Inventor · disambiguated record
Donald B. Johnson
Also filed as: JOHNSON DONALD · JOHNSON DONALD B · JOHNSON DONALD BYRON
64 granted patents·3 pending applications·7,892 citations·filing 1977–2014
99Inventor score
Top patents by PatentIndex Score
67 records- 0199US5414833ANetwork 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
- 0298US5592553AAuthentication system using one-time passwordsIBM·Filed 1996·Granted Jan 7, 1997·565 cites·31 claims
- 0397US5937066ATwo-phase cryptographic key recovery systemIBM·Filed 1996·Granted Aug 10, 1999·464 cites·54 claims
- 0496US5319705AMethod and system for multimedia access control enablementIBM·Filed 1992·Granted Jun 7, 1994·1.2k cites·21 claims
- 0594US5265164ACryptographic facility environment backup/restore and replication in a public key cryptosystemIBM·Filed 1991·Granted Nov 23, 1993·294 cites·26 claims
- 0694US5200999APublic key cryptosystem key management based on control vectorsIBM·Filed 1991·Granted Apr 6, 1993·296 cites·33 claims
- 0794US5201000AMethod for generating public and private key pairs without using a passphraseIBM·Filed 1991·Granted Apr 6, 1993·289 cites·39 claims
- 0894US5164988AMethod to establish and enforce a network cryptographic security policy in a public key cryptosystemIBM·Filed 1991·Granted Nov 17, 1992·295 cites·24 claims
- 0994US5142578AHybrid public key algorithm/data encryption algorithm key distribution method based on control vectorsIBM·Filed 1991·Granted Aug 25, 1992·306 cites·25 claims
- 1094US4941176ASecure management of keys using control vectorsIBM·Filed 1988·Granted Jul 10, 1990·197 cites·67 claims
- 1193US5301231AUser defined function facilityIBM·Filed 1992·Granted Apr 5, 1994·301 cites·43 claims
- 1293US4918728AData cryptography operations using control vectorsIBM·Filed 1989·Granted Apr 17, 1990·162 cites·43 claims
- 1392US5432849ASecure cryptographic operations using control vectors generated inside a cryptographic facilityIBM·Filed 1993·Granted Jul 11, 1995·179 cites·14 claims
- 1491US8233617B2Resilient cryptographic schemeJOHNSON DONALD B·Filed 2010·Granted Jul 31, 2012·12 cites·24 claims
- 1591US5661807AAuthentication system using one-time passwordsIBM·Filed 1995·Granted Aug 26, 1997·223 cites·14 claims
- 1689US5953420AMethod and apparatus for establishing an authenticated shared secret value between a pair of usersIBM·Filed 1996·Granted Sep 14, 1999·202 cites·24 claims
- 1786US5796830AInteroperable cryptographic key recovery systemIBM·Filed 1996·Granted Aug 18, 1998·139 cites·32 claims
- 1885US4924515ASecure management of keys using extended control vectorsINT BUSINESS MACHINES COPRPORA·Filed 1989·Granted May 8, 1990·93 cites·41 claims
- 1984US6052469AInteroperable cryptographic key recovery system with verification by comparisonIBM·Filed 1998·Granted Apr 18, 2000·125 cites·20 claims
- 2083US8116451B2Key validation schemeJOHNSON DONALD B·Filed 2007·Granted Feb 14, 2012·8 cites·31 claims
- 2183US5103478ASecure management of keys using control vectors with multi-path checkingIBM·Filed 1990·Granted Apr 7, 1992·75 cites·26 claims
- 2282US7036015B2Verification protocolCERTICOM CORP·Filed 2002·Granted Apr 25, 2006·30 cites·12 claims
- 2382US6446207B1Verification protocolCERTICOM CORP·Filed 1998·Granted Sep 3, 2002·110 cites·30 claims
- 2482US5623402AMulti-channel inverse control using adaptive finite impulse response filtersSCHENCK PEGASUS CORP·Filed 1994·Granted Apr 22, 1997·56 cites·50 claims
- 2581US7552329B2Masked digital signaturesCERTICOM CORP·Filed 2007·Granted Jun 23, 2009·5 cites·22 claims
- 2680US6078667AGenerating unique and unpredictable valuesCERTICOM CORP·Filed 1996·Granted Jun 20, 2000·114 cites·14 claims
- 2780US4924514APersonal identification number processing using control vectorsIBM·Filed 1989·Granted May 8, 1990·67 cites·51 claims
- 2878US7996676B2Masked digital signaturesCERTICOM CORP·Filed 2009·Granted Aug 9, 2011·3 cites·18 claims
- 2978US7260723B2Masked digital signaturesCERTICOM CORP·Filed 2001·Granted Aug 21, 2007·9 cites·10 claims
- 3078US5870470AMethod and apparatus for encrypting long blocks using a short-block encryption procedureIBM·Filed 1996·Granted Feb 9, 1999·88 cites·37 claims
- 3178US5323464ACommercial data maskingIBM·Filed 1992·Granted Jun 21, 1994·98 cites·20 claims
- 3276US6487660B1Two way authentication protocolCERTICOM CORP·Filed 1999·Granted Nov 26, 2002·90 cites·17 claims
- 3376US6195433B1Private key validity and validationCERTICOM CORP·Filed 1998·Granted Feb 27, 2001·94 cites·10 claims
- 3475US5815573ACryptographic key recovery systemIBM·Filed 1996·Granted Sep 29, 1998·89 cites·27 claims
- 3575US4993069ASecure key management using control vector translationIBM·Filed 1989·Granted Feb 12, 1991·46 cites·19 claims
- 3674US8983064B2Strengthened public key protocolVANSTONE SCOTT A·Filed 2012·Granted Mar 17, 2015·2 cites·15 claims
- 3773US8594324B2Key validation schemeJOHNSON DONALD B·Filed 2011·Granted Nov 26, 2013·2 cites·23 claims
- 3872US6424712B2Accelerated signature verification on an elliptic curveCERTICOM CORP·Filed 1997·Granted Jul 23, 2002·41 cites·16 claims
- 3972US5007089ASecure key management using programable control vector checkingIBM·Filed 1990·Granted Apr 9, 1991·63 cites·16 claims
- 4070US7567669B2Strengthened public key protocolCERTICOM CORP·Filed 2002·Granted Jul 28, 2009·10 cites·29 claims
- 4170US4124894AApparatus and method for reporting detected error in a cardiac signalHYCEL INC·Filed 1977·Granted Nov 7, 1978·54 cites·6 claims
- 4268US8732467B2Masked digital signaturesCERTICOM CORP·Filed 2012·Granted May 20, 2014·0 cites·20 claims
- 4367US5768390ACryptographic system with maskingIBM·Filed 1997·Granted Jun 16, 1998·60 cites·25 claims
- 4466US7215773B1Key validation schemeCERTICOM CORP·Filed 1998·Granted May 8, 2007·40 cites·10 claims
- 4566US6336188B2Authenticated key agreement protocolCERTICOM CORP·Filed 1998·Granted Jan 1, 2002·60 cites·1 claims
- 4666US5214698AMethod and apparatus for validating entry of cryptographic keysIBM·Filed 1991·Granted May 25, 1993·50 cites·23 claims
- 4763US8359468B2Masked digital signaturesCERTICOM CORP·Filed 2011·Granted Jan 22, 2013·0 cites·19 claims
- 4863US5073934AMethod and apparatus for controlling the use of a public key, based on the level of import integrity for the keyIBM·Filed 1990·Granted Dec 17, 1991·44 cites·30 claims
- 4960US7797539B2Resilient cryptographic schemeCERTICOM CORP·Filed 2001·Granted Sep 14, 2010·4 cites·19 claims
- 5060US6301362B1Method and apparatus for cryptographically transforming an input block into an output blockIBM·Filed 1998·Granted Oct 9, 2001·45 cites·16 claims
Showing the top 50 of 67 patent records by PatentIndex Score.
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