H04L 2209/24
Key scheduling, i.e. generating round keys or sub-keys for block encryption
H04L2209/24 (Key scheduling, i.e. generating round keys or sub-keys for block encryption) appears on 1,616 US grants and 1,675 published applications in this corpus.
Search patents in H04L- Granted patents
- 1,616
- Published applications
- 1,675
- Assignees
- 521
- Inventors
- 2,146
- Latest grant
- 25 Aug 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 2 | 0 |
| 1977 | 0 | 0 |
| 1978 | 0 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 1 | 0 |
| 1982 | 0 | 0 |
| 1983 | 0 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 0 | 0 |
| 1987 | 0 | 0 |
| 1988 | 1 | 0 |
| 1989 | 0 | 0 |
| 1990 | 0 | 0 |
| 1991 | 1 | 0 |
| 1992 | 0 | 0 |
| 1993 | 3 | 0 |
| 1994 | 1 | 0 |
| 1995 | 2 | 0 |
| 1996 | 2 | 0 |
| 1997 | 0 | 0 |
| 1998 | 7 | 0 |
| 1999 | 1 | 0 |
| 2000 | 4 | 0 |
| 2001 | 16 | 4 |
| 2002 | 0 | 33 |
| 2003 | 3 | 22 |
| 2004 | 5 | 20 |
| 2005 | 8 | 24 |
| 2006 | 16 | 25 |
| 2007 | 19 | 31 |
| 2008 | 15 | 26 |
| 2009 | 24 | 25 |
| 2010 | 25 | 46 |
| 2011 | 24 | 35 |
| 2012 | 40 | 46 |
| 2013 | 41 | 57 |
| 2014 | 92 | 127 |
| 2015 | 138 | 335 |
| 2016 | 195 | 283 |
| 2017 | 258 | 169 |
| 2018 | 195 | 111 |
| 2019 | 160 | 76 |
| 2020 | 108 | 57 |
| 2021 | 65 | 47 |
| 2022 | 42 | 20 |
| 2023 | 42 | 18 |
| 2024 | 34 | 21 |
| 2025 | 17 | 12 |
| 2026 | 9 | 5 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Authentication service and certificate exchange protocol in wireless ad hoc networks25 Aug 2026US 12,719,849 B2Airbus DS GmbH
- Integration of verification tokens with mobile communication devices28 Jul 2026US 12,694,390 B2Visa International Service Association
- Certificate-based pairing of key fob device and control unit14 Jul 2026US 12,683,765 B2Texas Instruments Incorporated
- Integration of verification tokens with mobile communication devices2 Jun 2026US 12,646,045 B2Visa International Service Association
- Multi-path communication of electronic device secure element data for online payments28 Apr 2026US 12,614,172 B2Apple Inc.
- Key derivation operation20 Aug 2026US 2026/0246626 A1STMicroelectronics International N. V.
- Encryptor and memory controller including the same7 May 2026US 2026/0128858 A1Samsung Electronics Co., Ltd.
- Id-based control unit-key fob pairing12 Mar 2026US 2026/0074891 A1Texas Instruments Incorporated
- Profile-based multi-array access for cloud-based storage systems29 Jan 2026US 2026/0032122 A1Pure Storage, Inc.
- Methods and systems for key generation22 Jan 2026US 2026/0025279 A1Comcast Cable Communications, LLC
Most cited
By later US patents
- Providing authorization and authentication in a cloud for a user of a storage array524US 9,300,660 B1Pure Storage, Inc. · 2016
- Storage array access control from cloud-based user authorization and authentication514US 9,444,822 B1Pure Storage, Inc. · 2016
- Cloud-based system for reading of decodable indicia497US 9,064,254 B2Honeywell International Inc. · 2015
- Product block cipher system for data security305US 3,962,539 AInternational Business Machines Corporation · 1976
- Enhanced block ciphers with data-dependent rotations304US 6,269,163 B1RSA Security Inc. · 2001