Secure multi-party random bit generation
US11729231B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Aug 26, 2021 |
| Grant date | Aug 15, 2023 |
| Priority date | — |
| Expiry date | Jan 28, 2042 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3247
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and systems for secure multi-party generation of random bits are disclosed. These random bits can be generated securely, even if some parties (i.e., less than a corruption threshold) are dishonest or malicious. Methods and systems can use secure environments in order to securely generate and store cryptographic keys. Using broadcast protocols such as Dolev-Strong, a generator computer can distribute a public protocol instance key to other participant computers. Each participant computer can generate a random bit and encrypted the random bit with the public protocol instance key, and broadcast its encrypted random bit to the other participant computers. Once each participant computer has received the encrypted random bits from all other participant computers, the private protocol instance key can be released to the participant computers, enabling the participant computers to decrypt the encrypted random bits, and calculate an output random bit based on the encrypted random bits.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.