Methods and apparatus for synchronizing decryption state with remote encryption state
US9900291B2 · kind B2 · utility
2Cited by
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20Claims
0Family size
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Key dates
| Filing date | May 30, 2017 |
| Grant date | Feb 20, 2018 |
| Priority date | — |
| Expiry date | May 30, 2037 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04L65/70
- WIPO fieldDigital communication
- WIPO sectorElectrical engineering
Abstract
Methods and apparatus for supporting secure packet communications, e.g., SRTP, which use implicit index numbers for synchronization and sequencing of received packets. The secure communications methods and apparatus having an adaptive index learning mode of operation and a non-adaptive index learning mode of operation. The adaptive index learning mode of operation being used to determine a correct estimated sequence number roll over counter number and the implicit index number for one of a plurality of secure packets received when an adaptive index learning process condition is satisfied.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.