Fujitsu Corporation

Toshiya Shimizu

Takeshi Shimoyama

Jumpei Yamaguchi

Yusuke Sakai

Arnab Roy

Koichi Yasaki

Hart Montgomery

Ikuya Morikawa

Goichiro Hanaoka

Ryuichi Ohori

Seonghan Shin

Rikuhiro Kojima

Yuji Higuchi

A signature control method implemented by a computer, the signature control method including: acquiring, by a processor circuit of the computer, a plurality of pieces of document information and signature information that corresponds to each piece of document information of the plurality of pieces of document information; generating, by the processor circuit of the computer, aggregate signature information obtained by aggregating the signature information that corresponds to the each piece of document information of the plurality of acquired pieces of document information on a basis of the plurality of acquired pieces of document information; and outputting, by the processor circuit of the computer, the generated aggregate signature information in association with aggregate public key information obtained by aggregating public key information that corresponds to the each piece of document information of the plurality of pieces of document information and the plurality of pieces of document information.

Signature control method, non-transitory computer-readable storage medium for storing signature control program, and information processing device

A storage unit holds a classification model that calculates a confidence score from image data, and a transformation model that is a model for transforming a feature value having fewer dimensions than the image data into the image data and is created such that a set of feature values corresponding to a set of image data follows a probability distribution. A processing unit extracts a feature value according to the probability distribution. The processing unit transforms the feature value into image data using the transformation model and calculates a confidence score corresponding to the image data using the classification model. The processing unit updates, based on the probability distribution and the feature value, a feature value to be input to the transformation model from the feature value to a feature value in such a manner that a confidence score to be calculated is higher than the confidence score.

Control method and information processing apparatus

An encryption processing system includes: a first device; second devices; and a third device, wherein the first device generates synthesis keys by selecting public keys of the second devices; generates an intermediate text from confidential texts generated by encrypting secret information by using public keys of the second devices having decryption authority; generates ciphertexts by further encrypting the intermediate text using the synthesis keys; and makes public the ciphertexts, each of the second devices verifies validity of the ciphertexts; generates decryption key fragments by using an own private key; and makes public the decryption key fragments, the third device verifies validity of the decryption key fragments; generates a decryption key by combining decryption key fragments; generates the Intermediate text by decrypting one of the ciphertexts; and makes public the intermediate text, and the second device decrypts the intermediate text using the own private key; and restores the secret information.

Encryption processing system and encryption processing method

A method may include obtaining a set of multivariate quadratic polynomials associated with a multivariate quadratic problem and generating an Ising Model connection weight matrix 'W' and an Ising Model bias vector 'b' based on the multivariate quadratic polynomials. The method may also include providing the matrix &#x201c;W&#x201d; and the vector &#x201c;b&#x201d; to an annealing system configured to solve problems written according to the Ising Model and obtaining an output from the annealing system that represents a set of integers. The method may also include using the set of integers as a solution to the multivariate quadratic problem.

Solving multivariate quadratic problems using digital or quantum annealing

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Kawasaki, Japan

Toshiya Shimizu