Processing of IoT data by intermediaries

Methods and apparatus, including computer program products, implementing and using techniques for processing of data in an intermediary server. Data is received from an Internet of Things (IoT) enabled device. The data includes a readable header and an encrypted payload. An opaque algorithm is selected to process the payload, based on information contained in the header of the data. The selected opaque algorithm processes the encrypted payload of the data, wherein the opaque algorithm is invisible to the intermediary server. The processing includes: decrypting the encrypted payload, applying the opaque algorithm to the decrypted payload, and encrypting the results from processing the decrypted payload by the opaque algorithm. A new readable header is added to the encrypted results. The data, including the new readable header and the encrypted results, is forwarded to a different server, based on the information in the new readable header.