Inventor · disambiguated record
Stephen M. Matyas
Also filed as: MATYAS J STEPHEN M · MATYAS JR STEPHEN M · MATYAS JR STEPHEN MICHAEL · MATYAS STEPHEN
94 granted patents·2 pending applications·15,691 citations·filing 1977–2007
99Inventor score
Top patents by PatentIndex Score
96 records- 0199US6947556B1Secure data storage and retrieval with key management and user authenticationIBM·Filed 2000·Granted Sep 20, 2005·426 cites·66 claims
- 0299US5414833ANetwork security system and method using a parallel finite state machine adaptive active monitor and responderIBM·Filed 1993·Granted May 9, 1995·936 cites·45 claims
- 0398US7010689B1Secure data storage and retrieval in a client-server environmentIBM·Filed 2000·Granted Mar 7, 2006·285 cites·9 claims
- 0498US5745678AMethod and system for the secured distribution of multimedia titlesIBM·Filed 1997·Granted Apr 28, 1998·513 cites·38 claims
- 0598US5592553AAuthentication system using one-time passwordsIBM·Filed 1996·Granted Jan 7, 1997·565 cites·31 claims
- 0697US5937066ATwo-phase cryptographic key recovery systemIBM·Filed 1996·Granted Aug 10, 1999·464 cites·54 claims
- 0797US5912974AApparatus and method for authentication of printed documentsIBM·Filed 1997·Granted Jun 15, 1999·334 cites·60 claims
- 0897US4757534ACode protection using cryptographyIBM·Filed 1987·Granted Jul 12, 1988·450 cites·10 claims
- 0997US4238853ACryptographic communication security for single domain networksIBM·Filed 1977·Granted Dec 9, 1980·194 cites·49 claims
- 1097US4238854ACryptographic file security for single domain networksIBM·Filed 1977·Granted Dec 9, 1980·237 cites·42 claims
- 1197US4218738AMethod for authenticating the identity of a user of an information systemIBM·Filed 1978·Granted Aug 19, 1980·241 cites·24 claims
- 1297US4203166ACryptographic file security for multiple domain networksIBM·Filed 1977·Granted May 13, 1980·264 cites·43 claims
- 1397US4193131ACryptographic verification of operational keys used in communication networksIBM·Filed 1977·Granted Mar 11, 1980·176 cites·11 claims
- 1496USRE38375EMethod and system for the secured distribution of multimedia titlesIBM·Filed 2000·Granted Dec 30, 2003·134 cites·38 claims
- 1596US5319705AMethod and system for multimedia access control enablementIBM·Filed 1992·Granted Jun 7, 1994·1.2k cites·21 claims
- 1696US4227253ACryptographic communication security for multiple domain networksIBM·Filed 1977·Granted Oct 7, 1980·183 cites·47 claims
- 1795US6697947B1Biometric based multi-party authenticationIBM·Filed 1999·Granted Feb 24, 2004·357 cites·27 claims
- 1895US4500750ACryptographic application for interbank verificationIBM·Filed 1981·Granted Feb 19, 1985·110 cites·25 claims
- 1995US4393269AMethod and apparatus incorporating a one-way sequence for transaction and identity verificationIBM·Filed 1981·Granted Jul 12, 1983·170 cites·24 claims
- 2094US5265164ACryptographic facility environment backup/restore and replication in a public key cryptosystemIBM·Filed 1991·Granted Nov 23, 1993·294 cites·26 claims
- 2194US5200999APublic key cryptosystem key management based on control vectorsIBM·Filed 1991·Granted Apr 6, 1993·296 cites·33 claims
- 2294US5201000AMethod for generating public and private key pairs without using a passphraseIBM·Filed 1991·Granted Apr 6, 1993·289 cites·39 claims
- 2394US5164988AMethod to establish and enforce a network cryptographic security policy in a public key cryptosystemIBM·Filed 1991·Granted Nov 17, 1992·295 cites·24 claims
- 2494US5142578AHybrid public key algorithm/data encryption algorithm key distribution method based on control vectorsIBM·Filed 1991·Granted Aug 25, 1992·306 cites·25 claims
- 2594US4941176ASecure management of keys using control vectorsIBM·Filed 1988·Granted Jul 10, 1990·197 cites·67 claims
- 2694US4850017AControlled use of cryptographic keys via generating station established control valuesIBM·Filed 1987·Granted Jul 18, 1989·194 cites·22 claims
- 2793US7051211B1Secure software distribution and installationIBM·Filed 2000·Granted May 23, 2006·96 cites·39 claims
- 2893US6243812B1Authentication for secure devices with limited cryptographyIBM·Filed 2000·Granted Jun 5, 2001·79 cites·3 claims
- 2993US5604801APublic key data communications system under control of a portable security deviceIBM·Filed 1995·Granted Feb 18, 1997·483 cites·11 claims
- 3093US5301231AUser defined function facilityIBM·Filed 1992·Granted Apr 5, 1994·301 cites·43 claims
- 3193US4918728AData cryptography operations using control vectorsIBM·Filed 1989·Granted Apr 17, 1990·162 cites·43 claims
- 3293US4649233AMethod for establishing user authenication with composite session keys among cryptographically communicating nodesIBM·Filed 1985·Granted Mar 10, 1987·204 cites·16 claims
- 3392US5432849ASecure cryptographic operations using control vectors generated inside a cryptographic facilityIBM·Filed 1993·Granted Jul 11, 1995·179 cites·14 claims
- 3492US4386234ACryptographic communication and file security using terminalsIBM·Filed 1977·Granted May 31, 1983·84 cites·46 claims
- 3591US6687375B1Generating user-dependent keys and random numbersIBM·Filed 1999·Granted Feb 3, 2004·225 cites·31 claims
- 3691US5661807AAuthentication system using one-time passwordsIBM·Filed 1995·Granted Aug 26, 1997·223 cites·14 claims
- 3790US4908861AData authentication using modification detection codes based on a public one way encryption functionIBM·Filed 1987·Granted Mar 13, 1990·148 cites·21 claims
- 3890US4661658AOffline PIN validation with DESIBM·Filed 1985·Granted Apr 28, 1987·117 cites·8 claims
- 3989US6507912B1Protection of biometric data via key-dependent samplingIBM·Filed 1999·Granted Jan 14, 2003·186 cites·45 claims
- 4089US5953420AMethod and apparatus for establishing an authenticated shared secret value between a pair of usersIBM·Filed 1996·Granted Sep 14, 1999·202 cites·24 claims
- 4188US5907618AMethod and apparatus for verifiably providing key recovery information in a cryptographic systemIBM·Filed 1997·Granted May 25, 1999·191 cites·59 claims
- 4288US4771461AInitialization of cryptographic variables in an EFT/POS network with a large number of terminalsIBM·Filed 1986·Granted Sep 13, 1988·96 cites·15 claims
- 4387US4206315ADigital signature system and apparatusIBM·Filed 1978·Granted Jun 3, 1980·54 cites·6 claims
- 4486US5796830AInteroperable cryptographic key recovery systemIBM·Filed 1996·Granted Aug 18, 1998·139 cites·32 claims
- 4586US4736423ATechnique for reducing RSA Crypto variable storageIBM·Filed 1986·Granted Apr 5, 1988·84 cites·12 claims
- 4685US4924515ASecure management of keys using extended control vectorsINT BUSINESS MACHINES COPRPORA·Filed 1989·Granted May 8, 1990·93 cites·41 claims
- 4785US4755940ATransaction security systemIBM·Filed 1987·Granted Jul 5, 1988·309 cites·6 claims
- 4884US6363154B1Decentralized systems methods and computer program products for sending secure messages among a group of nodesIBM·Filed 1998·Granted Mar 26, 2002·137 cites·21 claims
- 4984US6058188AMethod and apparatus for interoperable validation of key recovery information in a cryptographic systemIBM·Filed 1997·Granted May 2, 2000·168 cites·22 claims
- 5084US6052469AInteroperable cryptographic key recovery system with verification by comparisonIBM·Filed 1998·Granted Apr 18, 2000·125 cites·20 claims
Showing the top 50 of 96 patent records by PatentIndex Score.
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