Methods and encryption nodes for encrypting messages

Abstract

A method and encryption node (300) for providing encryption of a message m according to a selected encryption scheme. A set of k noise factors is precomputed (3:1) by the encryption node (300) in advance according to the random number and the predefined integer parameters of the selected encryption scheme. These k noise factors are saved (300a) for use in encrypting message m when requested (3:2) later by the client (302). A subset of (3:3) l noise factors is then selected from the precomputed set of k noise factors and used as input to the encryption scheme when encrypting (3:5) message m by computing the ciphertext c, The ciphertext c is transmitted (3:6) as an encrypted message to eg a client (302). Consequently, less time is spent calculating the necessary noise factors after receipt of an encryption request, and thus a higher throughput of messages to be encrypted can be achieved. In particular, this solution can be used to increase the throughput of message streams.

Description

technical field [0001] The present disclosure generally relates to methods and encryption nodes for providing encryption of messages. Background technique [0002] In the field of data processing and analysis, customers such as different companies, businesses, organizations, and institutions require hardware and software resources to perform various data processing operations, for example, when analyzing information of various records related to users to extract knowledge and statistics therefrom This is the case with data. The processing involved in such data analysis can be quite complex and computationally intensive, requiring considerable capacity to perform the data processing. [0003] Traditionally, customers themselves may own and maintain all the resources they need for data processing, but this can be quite expensive and time-consuming. For example, it usually takes considerable knowledge and skill to first figure out what types of resources are needed, and then ...

AI Technical Summary

Problems solved by technology

[0015] However, there is a problem that cryptographic operations using the above-mentioned Paillier cryptosystem involve rather complex and time-consuming computations, which may not be applicable in situations where high data throughput is required for certain analytical operations

In this case, the Paillier cryptosystem may not be able to encrypt incoming data streams with a high enough throughput to become a bottleneck for applications requiring high data throughput

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