books.google.ch - Due to the rapid growth of digital communication and electronic data exchange, information security has become a crucial issue in industry, business, and administration. Modern cryptography provides essential techniques for securing information and protecting data. In the first part, this book covers...http://books.google.ch/books/about/Introduction_to_Cryptography.html?hl=de&id=Nnvhz_VqAS4C&q=coin+tosses&utm_source=gb-gplus-shareIntroduction to Cryptography
