2014/0040614 A12/2014 Kolesnikov et al. 2014/0041039 A1 2/2014 Saldamli et al.
2014/0089908 AL 3/2014 Dunn et al. 2014/0108435 A1* 4/2014 Kolesnikov. GO6F 7/24 …

A user device and one or more server computers securely evaluate a k-nearest neighbor
model, with reasonable computation speed and bandwidth utilization, using a combination …

Abstract Systems and methods utilized to protect data. One method includes maintaining, by
one or more processing circuits in a production environment, encrypted data associated with …

(57) ABSTRACT A range determination unit (412) takes as input an input ciphertext C;
resulting from encrypting input data, deter mines whether a value obtained from the input …

A homomorphic encryption device includes: a recryption parameter generating circuit, a
recryption circuit, and an arithmetic circuit. The recryption parameter generating circuit is …

Abstract Systems and methods utilized to protect data. One method includes maintaining, by
a first processing circuit in a production database of a production environment system …

Embodiments allow comparison of key figures (eg, costs, lead times) between different
entities in a privacy-preserving manner, utilizing secure multi-party computation (MPC) …

(57) A method for providing ciphertext data by a first computing device having memory
includes obtaining, from the memory, plaintext data having a structure; providing the …