Abstract: A system for authentication of a client includes logic supporting a “what user knows” algorithm for authentication of a client, such as a random partial pattern recognition algorithm, based upon client credentials including an account user name and an account authentication code. Logic supporting client account administration is operable without human intervention on the server side, and includes at least one mode of operation that presents an interface to a client via the data network having at least two tiers of security based on input by the client of secret information shared only between the client and the server. A first tier in said at least two tiers requires entry of one of the account user name and user's email address, and a second tier in the at least two tiers requires entry of one of client profile data sufficient to identify the client and at least a subset of said account authentication code.

Abstract: An interactive mutual authentication protocol, which does not allow shared secrets to pass through untrusted communication media, integrates an encryption key management system into the authentication protocol, so that key management becomes an essential part of the authentication protocol itself. The system provides a secure distribution of a secret session random key used in symmetric cryptography. Successful exchange of this encryption key allows for secure transit of the protocol data over communication lines in encrypted form, permitting explicit mutual authentication of the connected parties. The post-authentication stage of the communication session can use secure encryption for the data exchange, since each party has already obtained the secret session random key.

Abstract: A clocked authentication, authorization and accounting (CAAA) system and method offers private and secure credit/debit card online and offline financial transactions (FT) including an embedded privacy and security layer (EPSL) architecture. EPSL includes an authentication stage prior to the authorization stage that is automated and enabled through a back office, and enhanced by associating the authentication stage with projected timing, security and accounting parameters. It enables legal financial account holders to perform buy/sell or withdraw/deposit transactions without disclosing private personal information to the transaction counterparts, while preserving highly elevated and enhanced security and fraud protection as compared with conventional methods. The CAAA method enables efficient mass user EPSL implementation at back offices utilizing high frequency synchronized global clocking of EPSL logic blocks.

Abstract: Random partial shared secret recognition is combined with using more than one communication channel between server-side resources and two logical or physical client-side data processing machines. After a first security tier, a first communication channel is opened to a first data processing machine on the client side. The session proceeds by delivering an authentication challenge, identifying a random subset of an authentication credential, to a second data processing machine on the client side using a second communication channel. Next, the user enters an authentication response in the first data processing machine, based on a random subset of the authentication credential. The authentication response is returned to the server side on the first communication channel for matching. The authentication credential can be a one-session-only credential delivered to the user for one session, or a static credential used many times.

Abstract: An interactive method for authentication is based on two shared secrets, including a first shared secret in the form of an ordered path on the frame of reference, and a second shared secret in the form of locations on the frame of reference at which characters identifying a subset of the ordered path are to be displayed. An instance of the frame of reference comprises a set of characters which is arranged in a random or other irregular pattern. Authentication requires that a user enter the characters in the displayed instance of the frame of reference found in the locations in the random subset of the ordered path by indicating characters either in these locations, or any other locations having the same characters. Thus, a secret challenge identifying the random partial subset is embedded within the displayed instance of the graphical representation of the frame of reference.

Abstract: An interactive mutual authentication protocol, which does not allow shared secrets to pass through untrusted communication media, integrates an encryption key management system into the authentication protocol. The server encrypts a particular data random key by first veiling the particular data random key using a first conversion array seeded by a shared secret, and then encrypting the veiled particular data random key. The client decrypts and unveils the particular data random key using the shared secret, and returns a similarly veiled version of the particular data random key using a second conversion array seeded by a shared secret. Access to the shared secret indicates authenticity of the stations. The procedure may be repeated for a second shared secret for strong authentication, without allowing shared secrets to pass via untrusted media.

Abstract: A graphical user interface supports an interactive client-server authentication based on Random Partial Pattern Recognition algorithm (RPPR). In RPPR, an ordered set of data fields is stored for a client to be authenticated in secure memory on the server side. A graphical user interface presents a clue generated at the server to the client, such positions in the ordered set of a random subset of data fields from the ordered set. The client enters input data in multiple fields of the interface according to the clue, and the server accepts the input data from the client. The input data includes storage units representing alpha-numeric characters, images and colors corresponding to the field contents for the data fields. The interface includes indicators for elapsed time and status of the authentication session.

Abstract: An authentication server provides a clue to a client indicating a random partial subset of a full pattern that characterizes a full digitized path on a frame of reference, and the client enters a data to fulfill an authentication factor suggested by the clue. The full pattern consists of an ordered set of data fields, which store parameters that specify the full digitized path on a reference grid for recognition. The server presents an instance of a graphical representation of the frame of reference, including an array of random indicators at data field coordinates in the frame of reference. The server accepts indicators from the array of indicators corresponding to coordinates along said digitized path identified by the random partial subset as input data to fulfill the authentication factor.

Abstract: An authentication server provides a clue to a client indicating a random partial subset of a full pattern that characterizes a full digitized path on a frame of reference, and the client enters a data to fulfill an authentication factor suggested by the clue. The full pattern consists of an ordered set of data fields, which store parameters that specify the full digitized path on a reference grid for recognition. The server presents an instance of a graphical representation of the frame of reference, including an array of random indicators at data field coordinates in the frame of reference. The server accepts indicators from the array of indicators corresponding to coordinates along said digitized path identified by the random partial subset as input data to fulfill the authentication factor.

Abstract: A system for authentication of a client includes logic supporting combinations of more than one a “what user knows” authentication factors for strong authentication of a client, such as a static password, random partial pattern recognition factor and a random partial digitized path recognition factor. An interactive method for authentication of a client in a network environment utilizes two or more “what user knows” authentication factors. The two or more “what user knows” authentication factors are algorithmically and parametrically independent. The client is prompted to provide a server the first “what user knows” authentication factor over a communication medium. The server verifies the first “what user knows” authentication factor. If successful, then the client is prompted to provide the server the second “what user knows” authentication factor.

Abstract: A system for authentication of a client includes logic supporting a “what user knows” algorithm for authentication of a client, such as a random partial pattern recognition algorithm, based upon client credentials including an account user name and an account authentication code. Logic supporting client account administration is operable without human intervention on the server side, and includes at least one mode of operation that presents an interface to a client via the data network having at least two tiers of security based on input by the client of secret information shared only between the client and the server. A first tier in said at least two tiers requires entry of one of the account user name and user's email address, and a second tier in the at least two tiers requires entry of one of client profile data sufficient to identify the client and at least a subset of said account authentication code.

Abstract: A graphical user interface supports an interactive client-server authentication based on Random Partial Pattern Recognition algorithm (RPPR). In RPPR, an ordered set of data fields is stored for a client to be authenticated in secure memory on the server side. A graphical user interface presents a clue generated at the server to the client, such positions in the ordered set of a random subset of data fields from the ordered set. The client enters input data in multiple fields of the interface according to the clue, and the server accepts the input data from the client. The input data includes storage units representing alpha-numeric characters, images and colors corresponding to the field contents for the data fields. The interface includes indicators for elapsed time and status of the authentication session.

Abstract: An interactive client-server authentication system and method are based on Random Partial Pattern Recognition algorithm (RPPR). In RPPR, an ordered set of data fields is stored for a client to be authenticated in secure memory. An authentication server presents a clue to the client via a communication medium, such positions in the ordered set of a random subset of data fields from the ordered set. The client enters input data in multiple fields according to the clue, and the server accepts the input data from the client via a data communication medium. The input data corresponds to the field contents for the data fields at the identified positions of the random subset of data fields. The server then determines whether the input data matches the field contents of corresponding data fields in a random subset.