Unimodular matrix-based message authentication codes (MAC)
First Claim
1. A puzzle apparatus comprising:
- (a) a first plurality of removable puzzle pieces that form a first picture when properly combined together that includes at least one visual representation associated with at least one audible sound producing means;
(b) at least a first detectible means associated with at least one of said puzzle pieces;
(c) a platform having a surface on which said puzzle pieces can be arranged and said at least one audible sound producing means;
(d) detection means associated with said platform and adapted for sensing said at least one detectible means, and providing a first output signal that is representative of said first plurality of puzzle pieces; and
(e) means actuable by a user for receiving said first output signal and activating said at least one sound producing means to produce a first audible sound associated with said at least one visual representation.
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Accused Products
Abstract
The present invention leverages the invertibility of determinants of unimodular matrices to provide a universal hash function means with reversible properties and high speed performance. This provides, in one instance of the present invention, length controllable hash values comprised of vector pairs that can be processed as one instruction in a SIMD (single instruction, multiple data) equipped computational processor, where the vector pair is treated as a double word. The characteristics of the present invention permit its utilization in streaming cipher applications by providing key data to seed the ciphering process. Additionally, the present invention can utilize smaller key lengths than comparable mechanisms via inter-block chaining, can be utilized to double hash values via performing independent hash processes in parallel, and can be employed in applications, such as data integrity schemes, that require its unique processing characteristics.
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Citations
20 Claims
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1. A puzzle apparatus comprising:
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(a) a first plurality of removable puzzle pieces that form a first picture when properly combined together that includes at least one visual representation associated with at least one audible sound producing means;
(b) at least a first detectible means associated with at least one of said puzzle pieces;
(c) a platform having a surface on which said puzzle pieces can be arranged and said at least one audible sound producing means;
(d) detection means associated with said platform and adapted for sensing said at least one detectible means, and providing a first output signal that is representative of said first plurality of puzzle pieces; and
(e) means actuable by a user for receiving said first output signal and activating said at least one sound producing means to produce a first audible sound associated with said at least one visual representation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A puzzle apparatus comprising:
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(a) a first plurality of puzzle pieces that form a first picture when properly combined together that includes a visual representation associated with at least one audible sound producing means, said sound producing means including;
i. a plurality of actuators designed to be individually actuated by a user as desired;
ii. electronic circuitry for producing output signals corresponding to said audible sound producing means;
iii. means for receiving said electronic signals and producing audible sounds corresponding to such signals;
(b) at least a first detectible means associated with at least one of said puzzle pieces;
(c) a platform having a surface on which said puzzle pieces can be arranged and said at least one sound producing means;
(d) detection means associated with said platform and adapted for sensing said at least one detectible means, and providing a first output signal that is representative of said first plurality of puzzle pieces; and
(e) means actuable by a user for receiving said first output signal and activating said at least one sound producing means to produce a first audible sound associated with said at least one visual representation. - View Dependent Claims (17, 18, 19, 20)
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Specification