US Patent No: 5,394,471

Number of patents in Portfolio can not be more than 2000

Method and system for proactive password validation

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Abstract

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An improved method for password validation comprising the steps of identifying bad passwords having one or more characters; computing a frequency of occurrence of bad password characters; computing a probability of occurrence T of the bad password characters within the bad passwords based upon the computed frequency of occurrence; identifying a proposed password having one or more characters; and comparing the proposed password characters with the probability of occurrence T of the bad password characters. The method further comprises the steps of establishing a validation threshold and validating the proposed password based upon the correspondence between (i) a value, BAp, reflecting the relationship between the probability of occurrence T of bad password characters within bad passwords and the proposed password characters and (ii) an established validation threshold. A Markov model is use to compute the probability of occurrence. The present invention also includes an improved password validation system.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
VERIZON PATENT AND LICENSING INC.BASKING RIDGE, NJ3564

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Davies, Christopher I Columbia, MD 1 39
Ganesan, Ravi Half Moon Bay, CA 133 2264

Cited Art Landscape

Patent Info (Count) # Cites Year
 
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4,926,475 Data encryption key failure monitor 19 1988
5,199,069 Automatic encryption selector 41 1991
 
Honeywell Inc. (1)
5,307,409 Apparatus and method for fault detection on redundant signal lines via encryption 37 1992
 
Syntellect Software Inc. (1)
4,974,191 Adaptive natural language computer interface system 202 1987

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
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HARRIS TECHNOLOGY, LLC (3)
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8,539,247 Password checking 0 2010
 
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GEMALTO SA (1)
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HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (1)
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ORACLE INTERNATIONAL CORPORATION (1)
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YAMATAKE CORPORATION (1)
7,367,053 Password strength checking method and apparatus and program and recording medium thereof, password creation assisting method and program thereof, and password creating method and program thereof 6 2003