Google announced it has launched an open-source tool to help organizations share information and respect data subjects’ privacy rights. The Private Join and Compute multiparty computation uses a cryptographic protocol to allow parties to encrypt identifiers within datasets and join them together. The two groups can perform calculations of the data to find useful information in aggregate. “All inputs (identifiers and their associated data) remain fully encrypted and unreadable throughout the process,” the company wrote in a blog post. “Neither party ever reveals their raw data, but they can still answer the questions at hand using the output of the computation. This end result is the only thing that’s decrypted and shared in the form of aggregated statistics.”
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