A management center 520 determines a public key y.sub.A of a user A 510 using the user A's secret key x.sub.A and announces the public key y.sub.A to a user B 530. The user A 510 repeats generation of a random number k and calculation of r.sub.1 =g.sup.k (mod p) and r.sub.2 =f(r.sub.1,m)=r.sub.1 +m(mod p) until r.sub.2 and q meet a condition r.sub.2 <q. If the condition is met, the user A 510 finds s by calculating sk=(r.sub.2 +S+1)+r.sub.2 x.sub.A (mod q) and sends a ciphertext (r.sub.2,s) t...

A device and method are disclosed for capturing an electronic image signal from the interaction of light with features of, on, or near a media surface. In addition to signature marks, these features can include characters, character strings, symbols, icons, dot pitches, line types, line and character formats, optical densities, color, indentations, texture, and patterns. More specifically, the claimed invention is useful primarily for optically capturing, processing, parameterizing, and identify...

An assay to determine the specific expression and suppression of proteins in response to a stressor is disclosed. An organism exposed to a stressor, including disease caused by exposure to, e.g., a parasite, or a substance suspected of causing an adverse effect, is assayed to determine a first set of proteins expressed and a second set of proteins suppressed in response to the stressor. The amount of each protein expressed and the amount of each protein suppressed can be statistically analyzed t...

A method of authenticating a signature including the steps of sampling a signature and storing data representative of the signature, converting the data to high dimensions vectors, feeding the high dimension vectors to an unsupervised neural network, performing a high order principal component extraction process on the high dimensions vectors to thereby identifying clusters of high dimension points, and analyzing the clusters of high dimension points to determine, based on previously stored info...

Digitized signatures are recorded in respective digitized signature records. Each digitized signature record includes at least the position of each point of a signature in coordinates relative to a coordinate of a previous point thereof and time. Digitized signatures are identified, verified or authenticated by comparing characteristics thereof, may be indexed for facilitating comparison, may be utilized for network and Internet transactions, and may be converted to image format.

A signature device having an item selection input section which accepts a selection of a group of items formed by combining an item delivered from at least one supplier and an item generated by itself, a path verification information updating section which updates path verification information to verify a delivery route included in the signature information on the delivered item, a signature information preparation section which prepares new signature information from a signature prepared by its...

An electronic printing system for scanning signature pages for signature jobs in which the pages of the document are placed face down in registered position on the platen of a scanner such that the signature images are side by side in the fast scan direction in order to enable an array to view both images concurrently on relative movement between the array and the platen in a slow scan direction.

A method is presented to reduce the quantity of microbubbles having diameters of approximately 1000 microns or less in seawater as a means of ship wake signature suppression. Ultrasonic acoustic energy is projected into a volume of seawater in which the microbubbles reside, e.g., a ship's wake. The ultrasonic acoustic energy has a constant frequency selected from the range of approximately 0.5-2.5 MHz.

A signature handling apparatus includes a plurality of saddles and a plurality of signature openers. Each signature opener is associated with a respective saddle. The signature openers move together with the saddles in a first direction along an endless path past a signature feeding mechanism with the saddles extending transversely to the first direction. Each signature opener opens one respective signature as the signature opener moves past the signature feeding mechanism to enable positioning ...

A folder apparatus is disclosed which has at least one lead-in tape mechanism having a left lead-in tape and left exit roller and a corresponding right lead-in tape and right exit roller, the right and left lead-in tapes forming a signature passage for delivery of a signature, and the left exit rollers being at a different height than the right exit rollers. A signature aiming device controls the direction of the signature path by moving one or both sets of exit rollers.