Did You Know...
...that several people are credited with the invention of the flush toilet? Most people have heard of Thomas Crapper (1837-1910), the sanitary engineer who invented the valve-and-siphon arrangement that made the modern toilet possible. Another claimant to "the throne" was British inventor Alexander Cumming who patented a toilet in 1775. Then there's a nameless Minoan (a native of ancient Crete) who lived 4,000 years ago who supposedly was ahead of his time and created the first flush toilet!
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| Number | Title | Issue Date |
| 4924514 | Personal identification number processing using control vectors Cryptographic PIN processing is achieved in an improved manner by associating control vectors with the PIN generating (verification) keys and PIN encrypting keys which provide authorization for the uses of the keys intended by the originator of the keys. ... | 05/08/1990 |
| 4910775 | Portable electronic device for use in conjunction with a screen The portable electronic device (1) includes some optical reception devices (R), a microcomputer (4) suitable for processing the data received, a display device (6) to display data from the microcomputer (4), and an electrical energy source to supply the v... | 03/20/1990 |
| 4907272 | Method for authenticating an external authorizing datum by a portable object, such as a memory card The invention relates to a method for authenticating an external authorizing datum by a portable object, such as a memory card. The authorizing datum (C1) entered into an apparatus (2) is enciphered with a predetermined datum (E) to yield a message (M) which i... | 03/06/1990 |
| 4904851 | Identification authenticating system An identification authenticating system includes a first memory for storing a program to perform a preselected calculation on an input value to obtain an expected result. An input value is supplied to the program wherein calculation is performed thereon. ... | 02/27/1990 |
| 4890323 | Data communication systems and methods In order to improve the security of message transmission from a terminal apparatus in an electronic banking or other data communications system a check-sum or MAC is computed from the data within the message in dependence upon a cryptographic key. This MA... | 12/26/1989 |
| 4885788 | IC card An IC card having an authentication code which is compared with an authentication code obtained by processing data recorded on the IC card, and permitting the IC card to be used only when agreement is found.... | 12/05/1989 |
| 4882779 | Apparatus for communicating with data systems and a method of communicating with data systems An apparatus communicating with data systems, and a method of communicating with data systems. In an apparatus (10, 49) communicating with a high secrecy and high security on-line verification data system (40) and an off-line verification data system (18)... | 11/21/1989 |
| 4879747 | Method and system for personal identification The method and system of the invention utilizes a private key of a public-key cryptosystem key pair to encrypt a non-secret password into a digital signature. The password and the digital signature are then encoded and stored on a magnetic stripe or other... | 11/07/1989 |
| 4852165 | Secure system and method for providing personal identifier The invention pertains to apparatus and methods for securely transmitting a personal identifier between an originator thereof and a preselected data base. Especially, pertaining to a computer terminal and a method and acquiring a personal identifier used ... | 07/25/1989 |
| 4849613 | Method and device for making an electronic authentication Operating procedure and device for the electronically authorized determination of an individual matter and for obtaining, in a reliably differentiating manner which is secure against forgery, the remotely authorized, individual authentication of a transac... | 07/18/1989 |
| 4797920 | Electronic funds transfer system with means for verifying a personal identification number without pre-established secret keys An electronic funds transfer system employs a means to verify a personal identification number PE entered by the user with the correct PIN (PT) stored at the host terminal. The remote and host terminals each generate an encryption key, and encrypt PE and ... | 01/10/1989 |
| 4755940 | Transaction security system An electronic funds transfer system (EFT) is described in which retail terminals located in stores are connected through a public switched telecommunication system to card issuing agencies data processing centers. Users of the system are issued with intel... | 07/05/1988 |
| 4752676 | Reliable secure, updatable "cash" card system A method of using a card which has a substrate with at least one magnetic track thereon, the method involving dividing the track into a plurality of spaced blocks with a start sentinel being magnetically recorded at the start of each block. A user's criti... | 06/21/1988 |
| 4731842 | Security module for an electronic funds transfer system A security module for use in an electronic funds transfer terminal is contained in a tamper-resistant housing. The module has a PIN pad and is designed to encrypt secret data, such as users personal identity numbers (PINs), so that other terminal processe... | 03/15/1988 |
| 4697072 | Identification card and authentication system therefor A card holder inputs personal identification number (PIN') data as secret data and transaction data (AMT) in an LSI in an identification card through a keyboard. The LSI calculates encrypted data (SAN) in accordance with the input data (PIN' and AMT). The... | 09/29/1987 |
| 4675815 | Transaction safety system for falsely indicating successful completion of illegal transaction A transaction device, having an input portion, and a processing device, having a client file, which is located at a processing center, are connected by a telephone line for processing data input on the transaction device. The transaction device sends an a... | 06/23/1987 |
| 4661658 | Offline PIN validation with DES A method of offline personal authentication in a multi-terminal system uses a secret user PIN, a secret key and other nonsecret data stored on a customer memory card and a nonsecret validation value stored in each terminal connected in a network. The tech... | 04/28/1987 |
| 4629872 | Method and apparatus for verifying personal identification numbers and checking stored number series in identification media A method and apparatus for verifying a personal identification number and checking a number series put onto an identification medium, containing information readable by machine in the form of a card and account number and permanent information in the form... | 12/16/1986 |
| 4621326 | Method of reducing customer transaction time in an automatic teller machine by parallel processing of sequence events A method is provided for reducing customer transaction time in an automated teller machine (ATM) having various peripheral devices associated therewith. Each peripheral device associated with the ATM; e.g., a card handler mechanism, a printer mechanism, o... | 11/04/1986 |
| 4500750 | Cryptographic application for interbank verification In a data communication network which includes terminals interconnected via a central switch, a process for verifying the identity of a terminal user who is provided with secret data associated with his identity. In carrying out the verification process, ... | 02/19/1985 |
| 4460960 | Transaction execution system having keyboard and message customization, improved key function versatility and message segmentation Key initiated transaction requests at a terminal remote from and in communication with a host data processing system are processed at the terminal under the selective control of the host. Each active transaction key at the terminal keyboard is assigned on... | 07/17/1984 |
| 4438824 | Apparatus and method for cryptographic identity verification The apparatus for identity verification using a data card contains at least one terminal and a security service station. The terminal(s) and the station are connected to each other via a communication system. The terminal is provided with a central proces... | 03/27/1984 |
| 4423287 | End-to-end encryption system and method of operation An efficient end-to-end encryption system including key management procedures for providing secure, financial data communication between a system user at one of a plurality of transaction terminals of one of a plurality of acquirer institutions and one of... | 12/27/1983 |
| 4390968 | Automated bank transaction security system A banking system is disclosed which comprises a central computer system in electrical communication with remote automated teller machines, wherein the architecture of the banking system is such that the likelihood of a security penetration is substantiall... | 06/28/1983 |
| 4386266 | Method for operating a transaction execution system having improved verification of personal identification A transaction execution system including at least one transaction terminal in communication with a host data processing system. A transaction at the terminal is authorized based, at least in part, upon correspondence of personal identification data entere... | 05/31/1983 |
| 4357529 | Multilevel security apparatus and method A card-encoding system and method preserves the security of the encoding process against duplication and counterfeiting of cards by securing the interactions under the control of the individual and then of the issuing institution. Multilevels of offset co... | 11/02/1982 |
| 4317957 | System for authenticating users and devices in on-line transaction networks A method for efficiently protecting transactions and providing authentication of users and devices in on-line systems that transfer funds electronically, dispense cash, or provide a good or permit a service to be utilized is provided. The transaction may ... | 03/02/1982 |
| 4315101 | Method and apparatus for securing data transmissions A method and apparatus are provided for improving the security of data transmissions between stations and for controlling secured transactions from remote locations in a data-transfer system. The method and apparatus obviate the need for transmitting user... | 02/09/1982 |
| 4304990 | Multilevel security apparatus and method A card-coding system and method preserves the security of the encoding process against duplication and counterfeiting of cards by securing the interactions under the control of the individual and then of the issuing institution. Multilevels of offset code... | 12/08/1981 |
| 4283599 | Method and apparatus for securing data transmissions A method and apparatus are provided for improving the security of data transmissions between stations and for controlling secured transactions from remote locations in a data-transfer system. The method and apparatus obviate the need for transmitting user... | 08/11/1981 |
| 4281215 | Method and apparatus for securing data transmissions A method and apparatus are provided for improving the security of data transmissions between stations. The method obviates the need for transmitting user-identification information such as personal identification number (PIN) from station to station, e.g.... | 07/28/1981 |
| 4271482 | Data processing system which protects the secrecy of confidential data A data processing system which protects the secrecy of confidential inforion includes a data processing machine with which an operator may carry on a confidential dialogue through a data transmitting device such as a keyboard and an auxiliary device in w... | 06/02/1981 |
| 4268715 | Method and apparatus for securing data transmissions A method and apparatus are provided for improving the security of data transmissions between stations and for controlling secured transactions from remote locations in a data-transfer system. The method and apparatus obviate the need for transmitting user... | 05/19/1981 |
| 4259720 | Security system for electronic funds transfer system A security system, particularly useful in an electronic funds transfer system, makes use of secret identification codes known only to system users. The codes are encrypted upon insertion into the system and are stored in a data processing unit in encrypte... | 03/31/1981 |
| 4234932 | Security system for remote cash dispensers A banking system is provided which is comprised of a central computer, a customer accounts main memory, and plural remote transaction terminals in communication with the central computer. Each remote terminal includes a cash dispensing apparatus, a person... | 11/18/1980 |
| 4223403 | Cryptographic architecture for use with a high security personal identification system A Cryptographic Architecture for improving the security of Cash-Issuing or similar Terminal Systems when it is necessary to operate Off-Host. Each Terminal is connected to a central Controller which is in turn connected to a central Host. The Master crypt... | 09/16/1980 |
| 4218738 | Method for authenticating the identity of a user of an information system Secure hardware is provided for cryptographically generating a verification pattern which is a function of a potential computer user's identity number, the potential computer user's separately entered password, and a stored test pattern. The test pattern ... | 08/19/1980 |
| 4215421 | Data-processing system which protects the secrecy of confidential data A data processing system is provided which protects the secrecy of confidential data at the stages where it is formulated and transmitted to a card (first auxiliary member) having a code key thereon. The data processing system includes a data-processing m... | 07/29/1980 |
| 4214230 | Personal identification system A method and apparatus for verifying that the bearer of a card (e.g., credit card, bank card, etc.) is authorized to use the card. The card bears machine-readable indicia of an account number (PAN) and the bearer of the card has memorized a personal ident... | 07/22/1980 |
| 4208575 | Credit card or check validator A validator checks the identity of the holder of a credit card or check by comparing a secret code number derived from the holder with a number derived from the serial number of the credit card or check. The basic components of the validator are a keyboar... | 06/17/1980 |
