed the access ... See full document

... call Key-Policy Attribute-Based Encryption ...a user is able to ...Identity-Based Encryption (HIBE). It is the first decentralized ABE scheme with ... See full document

... call Key- Policy Attribute-Based Encryption ...a user is able to ...Identity- Based Encryption (HIBE). It is the first decentralized ABE scheme with ... See full document

... Kappes develop a new cryptosystem for fine-grained sharing of encrypted data so as to we call Key-Policy ABE. In which cryptosystem, cipher texts are label with sets of attributes and secret keys are ... See full document

... guarantee user possession of an attribute, while handling key revocation for that specific ...or collusion would only provide a single attribute, and collision would still be difficult ... See full document

... control policy which is applied over encrypted data using private keys and cipher ...the attribute set that the decryptor needs to possess in order to decrypt the cipher ...public key distributed ... See full document

... The attribute-based encryption is a promising approach that fulfills the requirements for secure data retreivalin ...ITNs. Attribute based encryption scheme enables an ... See full document

... Authentication scheme was proposed by Sushmita Ruj et al.[1]. In this the unknoun user is not allowed to access ...a user has a set of attributes in addition to its unique ...In ... See full document

... over user attributes or roles, which are managed by the key ...Multiple key authorities manage their attribute independently in DTN [9], ...of attribute-based encryption ... See full document

... anonymous key issuing protocol [12] was employed. Specifically, a user can be identified when he shared His secret keys with ...a privacy-preserving decentralized KP-ABE (PPDKP-ABE) ... See full document

... introduced attribute based en- cryption(ABE) ...the user secret key and the ciphertext are associated with a set of ...A user is able to decrypt the cipher- text if and only if at least ... See full document

... address collusion prevention as one of the main ...each user. It is used to associate every secret key with an identity by incorpo- rating it into the decryption keys issued by the ...the ... See full document

... very privacy-sensitive and require a selective disclosure of one while hiding others completely; otherwise, a user can be identified and im- personated by collecting and analyzing his ... See full document

... authority attribute based encryption system here any party can become an authority and there is no requirement for any global co-ordination other than they creation of an initial set of a common ... See full document