H04L 63/068
Using time-dependent keys
Official title: {using time-dependent keys, e.g. periodically changing keys (cryptographic mechanisms or cryptographic arrangements for controlling usage of secret information H04L9/088)}
H04L63/068 (Using time-dependent keys) appears on 1,232 US grants and 1,313 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,232
- Published applications
- 1,313
- Assignees
- 517
- Inventors
- 2,457
- Latest grant
- 6 Oct 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1985 | 1 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 0 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 0 | 0 |
| 1992 | 1 | 0 |
| 1993 | 0 | 0 |
| 1994 | 0 | 0 |
| 1995 | 1 | 0 |
| 1996 | 0 | 0 |
| 1997 | 0 | 0 |
| 1998 | 2 | 0 |
| 1999 | 3 | 0 |
| 2000 | 3 | 0 |
| 2001 | 1 | 4 |
| 2002 | 3 | 20 |
| 2003 | 8 | 19 |
| 2004 | 5 | 20 |
| 2005 | 8 | 40 |
| 2006 | 17 | 40 |
| 2007 | 17 | 55 |
| 2008 | 16 | 37 |
| 2009 | 19 | 31 |
| 2010 | 42 | 42 |
| 2011 | 37 | 41 |
| 2012 | 36 | 35 |
| 2013 | 55 | 47 |
| 2014 | 53 | 55 |
| 2015 | 73 | 56 |
| 2016 | 58 | 71 |
| 2017 | 59 | 88 |
| 2018 | 76 | 84 |
| 2019 | 84 | 106 |
| 2020 | 118 | 89 |
| 2021 | 89 | 85 |
| 2022 | 99 | 86 |
| 2023 | 79 | 65 |
| 2024 | 81 | 51 |
| 2025 | 59 | 29 |
| 2026 | 29 | 17 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
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- A method and apparatus for updating credential information in a wireless communication system27 Aug 2026US 2026/0255161 A1Samsung Electronics Co., Ltd.
- Secure element and method for mutually authenticating a secure element with a network entity30 Jul 2026US 2026/0222231 A1Giesecke+Devrient Mobile Security Germany GmbH
- Experience Differentiation30 Jul 2026US 2026/0222384 A1Comcast Cable Communications, LLC
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Most cited
By later US patents
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- Background auto-submit of login credentials383US 9,231,935 B1Google Inc. · 2016
- Rendering digital content in an encrypted rights-protected form357US 6,775,655 B1Microsoft Corporation · 2004
- Digital certificate support system, methods and techniques for secure electronic commerce transaction and rights management347US 7,133,846 B1Intertrust Technologies Corporation · 2006