Binding of cryptographic operations to context or speculative execution restrictions
US11250165B2 · kind B2 · utility
8Cited by
11References
20Claims
0Family size
Assignee
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Key dates
| Filing date | Dec 20, 2019 |
| Grant date | Feb 15, 2022 |
| Priority date | — |
| Expiry date | Aug 16, 2040 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L9/0894
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
A processor comprising a first register to store a wrapping key, a second register to store a pointer to a handle stored in a memory coupled to the processor, the handle comprising a cryptographic key encrypted using the wrapping key, and a core to execute a decryption instruction. The core is to, responsive to the decryption instruction, identify, in the decryption instruction, a pointer to ciphertext stored in the memory, retrieve the ciphertext and the handle from the memory, decrypt the cryptographic key of the handle based on the wrapping key, and decrypt the ciphertext based on the decrypted cryptographic key.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.