Identity-based hash proof system configuration apparatus, identity-based encryption apparatus, identity-based hash proof system configuration method and program
US11658806B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jun 21, 2019 |
| Grant date | May 23, 2023 |
| Priority date | — |
| Expiry date | Mar 18, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3073
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
An ID-based hash proof system configuration apparatus includes a processor, and a memory storing program instructions that cause the processor to receive a security parameter, and output a public parameter and a master private key by using a multi identity-based encryption (MIBE) setup algorithm and a key K randomly selected, receive the public parameter, the master private key, and an identifier, and output a private key by using a bit value ri (1≤i≤n) that is selected, and a MIBE key generation algorithm, receive the public parameter and the identifier, and output a ciphertext and a key k by using a MIBE encryption algorithm, receive the public parameter and the identifier, and output a wrong ciphertext by using the MIBE encryption algorithm, and receive the public parameter, the private key, the identifier, and the ciphertext, and output the key k by using a MIBE decryption algorithm.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.