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Assignee: Security Dynamics Technologies, Inc.


Location: Cambridge, MA
No. of patents: 7

NumberTitleIssue Date
5657388Method and apparatus for utilizing a token for resource access
A method and apparatus for utilizing a token which is preferably a "dumb token" to provide secure access by authorized users to a selected resource. The token stores a secret user code in machine readable form, which code is read by a token processor. The...
08/12/1997
5485519Enhanced security for a secure token code
A method and apparatus are provided for enhancing security for a private key or other multibit secure token code stored in a token by (a) assuring that the secure token code is not stored in the token except for short intervals when the token is actually ...
01/16/1996
5479512Method and apparatus for performing concryption
A method and apparatus for the integrated compression and encryption (concryption) of clear data and for the deconcryption of concrypted data to obtain the clear data for utilization. For concryption, the clear data and an encryption key are obtained, at ...
12/26/1995
5361062Personal security system
A method and apparatus are provided for verifying the identity of a system user. Each user has a token which processes an inputted seed to generate a stored value which is either a current seed value or a function thereof. This value is then changed to ge...
11/01/1994
5237614Integrated network security system
An integrated network security system is provided which permits log-on to a normally locked client on the network in response to at least one coded non-public input to the client by a user. At least a selected portion of the coded input is encrypted and s...
08/17/1993
5168520Method and apparatus for personal identification
A method and apparatus for providing improved security for a personal identification number (PIN) in a personal identification and verification system of the type wherein a time dependent nonpredictable code is generated at a device in the possession of t...
12/01/1992
4720860Method and apparatus for positively identifying an individual
An apparatus for the electronic generation and comparision of non-predictable codes. The appartus of the invention comprises a first mechanism for calculating a first non-predictable code according to a predetermined algorithm, the first mechanism for cal...
01/19/1988
 
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