Method and system to retrieve public keys in a memory constrained system
US-2024283644-A1 · Aug 22, 2024 · US
the keys or algorithms being changed during operation
the keys or algorithms being changed during operation · Cooperative Patent Classification (CPC)
Electric circuits, power, telecommunications, and semiconductors.
Related technology areas
Mapped technology topics for this CPC code.
| Metric | Value |
|---|---|
| CPC code | H04L9/16 |
| Official title | the keys or algorithms being changed during operation |
| Display label | the keys or algorithms being changed during operation |
| Total patents | 814 |
Filing trend
Year-over-year patent counts classified under this CPC code.
Filing activity over the last five years is declining.
| Year | Patents |
|---|---|
| 2015 | 41 |
| 2016 | 53 |
| 2017 | 51 |
| 2018 | 59 |
| 2019 | 88 |
| 2020 | 85 |
| 2021 | 88 |
| 2022 | 92 |
| 2023 | 94 |
| 2024 | 84 |
| 2025 | 63 |
| 2026 | 16 |
Representative patents
Representative publications under this CPC code from precomputed stats, or recent filings when stats are unavailable.
Content protection
US-2024267575-A1 · Aug 8, 2024 · US
System and methods directed to side-channel power resistance for encryption algorithms using dynamic partial reconfiguration
US-2024089079-A1 · Mar 14, 2024 · US
Pad encoding and decoding
US-2016365872-A1 · Dec 15, 2016 · US
Communication device, communication method, and computer program product
US-9509510-B2 · Nov 29, 2016 · US
Method for encryption obfuscation
US-2016267815-A1 · Sep 15, 2016 · US
Rfid authentication architecture and methods for rfid authentication
US-2016261591-A1 · Sep 8, 2016 · US
Perturb key technique
US-2016248583-A1 · Aug 25, 2016 · US
Scrambling an address and encrypting write data for storing in a storage device
US-9397834-B2 · Jul 19, 2016 · US
Homomorphic Evaluation Including Key Switching, Modulus Switching, And Dynamic Noise Management
US-2016164670-A1 · Jun 9, 2016 · US
Media streaming with high rate availability
US-9357432-B2 · May 31, 2016 · US
Content transmission device and content transmission method, content reception device and content reception method, computer program, and content transmission system
US-2016149868-A1 · May 26, 2016 · US
System and method for rotating client security keys
US-2016105283-A1 · Apr 14, 2016 · US
Systems and methods for secure handling of data
US-9306737-B2 · Apr 5, 2016 · US
Homomorphic evaluation including key switching, modulus switching, and dynamic noise management
US-9281941-B2 · Mar 8, 2016 · US
Address-dependent key generation with a substitution-permutation network
US-2016062920-A1 · Mar 3, 2016 · US
Secure communication using physical proximity
US-2016044008-A1 · Feb 11, 2016 · US
Encryption device, encryption method, and encryption program
US-9237008-B2 · Jan 12, 2016 · US
RFID authentication architecture and methods for RFID authentication
US-9231947-B2 · Jan 5, 2016 · US
Private and distributed computation of probability density functions
US-2015372808-A1 · Dec 24, 2015 · US
Frequently asked questions
Answers are generated from the same data shown on this page.
- What is CPC H04L9/16?
- CPC H04L9/16 is the Cooperative Patent Classification code for “the keys or algorithms being changed during operation.”
- How many patents are filed under CPC H04L9/16 (the keys or algorithms being changed during operation)?
- Our database includes 814 publications tagged with this CPC code.
- Is patent activity under CPC H04L9/16 growing?
- Publication counts under this code: 84 in 2024 vs 63 in 2025 (latest complete years).