H04L 9/0625
With splitting of the data block into left and right halves
Official title: {with splitting of the data block into left and right halves, e.g. Feistel based algorithms, DES, FEAL, IDEA or KASUMI}
H04L9/0625 (With splitting of the data block into left and right halves) appears on 601 US grants and 536 published applications in this corpus.
Search patents in H04L- Granted patents
- 601
- Published applications
- 536
- Assignees
- 260
- Inventors
- 922
- Latest grant
- 11 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 | 3 | 0 |
| 1982 | 2 | 0 |
| 1983 | 2 | 0 |
| 1984 | 0 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 2 | 0 |
| 1988 | 1 | 0 |
| 1989 | 4 | 0 |
| 1990 | 2 | 0 |
| 1991 | 7 | 0 |
| 1992 | 2 | 0 |
| 1993 | 7 | 0 |
| 1994 | 5 | 0 |
| 1995 | 5 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 13 | 0 |
| 1999 | 5 | 0 |
| 2000 | 6 | 0 |
| 2001 | 22 | 10 |
| 2002 | 7 | 29 |
| 2003 | 9 | 21 |
| 2004 | 14 | 26 |
| 2005 | 12 | 27 |
| 2006 | 22 | 24 |
| 2007 | 13 | 13 |
| 2008 | 19 | 17 |
| 2009 | 18 | 17 |
| 2010 | 29 | 38 |
| 2011 | 21 | 21 |
| 2012 | 26 | 17 |
| 2013 | 30 | 15 |
| 2014 | 22 | 14 |
| 2015 | 15 | 16 |
| 2016 | 23 | 17 |
| 2017 | 21 | 40 |
| 2018 | 23 | 24 |
| 2019 | 31 | 22 |
| 2020 | 34 | 48 |
| 2021 | 18 | 21 |
| 2022 | 22 | 19 |
| 2023 | 29 | 19 |
| 2024 | 19 | 6 |
| 2025 | 16 | 12 |
| 2026 | 6 | 3 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Techniques and devices for configurable memory encryption and authentication11 Aug 2026US 12,705,186 B2Cryptography Research, Inc.
- Systems and methods for establishing shared trust between a primary client user and recipient agent user14 Jul 2026US 12,683,794 B2Wells Fargo Bank, N. A.
- Systems and methods for cryptographic authentication of contactless cards2 Jun 2026US 12,647,271 B2Capital One Services, LLC
- Data protection using portable data structures10 Mar 2026US 12,574,209 B2International Business Machines Corporation
- Privacy-preserving computation method and system for secure three-party linear regression17 Feb 2026US 12,556,366 B2Beihang University
- Interactions between a client device and an authentication server providing security and privacy to stored passphrases11 Jun 2026US 2026/0163726 A1
- Secure packet transmission method and related apparatus14 May 2026US 2026/0135888 A1Huawei Technologies Co., Ltd.
- Systems and methods of key selection for cryptographic authentication of contactless cards2 Apr 2026US 2026/0095322 A1Capital One Services, LLC
- Selectivity in privacy and verification with applications21 Aug 2025US 2025/0267152 A1
- Method for encrypting data in an electronic system and corresponding system14 Aug 2025US 2025/0260556 A1STMicroelectronics International N. V.
Most cited
By later US patents
- System and method for secure and reliable multi-cloud data replication579US 8,762,642 B2Twinstrata, Inc · 2014
- 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
- Methods for identifying malicious software303US 7,644,441 B2Cigital · 2010
- System for protecting sensitive data with distributed tokenization273US 8,595,850 B2Voltage Security, Inc. · 2013