Deletion of Stefan Brands

Comment: per David Eppstein. Significant impact clearly meets #1
Stance: keep
Cited policy: Wikipedia:Notability (WP:PROF)

Comment: citations carry him past 
Stance: keep
Cited policy: Wikipedia:Notability (WP:NACADEMIC)

Comment: per . A search of Google scholar is needed when an allegation of notability for a scholar is contested
Stance: keep
Cited policy: Wikipedia:Articles for deletion (WP:BEFORE)

Comment: Google Scholar citation counts of 1085, 937, 799, 405, etc (with most publications single-authored) give a pass of #C1. And coverage of him personally in https://www.wired.com/2000/02/a-patented-approach-to-crypto/ Wired, of his company in http://www.washingtonpost.com/wp-dyn/content/article/2008/03/06/AR2008030603092.html PC World / Washington Post, and of https://books.google.com/books?id=Vh-SCgAAQBAJ&pg=PA298 his inventions in popular-press books also goes a long way towards 
Stance: keep
Cited policy: Wikipedia:Notability (WP:PROF||WP:GNG)