The history of this patent goes back very far:
- One of the first software patents was the LANPAR spreadsheet compiler, filed in 1970 and granted in 1983: the patent for “The Secure Spreadsheet” is also written as a compiler.
- In 1982, Andrew C. Yao publishes the first “Protocols for secure computation”.
- In 1997, Nick Szabo illustrated for the first time in “The God Protocols” the basics of a spreadsheet enabled for secure computation. Even today, the spreadsheet is the most used calculation program in the world, although always lacking advanced cryptographic functionalities.
- After thousands of publications and more than $100MM in research projects by the cryptographic community, David Cerezo Sánchez filed in 2014 the first patent describing all the details to efficiently enable spreadsheets with secure computation techniques.
- In 2017, the first version of “The Secure Spreadsheet” was published, closing a 20-year-old problem.
This patent exemplifies our continued focus on producing the most secure software in the world as our top priority, proven unbreakable by mathematical proofs.