Following in the tradition of The Timesâ€™ authoritative, highest-quality, challenging cryptic crosswords, this latest collection offers an enjoyable and stimulating way to while away your free time and exercise the grey matter with intriguing clues and complex wordplay. Enjoy pitting your wits against the crafty elegance of the worldâ€™s best crossword setters Addictive, taxing and compelling, this book is packed with 200 high-quality puzzles chosen by former Times Crossword Editors. Puzzles taken from previously published titles Times Cryptic Crossword Books 7, 8 and 9.
This book is a clear and informative introduction to cryptography and data protection - subjects of considerable social and political importance. It explains what algorithms do, how they are used, the risks associated with using them, and why governments should be concerned. Important areas are highlighted, such as Stream Ciphers, block ciphers, public key algorithms, digital signatures, and applications such as e-commerce. This book highlights the explosive impact of cryptography on modern society, with, for example, the evolution of the internet and the introduction of more sophisticated banking methods. ABOUT THE SERIES: The Very Short Introductions series from Oxford University Press contains hundreds of titles in almost every subject area. These pocket-sized books are the perfect way to get ahead in a new subject quickly. Our expert authors combine facts, analysis, perspective, new ideas, and enthusiasm to make interesting and challenging topics highly readable.
Test your wits with a cryptogram for every day of the year Start the year with this one: FXA SRZ YNJIJS UC SRZ YZXYUT VOXEEZT AUHI RZXIS XTE TUHIJYR AUHI YUHO. (MAY THE SPIRIT OF THE SEASON GLADDEN YOUR HEART AND NOURISH YOUR SOUL). Solutions are cleverly scattered to prevent easy cheating. 128 pages, 5 3/8 x 8 1/4.
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