Actually, it is just the opposite. According to wikipedia, SRP was carefully designed to avoid any current patents, and according to this stanford page[1], it i

Actually, it is just the opposite. According to wikipedia, SRP was carefully designed to avoid any current patents, and according to this stanford page[1], it is available commercially and non-commercially under a royalty-free license, along with a BSD-ish-licensed Open Source implementation. [1] http://srp.stanford.edu/whatisit.html http://srp.stanford.edu/whatisit.html