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Each submitted algorithm must be available worldwide on a royalty free basis during the period of the hash function competition. In order to ensure this and minimize any intellectual property issues, the following series of signed statements are required for a submission to be considered complete: Statement by the Submitter, Statement by Patent (and Patent Application) Owner(s) (if applicable), and Statement by Reference/Optimized Implementations' Owner(s). Note that for the last two statements, separate statements must be completed if multiple individuals are involved.
For full details of the SHA-3 Submission Requirements, see the Federal Register Notice (November 2, 2007).