Abstract: Provided herein are systems, methods and computer readable storage media for facilitating payments for consumer transactions and redemption of deal offerings. In providing such functionality, the system can be configured to, for example, receive payment for one or more products, determine a deal voucher's current value and cause the redemption of the deal voucher.

Abstract: An encryption key generating method and apparatus based on homomorphic encryption, and a ciphertext operation method and apparatus using the generated encrypt key are disclosed. The method of generating an encryption key for performing encryption based on homomorphic encryption includes receiving data, generating a first encryption key and a second encryption key used for encrypting the data based on a secret key, and transmitting the first and second encryption keys.

Abstract: A radiation detector is generally described. The detector can comprise a thallium halide (e.g., TlBr) and/or an indium halide. The thallium halide and/or indium halide can be doped with a dopant or a mixture of dopants. The dopant can comprise an alkaline earth metal element, a lanthanide element, and/or an element with an oxidation state of +2. Non-limiting examples of suitable dopants include Ba, Sr, Ca, Mg, La, Ce, Pr, Nd, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, and/or Yb. Radiation detectors, as described herein, may have beneficial properties, including enhanced charge collection and long-term stability.

Abstract: Provided herein are systems, methods and computer readable media for programmatically generating and/or revising promotions for a provider as well as generating and providing analytics data regarding currently offered promotions in real-time. In providing such functionality, the system can be configured to, for example, monitor and analyze various promotions, including current promotions and analytics data about promotion-related purchases, that enable the system to determine the relative successfulness of a promotion for a provider and/or category of provider. Upon determining what has been more successful or is expected to be a more successful promotion for a provider, the system can present the promotion to the provider for approval and/or make the promotion to consumers programmatically.

Abstract: Disclosed is a method and apparatus for modulus refresh, where the method for modulus refresh of a ciphertext in homomorphic encryption includes receiving a first ciphertext corresponding to a first modulus, generating a second ciphertext by performing a blind rotation on the first ciphertext, and generating a target ciphertext corresponding to a second modulus greater than the first modulus based on the first ciphertext and the second ciphertext.

Abstract: Provided herein are systems, methods and computer readable media for programmatically generating and/or revising promotions for a provider as well as generating and providing analytics data regarding currently offered promotions in real-time. In providing such functionality, the system can be configured to, for example, monitor and analyze various promotions, including current promotions and analytics data about promotion-related purchases, that enable the system to determine the relative successfulness of a promotion for a provider and/or category of provider. Upon determining what has been more successful or is expected to be a more successful promotion for a provider, the system can present the promotion to the provider for approval and/or make the promotion to consumers programmatically.

Abstract: An optical device useful for spatial light modulation.

Abstract: An encoding method is disclosed. The present encoding method comprises the steps of: receiving a plurality of messages; encoding the plurality of messages into a polynomial expression having been multivariately defined, and encoding the multivariately defined polynomial expression so as to generate a homomorphic cyphertext.

Abstract: An operation apparatus and method for processing a homomorphic encrypted message are disclosed. The method includes producing an approximate polynomial corresponding to an operation function to be applied to a homomorphic encrypted message and approximately operating the homomorphic encrypted message using the approximate polynomial. Thus, an encrypted message may be efficiently processed.

Abstract: An operation apparatus and method for processing a homomorphic encrypted message are disclosed. The method includes producing an approximate polynomial corresponding to an operation function to be applied to a homomorphic encrypted message and approximately operating the homomorphic encrypted message using the approximate polynomial. Thus, an encrypted message may be efficiently processed.

Abstract: A drop emitting device that includes a drop generator, a drive signal including a plurality of fire intervals applied to the drop generator, wherein the drive signal includes in each fire interval a bi-polar drop firing waveform or a time varying non-firing waveform.

Abstract: A drop emitting device that includes a drop generator, a drive signal including a plurality of fire intervals applied to the drop generator, wherein the drive signal includes in each fire interval a bi-polar drop firing waveform or a time varying non-firing waveform.