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| Digital subscriber loop access circuit for digital switch and packet network interconnections |
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| Egress network service monitor |
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| Network traffic controller |
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| Tool for monitoring health of networks |
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Access control/crypto system
| Details |
Inventors: Mooney, David M.; Kimlinger, Paul J.; Bradley, James Virgil;
Assignee: Digital Privacy, Inc. (Minneapolis, MN)
Primary Examiner: Chung; Phung M.
Assistant Examiner: Callahan; Paul E.
Attorney, Agent or Firm: Fredrikson & Byron, P.A.
An access control/crypto system having a smart card reader and an access control program for requesting information from a user to determine if the user is authorized to access the computer. The access control/crypto system uses encryption and smart card technology as a means for securing files stored on the system, telecommunicated globally, or archived to a chosen media. The system includes an access hierarchy, combined with the issuance of smart cards, to control the various levels of access provided by the system. Further, the present system provides secure file transfer by encrypting sensitive files at a first site, transferring the encrypted version to a second site, providing an authorized user at the second site with a secret password, and decrypting the file at the second site using the secret password under control of the authorized user. |
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DETAILED DESCRIPTION An access control/crypto system having a smart card reader and an access control program for requesting information from a user to determine if the user is authorized to access the computer.
The access control/crypto system uses encryption and smart card technology as a means for securing files stored on the system, telecommunicated globally or archived to a chosen media.
The system includes an access hierarchy, combined with the issuance of smart cards, to control the various levels of access provided by the system.
An alternate embodiment of the present system provides secure file transfer by encrypting sensitive files at a first site, transferring the encrypted version to a second site, providing an authorized user at the second site with a secret password, and decrypting the file at the second site using the secret password under control of the authorized user.
This embodiment provides secure transfer of information regardless of the transfer means used.
In addition, the access hierarchy may be incorporated into this embodiment to provide varying levels of security for both the transmitter of information and the receiver of the information.
In one embodiment, the systems at both the first site and the second site are programmable to perform encryption or decryption, providing a secure bidirectional file transfer system which may optionally use any mode of communication available without risking loss or decryption of sensitive information.
In an alternate embodiment, a compression feature is incorporated prior to file encryption to compress the data file, so that the encrypted version of the file is transferred more easily to the second site.
The received file is decrypted and decompressed to provide the original file, provided the user at the second site has the appropriate secret password and the requisite access to the system via the smart card and card reader means.
Other embodiments are described which feature automatic file handling, so that unencrypted files are removed and erased from the system during the encryption process to ensure that the sensitive information is not accidentally left on the system and vulnerable to unauthorized persons
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