{"version":"1.0","type":"link","provider_name":"Hardcover","provider_url":"https://hardcover.app","cache_age":86400,"title":"Cryptanalysis: A Study of Ciphers and Their Solution","url":"https://hardcover.app/books/cryptanalysis","author_name":"Helen Fouche Gaines","author_url":"https://hardcover.app/authors/helen-fouche-gaines"}