CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the Cloud
In e-health systems, patients encrypt their personal health data for privacy purposes and upload them to the cloud. There exists a need for sharing patient health data with doctors for healing purposes in one’s own preferred order. To achieve this fine-gained access control to delegation paths, some...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-04-01
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| Series: | Applied Sciences |
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| Online Access: | https://www.mdpi.com/2076-3417/12/9/4353 |
| _version_ | 1797505654443737088 |
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| author | Chengdong Ren Xiaolei Dong Jiachen Shen Zhenfu Cao Yuanjian Zhou |
| author_facet | Chengdong Ren Xiaolei Dong Jiachen Shen Zhenfu Cao Yuanjian Zhou |
| author_sort | Chengdong Ren |
| collection | DOAJ |
| description | In e-health systems, patients encrypt their personal health data for privacy purposes and upload them to the cloud. There exists a need for sharing patient health data with doctors for healing purposes in one’s own preferred order. To achieve this fine-gained access control to delegation paths, some researchers have designed a new proxy re-encryption (PRE) scheme called autonomous path proxy re-encryption (AP-PRE), where the delegator can control the whole delegation path in a multi-hop delegation process. In this paper, we introduce a certificateless autonomous path proxy re-encryption (CLAP-PRE) using multilinear maps, which holds both the properties (i.e., certificateless, autonomous path) of certificateless encryption and autonomous path proxy re-encryption. In the proposed scheme, (a) each user has two public keys (user’s identity and traditional public key) with corresponding private keys, and (b) each ciphertext is first re-encrypted from a public key encryption (PKE) scheme to an identity-based encryption (IBE) scheme and then transformed in the IBE scheme. Our scheme is an IND-CPA secure CLAP-PRE scheme under the <i>k</i>-multilinear decisional Diffie–Hellman (<i>k</i>-MDDH) assumption in the random oracle model. |
| first_indexed | 2024-03-10T04:21:41Z |
| format | Article |
| id | doaj.art-2bd577fb67744f609268802fc86cec91 |
| institution | Directory Open Access Journal |
| issn | 2076-3417 |
| language | English |
| last_indexed | 2024-03-10T04:21:41Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Applied Sciences |
| spelling | doaj.art-2bd577fb67744f609268802fc86cec912023-11-23T07:47:49ZengMDPI AGApplied Sciences2076-34172022-04-01129435310.3390/app12094353CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the CloudChengdong Ren0Xiaolei Dong1Jiachen Shen2Zhenfu Cao3Yuanjian Zhou4Shanghai Key Laboratory of Trustworthy Computing, East China Normal University, Shanghai 200062, ChinaShanghai Key Laboratory of Trustworthy Computing, East China Normal University, Shanghai 200062, ChinaShanghai Key Laboratory of Trustworthy Computing, East China Normal University, Shanghai 200062, ChinaShanghai Key Laboratory of Trustworthy Computing, East China Normal University, Shanghai 200062, ChinaShanghai Key Laboratory of Trustworthy Computing, East China Normal University, Shanghai 200062, ChinaIn e-health systems, patients encrypt their personal health data for privacy purposes and upload them to the cloud. There exists a need for sharing patient health data with doctors for healing purposes in one’s own preferred order. To achieve this fine-gained access control to delegation paths, some researchers have designed a new proxy re-encryption (PRE) scheme called autonomous path proxy re-encryption (AP-PRE), where the delegator can control the whole delegation path in a multi-hop delegation process. In this paper, we introduce a certificateless autonomous path proxy re-encryption (CLAP-PRE) using multilinear maps, which holds both the properties (i.e., certificateless, autonomous path) of certificateless encryption and autonomous path proxy re-encryption. In the proposed scheme, (a) each user has two public keys (user’s identity and traditional public key) with corresponding private keys, and (b) each ciphertext is first re-encrypted from a public key encryption (PKE) scheme to an identity-based encryption (IBE) scheme and then transformed in the IBE scheme. Our scheme is an IND-CPA secure CLAP-PRE scheme under the <i>k</i>-multilinear decisional Diffie–Hellman (<i>k</i>-MDDH) assumption in the random oracle model.https://www.mdpi.com/2076-3417/12/9/4353data sharingautonomous pathproxy re-encryptioncertificatelessmulti-hopIND-CPA |
| spellingShingle | Chengdong Ren Xiaolei Dong Jiachen Shen Zhenfu Cao Yuanjian Zhou CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the Cloud Applied Sciences data sharing autonomous path proxy re-encryption certificateless multi-hop IND-CPA |
| title | CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the Cloud |
| title_full | CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the Cloud |
| title_fullStr | CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the Cloud |
| title_full_unstemmed | CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the Cloud |
| title_short | CLAP-PRE: Certificateless Autonomous Path Proxy Re-Encryption for Data Sharing in the Cloud |
| title_sort | clap pre certificateless autonomous path proxy re encryption for data sharing in the cloud |
| topic | data sharing autonomous path proxy re-encryption certificateless multi-hop IND-CPA |
| url | https://www.mdpi.com/2076-3417/12/9/4353 |
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