{"version":"1.0","type":"rich","provider_name":"EbookNetworking","provider_url":"https://www.ebooknetworking.net","title":"Military Cryptanalysis - Part II: Simpler Varieties of Polyalphabetic Substitution Systems","author_name":"William F. Friedman","thumbnail_url":"https://www.ebooknetworking.net/books/B00/2JC/bigB002JCSU3Q.jpg","thumbnail_width":330,"thumbnail_height":500,"html":"<a href=\"https://www.ebooknetworking.net/books_detail-B002JCSU3Q.html\">Military Cryptanalysis - Part II: Simpler Varieties of Polyalphabetic Substitution Systems</a>","width":400,"height":300}