Efficient cryptographic hash functions and methods for amplifying the security of hash functions and pseudo-random functions
Patent 5608801 Issued on March 4, 1997. Estimated Expiration Date: 
November 16, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.
November 16, 2015. Estimated Expiration Date is calculated based on simple USPTO term provisions. It does not account for terminal disclaimers, term adjustments, failure to pay maintenance fees, or other factors which might affect the term of a patent.Patent ReferencesGenerator for generating binary ciphering sequences Pseudo-random sequence generator Public key/signature cryptosystem with enhanced digital signature certification High speed word generator Large provably fast and secure digital signature schemes based on secure hash functions Patent #: 5432852 InventorsAssigneeApplicationNo. 559213 filed on 11/16/1995US Classes:380/46, Nonlinear (e.g., pseudorandom)331/78, ELECTRICAL NOISE OR RANDOM WAVE GENERATOR380/28, PARTICULAR ALGORITHMIC FUNCTION ENCODING380/29, NBS/DES algorithm380/30, Public key380/44, Having particular key generator380/47, Plural generators708/250, Random number generation713/176, Authentication by digital signature representation or digital watermark713/187, COMPUTER PROGRAM MODIFICATION DETECTION BY CRYPTOGRAPHY713/188COMPUTER VIRUS DETECTION BY CRYPTOGRAPHYExaminersPrimary: Gregory, Bernarr E.Attorney, Agent or FirmInternational ClassesH04L 009/00G06F 001/02 H03B 029/00 AbstractMethods and circuitry for generating a cryptographic hash function using a strong pseudo-random generator along with the input data to create high quality pseudo-random keys as indices to pseudo-random functions, as well as a pseudo-random function from 2n bits to 2n bits given a pseudo-random function from n bits to n bits.Other References
| |
