2281 results about "Random number generation" patented technology

A disclosed gaming machine provides methods and apparatus for operating a wireless game player that presents a game of chance executed on a gaming machine in communication with the wireless game player. In one embodiment, the wireless game player is a hand-held mobile device, electronically linked to a licensed gaming machine via a wireless connection. All random number generation (RNG) events, game outcomes, meter information, game related information, and all cash transactions are maintained in the licensed (controlled) gaming machine and not the wireless game player. The wireless game player may be used anywhere within the legal areas of the casino and it has the capability of identifying who is using it. For example, a biometric input device, such as a finger print reader may be used on the wireless game player to identify the player. Thus, the issue of under-age or excluded players is addressed.

Multiple secure transactions are provided through use of a method that uses customer one-time unique purchase order numbers (“Coupons”) generated by an algorithm that uses a permutated user key and a user insertion key as input variables. A user key (such as a Personal Identification Number, or “PIN”) is combined with a permutation variable that is correlated with a customer sequence number to create the permutated user key. A random number generator is used to generate the user insertion key correlated with the customer sequence number. The algorithm can insert the permutated user key into a user account number through use of the user insertion key. A Coupon is validated by confirming that it is contained in a set of money source Coupons generated by a money source using the user key and a random number generator that is synchronized with the random number used to generate Coupons. Once a Coupon is validated, the matching money source Coupon and all earlier generated money source Coupons are deleted from the set, and a new set is generated. If a preselected number of Coupons are not validated for a chosen entity, an invalid user account number will be set. Coupons can be used for credit card or bank card transactions, and they can be generated without changing fixed digits of traditional twenty digit account numbers.

An integrated circuit for data encryption/decryption and secure key management is disclosed. The integrated circuit may be used in conjunction with other integrated circuits, processors, and software to construct a wide variety of secure data processing, storage, and communication systems. A preferred embodiment of the integrated circuit includes a symmetric block cipher that may be scaled to strike a favorable balance among processing throughput and power consumption. The modular architecture also supports multiple encryption modes and key management functions such as one-way cryptographic hash and random number generator functions that leverage the scalable symmetric block cipher. The integrated circuit may also include a key management processor that can be programmed to support a wide variety of asymmetric key cryptography functions for secure key exchange with remote key storage devices and enterprise key management servers. Internal data and key buffers enable the device to re-key encrypted data without exposing data. The key management functions allow the device to function as a cryptographic domain bridge in a federated security architecture.

The present invention provides a gaming machine that can play both Class II and Class III games. Some implementations provide a gaming machine that has certain features (e.g., a true random number generator or “RNG”) enabled for Class III play and disabled for Class II play. Some aspects of the invention provide methods for determining when a Class III game is available. Other aspects of the invention allow a player to “line up” for a desired Class III game while playing another game, such as a Class II game or another Class III game, on the same gaming machine until the desired Class III game is available. Some such implementations grant higher priority to certain players according to their gaming history, e.g., as indicated by player tracking/player loyalty data. Alternative aspects of the invention allocate available Class III games in other ways, e.g., by playing a Class II game for a chance to play a Class III game, by lottery, or otherwise. Player tracking information may be shared and/or combined for Class II and Class III game play and may be used to determine gaming history.

A method of performing electronic communications between members of a group wherein the communications are authenticated as being from a member of the group and have not been altered, comprising: generating a plurality of random numbers; distributing in a digital medium the plurality of random numbers to the members of the group; publishing a hash value of contents of the digital medium; distributing to the members of the group public-key-encrypted messages each containing a same token comprising a random number; and encrypting a message with a key generated from the token and the plurality of random numbers.

A random number generator having a simple construction which generates physical random numbers necessary for encryption. The random number generator has an amplifier to amplify noise signals generated from a noise source and digitizer to digitize the amplified noise signals. The digitizer includes a serial register.

A system that facilitates opening of a bank account by banking personnel for a customer. The account opening system includes an automatic rate determination feature that uses customer information, account information and other criteria to determine an account interest rate. The rate determination system may also mediate rate negotiation between a personal banker and the customer by limiting the increase in rate awarded by the personal banker. An auditing system assigns numbers to a series of profiles, each describing a request to open an account. Profiles to be audited are determined by generating random numbers that fall within the range of assigned profile numbers. Random number generation is repeated until a threshold percentage of profiles have been selected for auditing. The account opening system includes a system for tracking the progress of the account application and for organizing information recorded by the personal banker during interactions with the customer.

A storage device features a processor and a random number generation which are communicatively coupled to a memory. The memory comprises an access control logic that is configured to (i) transmit a first message that comprises information associated with a random number generated by the random number generator and a first keying material, (ii) receive a second message in response to the first message, the second message comprises information generated using at least the random number, (iii) recover information from the second message, the recovered information comprises information generated using at least pre-stored keying material and a return value being based on the random number, (iv) compare the return value from the recovered information with the random number, and (v) alter an operating state of the storage device from a locked state to an unlocked state upon the return value matching the random number, the unlocked state allows one or more devices to control storage device including accessing stored content within the storage device.

The invention discloses a block chain information archiving and privacy protection method. The block chain information archiving and privacy protection method comprises the steps of adding random number generation Hash values to information needing archiving; then signing by an interest-related person or a eyewitness and generating Hash values; and finally recording at a block chain. Some information needing archiving is formatting and separable formatting information and self-filling information respectively stored and subjected to Hash verification, such as gap-filling information, selection information, postscript information, random number information (for preventing brute force attack). Data which are encrypted by using a public key only can be decrypted by a relevant person who knows the original information by using a private key; a third party verifies true and false of the information; and the encrypted information can be disclosed for a judicial institution if judiciary involvement is needed.

An apparatus for implementing a game having a deterministic component and a non-deterministic component wherein a player uses the game through at least one player interface unit. Each player interface unit generates a player record indicating player-initiated events. A random number generator provides a series of pseudo-random numbers and a rules library stores indexed rules for one or more games. An interface registry stores mapping records where the mapping records are used to associate the player-initiated events to pre-selected rules in the rules library. A control means is coupled to the player interface to receive the output of the player interface unit, coupled to the interface registry, the rules library, and the random number generator. The control means processes the player record and returns an output record to the player interface unit where the output record is determined by executing the game's rules with reference to the pseudo-random numbers and predefined combinatorial algorithms for selecting sets of the pseudo-random numbers.

A plurality of computer nodes communicates using seemingly random IP source and destination addresses and (optionally) a seemingly random discriminator field. Data packets matching criteria defined by a moving window of valid addresses are accepted for further processing, while those that do not meet the criteria are rejected. In addition to “hopping” of IP addresses and discriminator fields, hardware addresses such as Media Access Control addresses can be hopped. The hopped addresses are generated by random number generators having non-repeating sequence lengths that are easily determined a-priori, which can quickly jump ahead in sequence by an arbitrary number of random steps and which have the property that future random numbers are difficult to guess without knowing the random number generator's parameters. Synchronization techniques can be used to re-establish synchronization between sending and receiving-nodes. These techniques include a self-synchronization technique in which a sync field is transmitted as part of each packet, and a “checkpoint” scheme by which transmitting and receiving nodes can advance to a known point in their hopping schemes. A fast-packet reject technique based on the use of presence vectors is also described. A distributed transmission path embodiment incorporates randomly selected physical transmission paths.

A hash function used for content addressing is different from the hash function used for content verification. Adding a file to a database involves storing both hash function values in a table as pair. Verifying the integrity of a file believed to be a duplicate in a database, or when retrieving a file, makes use of the verification hash function. Files can be continuously checked. A multi-level database can be used. A second hash function can be added to an existing system. A verification hash function can be upgraded and more than one content verification hash function can be used. In a variation, a random number generator is used instead of a hash function for content addressing; the verification hash function is also used. Files addressed using a random number are added or retrieved from a database and their verification hash values are checked. Time stamps and digital signatures are used for security.

A progressive game is implemented on a gaming system, wherein the gaming system includes one or more gaming machines connected to a game server, and wherein the progressive game has a progressive prize value that increases according to a progressive prize growth rate. The progressive game includes a selectable targeted progressive prize value, a selectable targeted progressive prize time, and one or more enticement factors. The progressive prize growth rate is calculated using the selectable targeted progressive prize value, the selectable targeted progressive prize time, and the one or more enticement factors. Additionally, a random number generation algorithm tests to determine if there is a progressive prize win at each predetermined time period. The selectable targeted progressive prize time is used to calculate the predetermined time period for testing for a progressive prize win. If a progressive prize win has not been identified, the progressive prize value is incremented by the progressive prize growth rate. If a progressive prize win has been identified, a random number generation algorithm determines one or more winners of the progressive prize.

Data to be encrypted is effectively encrypted by a data delivery system for encrypting the data to be encrypted with a transmitting apparatus and decrypting a cipher thereof with a receiving apparatus. In a configuration for encrypting and decrypting the data to be encrypted by using a random number sequence generated by a random number generating portion for generating the random number sequence uniquely decided from an input parameter, the transmitting apparatus generates the input parameter to perform encryption based on metadata of the data to be encrypted while the receiving apparatus generates the input parameter to perform cipher decryption based on the metadata embedded in the data to be encrypted.

A quantum noise random number generator system that employs quantum noise from an optical homodyne detection apparatus is disclosed. The system utilizes the quantum noise generated by splitting a laser light signal using a beamsplitter having four ports, one of which receives one of which is receives the laser light signal, one of which is connected to vacuum, and two of which are optically coupled to photodetectors. Processing electronics process the difference signal derived from subtracting the two photodetector signals to create a random number sequence. Because the difference signal associated with the two photodetectors is truly random, the system is a true random number generator.

A system and method for securing a Radio Frequency (RF) transaction using a RF identification device (RFID) transaction device is provided. The method includes a RFID transaction device including a random number generator for generating a random number. The random number may be used by an account issuer to verify the validity of a RFID transaction device or RFID reader communicating on the RF transactions network. The authorizing agent may receive the random number and compare the random number to a device validating code.

The present invention gives robustness for the denial-of-service to the authentication protocol itself, loads no additional public key computation, and is applicable to any authentication protocol in which the client authenticates the server by sending the client's random number encrypted under the public key of the server. The method for defeating a denial-of-service attack for use in a communication system in which the client sends a ciphertext of a random number chosen by the client encrypted under a public key of the server to authenticate the server includes the steps of: (a) the server's generating a random number rB in response to a service request from the client and sending the random number to the client; (b) the server's receiving the ciphertext which the client produced by using the random number rB from the client and a random number rA of the client; (c) the server's recovering a random number rB from the ciphertext received from the client and comparing the recovered random number with the random number sent to the client; and (d) if the random numbers match at the step (c), providing the service, and, otherwise, denying the service.