摘要:
An authenticated RFID system is provided that uses elliptic curve cryptography (ECC) to reduce the signature size and read/write times when compared to traditional public key implementations such as RSA. Either ECDSA or ECPVS can be used to reduce the signature size and ECPVS can be used to hide a portion of the RFID tag that contains sensitive product identifying information. As a result, smaller tags can be used or multiple signatures can be written at different stages in a manufacturing or supply chain. A key management system is used to distribute the verification keys and aggregate signature schemes are also provided for adding multiple signatures to the RFID tags, for example in a supply chain.
摘要:
Methods for choosing groups for a static Diffie-Hellman key agreement protocol to inhibit active attacks by an adversary are provided. In mod p groups, an even h is chosen of value approximately (9/16)(log2n)2, values r and n are determined using sieving and primality testing on r and n, and a value t is found to compute p=tn+1 wherein p is prime. In elliptic curve groups defined over a binary filed, a random curve is chosen, the number of points on the curve is counted and this number is checked for value of 2n wherein n is prime and n−1 meets preferred criteria. In elliptic curve groups defined over a prime field of order q, a value n=hr+1 is computed, wherein n is prime and n−1 meets preferred criteria, and a complex multiplication method is applied on n to produce a value q and an elliptic curve E defined over q and having an order n.
摘要:
A sensor for analyzing a fluid sample has a sample cavity for accepting sample fluid. At least one test region is disposed along the sample cavity, and at least one vent fulfills the dual function of venting the sample cavity and guiding the sample fluid in the sample cavity via appropriate location and geometry of at least one sample guide edge.
摘要:
Undesirable electronic messages, such as the unsolicited broadcast e-mail known as spam, is not only a nuisance, but wastes both computer and user resources. Conversely, desirable electronic messages with sensitive content is important to secure, so that it is not forged, tampered or revealed. Accordingly, the present invention provides cryptographic methods that simultaneously secures electronic communication and helps fight spam.
摘要:
Systems and methods for facilitating rental of a good comprising storing a good identifier associated with the good in a product database, displaying product information associated with the good based on a geographical location of the good, receiving a rental request from the renter, and sending a contact information associated with the renter to a listing party at least in part based on the rental request. The rental request may be anonymous. An inquiry may be received from the renter and anonymized and sent to the listing party. An anonymous negotiation between a listing party and the renter may be conducted and the rental price and/or the rental term may be determined based on the anonymous negotiation.
摘要:
The present invention relates to a method of using an antimicrobial composition on a food product where the antimicrobial composition is applied to a food product, the food product is packaged and sealed, and then activation energy is applied to the sealed food product.
摘要:
The present invention is directed to a calcium containing vegetable protein containing composition, comprising; a calcium containing protein material containing at least 90% protein by weight, dry basis, said protein material having a dry basis degree of hydrolysis of from about 1.8% up to about 4.0%, a dry basis calcium content of from 0.10% up to about 0.6%, a dry basis density of from about 0.28 up to about 0.48 g/cc, a pH of from about 6.9 up to about 7.7, and a particle size wherein not more than 10% of the particles are retained on a 30 mesh screen. The present invention is also directed to a calcium containing vegetable protein based beverage composition, comprising; a liquid and a calcium containing hydrolyzed soy protein isolate containing at least 90% protein by weight, dry basis, said protein material having a degree of hydrolysis of from about 1.8% up to about 4.0%, a percent calcium of from about 0.15 up to about 0.60, a density of from about 0.15 up to about 0.48 grams per cubic centimeter, a pH of from about 6.9 up to about 7.7, and a particle size wherein not more than 10% of the particles are retained on a 30 mesh screen
摘要:
An apparatus and method is disclosed which may comprise an EUV drive laser system comprising: a solid state seed laser master oscillator laser; a gas discharge excimer laser gain generator producing a drive laser output light beam. The solid state seed laser may comprise a third harmonic Nd:YLF laser, which may be tunable. The gas discharge excimer gain generator laser may comprise a XeF excimer laser power amplifier or power oscillator. The solid state laser may comprise a tunable laser tuned by changing the temperature of a laser crystal comprising the solid state laser, or by utilizing a wavelength selection element, e.g., a Lyot filter or an etalon.
摘要:
An oscillator-amplifier gas discharge laser system and method is disclosed which may comprise a first laser unit which may comprise a first discharge region which may contain an excimer or molecular fluorine lasing gas medium; a first pair of electrodes defining the first discharge region containing the lasing gas medium, a line narrowing unit for narrowing a spectral bandwidth of output laser light pulse beam pulses produced in said first discharge region; a second laser unit which may comprise a second discharge chamber which may contain an excimer or molecular fluorine lasing gas medium; a second pair of electrodes defining the second discharge region containing the lasing gas medium; a pulse power system providing electrical pulses to the first pair of electrodes and to the second pair of electrodes producing gas discharges in the lasing gas medium between the respective first and second pair of electrodes, and laser parameter control mechanism modifying a selected parameter of a selected laser output light pulse beam pulse produced by said gas discharge laser system by controlling the timing of the occurrence of the gas discharge between the first pair of electrodes and the occurrence of the gas discharge between the second pair of electrodes.