Encryption and decryption of time series data using a digital filter array

An apparatus, comprising:

• a memory;
• and
• at least one processing device of a digital time series generation device, coupled to the memory, operative to implement the following steps:
• obtaining a plurality of digital time series samples generated by said digital time series generation device;
• applying, by the at least one processing device of said digital time series generation device, said plurality of digital time series samples to a digital filter array that combines delayed versions of said digital time series samples using a plurality of coefficients to generate a plurality of encrypted digital time series samples, wherein said plurality of coefficients each comprise a portion of an encryption key associated with said digital time series generation device, wherein said digital time series generation device comprises a device identifier, and wherein said device identifier and said encryption key associated with said digital time series generation device are provided to a server prior to said applying;
• and
• providing said plurality of encrypted digital time series samples and said device identifier to said server for decryption using an inverse digital filter array.

A computer program product, comprising a non-transitory processor-readable storage medium having stored therein program code of one or more software programs, wherein the program code when executed by at least one processing platform causes said at least one processing platform to implement the following steps:

• obtaining a plurality of digital time series samples generated by a digital time series generation device;
• applying, by at least one processing device of said digital time series generation device, said plurality of digital time series samples to a digital filter array that combines delayed versions of said digital time series samples using a plurality of coefficients to generate a plurality of encrypted digital time series samples, wherein said plurality of coefficients each comprise a portion of an encryption key associated with said digital time series generation device, wherein said digital time series generation device comprises a device identifier, and wherein said device identifier and said encryption key associated with said digital time series generation device are provided to a server prior to said applying;
• and
• providing said plurality of encrypted digital time series samples and said device identifier to said server for decryption using an inverse digital filter array.