Method for generating stateful hash based signatures of messages to be signed
US12192375B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 13, 2019 |
| Grant date | Jan 7, 2025 |
| Priority date | — |
| Expiry date | Jul 4, 2041 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/3239
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Generation of stateful hash based signatures of messages to be signed in a key management system including a plurality of tamper-proof computing devices by a manager device of generating a master merkle tree, triggering generating a predetermined number of slave merkle trees, for each message to be signed selecting a tamper-proof computing device for signing, assigning one yet unassigned generated slave merkle tree to said selected tamper-proof computing device, generating and sending to said selected tamper-proof computing device a command comprising said message to be signed, data enabling to obtain an OTS private key of the assigned slave merkle tree to be used to generate an OTS signature of the message to be signed, and a state value associated to said assigned slave merkle tree and keeping track of the OTS private keys of said assigned slave merkle tree already used for generating a signature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.