Thomas A. Crispin
36Patents
10h-index
5Co-inventors
64Inventor score
Filing activity: Feb 11, 2003 → Oct 15, 2015
Most-cited inventions
| Patent | Title | Area | Cited by | Status |
|---|---|---|---|---|
| US7532722B2 | Apparatus and method for performing transparent block cipher cryptographic functions | Electricity | 31 | Expired |
| US7539876B2 | Apparatus and method for generating a cryptographic key schedule in a microprocessor | Electricity | 29 | Active |
| US7502943B2 | Microprocessor apparatus and method for providing configurable cryptographic block cipher round results | Electricity | 29 | Active |
| US7321910B2 | Microprocessor apparatus and method for performing block cipher cryptographic functions | Electricity | 24 | Expired |
| US7844053B2 | Microprocessor apparatus and method for performing block cipher cryptographic functions | Electricity | 20 | Active |
| US8255703B2 | Atomic hash instruction | Electricity | 17 | Active |
| US7900055B2 | Microprocessor apparatus and method for employing configurable block cipher cryptographic algorithms | Electricity | 17 | Active |
| US7536560B2 | Microprocessor apparatus and method for providing configurable cryptographic key size | Electricity | 16 | Active |
| US7529368B2 | Apparatus and method for performing transparent output feedback mode cryptographic functions | Electricity | 14 | Active |
| US7921300B2 | Apparatus and method for secure hash algorithm | Electricity | 10 | Active |
| US7392400B2 | Microprocessor apparatus and method for optimizing block cipher cryptographic functions | Electricity | 8 | Expired |
| US9967092B2 | Key expansion logic using decryption key primitives | Electricity | 7 | Active |
| US7925891B2 | Apparatus and method for employing cryptographic functions to generate a message digest | Electricity | 7 | Active |
| US7664810B2 | Microprocessor apparatus and method for modular exponentiation | Physics | 5 | Active |
| US9798898B2 | Microprocessor with secure execution mode and store key instructions | Electricity | 4 | Active |
| US9911008B2 | Microprocessor with on-the-fly switching of decryption keys | Electricity | 4 | Active |
| US7542566B2 | Apparatus and method for performing transparent cipher block chaining mode cryptographic functions | Electricity | 3 | Active |
| US7139785B2 | Apparatus and method for reducing sequential bit correlation in a random number generator | Physics | 3 | Expired |
| US9892283B2 | Decryption of encrypted instructions using keys selected on basis of instruction fetch address | Electricity | 3 | Active |
| US7519833B2 | Microprocessor apparatus and method for enabling configurable data block size in a cryptographic engine | Electricity | 3 | Expired |
| US8060755B2 | Apparatus and method for providing user-generated key schedule in a microprocessor cryptographic engine | Electricity | 3 | Active |
| US8296345B2 | Microprocessor with selectively available random number generator based on self-test result | Physics | 2 | Active |
| US8719589B2 | Microprocessor that facilitates task switching between multiple encrypted programs having different associated decryption key values | Electricity | 2 | Active |
| US7529367B2 | Apparatus and method for performing transparent cipher feedback mode cryptographic functions | Electricity | 2 | Active |
| US7165084B2 | Microprocessor with selectivity available random number generator based on self-test result | Physics | 2 | Expired |
Source: USPTO / EPO open patent data. Inventor disambiguation is heuristic; counts are objective bibliographic measures.