Back-end matching method supporting front-end knowledge-based probabilistic authentication systems for enhanced credential security

a probabilistic authentication and back-end matching technology, applied in the field of computer security, can solve the problems of difficult brute force, if not impossible, of sharing secrets, and achieve the effect of being harder to brute for

Active Publication Date: 2015-11-26
AUTHERNATIVE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Once the split pieces are sent to different servers, if any one server is compromised, or any number of servers less than the max, then the shared secret should be very difficult, if not impossible to brute force.

Method used

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  • Back-end matching method supporting front-end knowledge-based probabilistic authentication systems for enhanced credential security
  • Back-end matching method supporting front-end knowledge-based probabilistic authentication systems for enhanced credential security
  • Back-end matching method supporting front-end knowledge-based probabilistic authentication systems for enhanced credential security

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Experimental program
Comparison scheme
Effect test

first embodiment

[0077]The first embodiment wherein the algorithm chosen is less complex will be detailed. The high level steps for a credential creation operation are as follows (also see FIG. 4):[0078]1. A user enters an identifier and the credential in the client.[0079]2. The client splits the credential into credential elements.[0080]3. The client encodes each credential element into a value M (M1, M2, . . . , Mn).[0081]4. The client randomly generates a value K.[0082]5. The client uses a one-way function to calculate KM for each value M (KM1, KM2, . . . , KMn).[0083]6. If not done so already (depends on the one-way function), the KM's should be hashed.[0084]7. The client encrypts K with the share server's public key, so that K becomes protected data.[0085]8. The client sends the user identifier, K and KM's to the primary server.[0086]9. The primary stores the user identifier and the KM's. The hashed KM's together constitute a representation of the credential characterized by the condition that ...

second embodiment

[0107]The second embodiment wherein the algorithm is more security conscious will be detailed. The high level steps for credential creation are as follows (also see FIG. 6):[0108]1. A user enters an identifier and the credential in the client.[0109]2. The client splits the credential into elements and encodes each one into a value M (M1, M2, . . . , Mn).[0110]3. The client randomly generates a value K.[0111]4. The client uses a one-way function to calculate KM for each value M (KM1, KM2, . . . , KMn) in the authentication credential.[0112]5. The client encrypts all the KM's with the share server's public key.[0113]6. The client sends the user identifier, K and encrypted KM's to the primary server, so that the KM's become protected data.[0114]7. The primary stores the user identifier and K.[0115]8. The primary server sends the encrypted KM's to the share server.[0116]9. The share server decrypts the KM's with its private key.[0117]10. The share server generates a random value S.[0118...

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Abstract

A party can authenticate itself by interacting with multiple servers without revealing the shared secret to any of the involved parties. The stored shared secret is strengthened and broken into shares and saved on the servers. The shared secret is safe against offline brute force attack unless all servers where the shares are stored are compromised. The compromise of any single server, or multiple servers—but less than the maximum number—will not allow the attacker to do a brute force analysis on the shared secret. This back end security enhancement is suitable for probabilistic front end authentication algorithms.

Description

RELATED APPLICATIONS[0001]The present application is related to co-pending U.S. patent application Ser. No. 13 / ______ entitled AUTHENTICATION METHOD OF FIELD CONTENTS BASED CHALLENGE AND ENUMERATED PATTERN OF FIELD POSITIONS BASED RESPONSE IN RANDOM PARTIAL DIGITIZED PATH RECOGNITION SYSTEM (AIDT 1014-1), and co-pending U.S. patent application Ser. No. 13 / ______ entitled AUTHENTICATION METHOD OF ENUMERATED PATTERN OF FIELD POSITIONS BASED CHALLENGE AND ENUMERATED PATTERN OF FIELD POSITIONS BASED RESPONSE THROUGH INTERACTION BETWEEN TWO CREDENTIALS IN RANDOM PARTIAL DIGITIZED PATH RECOGNITION SYSTEM (AIDT 1015-1), both of which are being filed on the same day as the present application, and have the same inventors, and both of which are incorporated by reference as if fully set forth herein.FIELD OF THE INVENTION[0002]The invention relates generally to computer security, and systems that store and authenticate user based credentials using multiple servers. One aspect of the invention...

Claims

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Application Information

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Patent Type & Authority Applications(United States)
IPC IPC(8): H04L29/06H04L9/32
CPCH04L63/0853H04L9/3226G06F21/36H04L9/085H04L9/3271H04L63/083
Inventor BARTON, EDWARD M.MIZRAH, LEN L.
Owner AUTHERNATIVE INC
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