For Tricia: never dull, never boring,
the smartest and bravest person
Iknow
ISBN 10:1-292-15858-1
ISBN 13: 978-1-292-15858-7
10 9
8 7 6 5 4 3 2 1
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Authorized adaptation from the United States edition, entitled Cryptography and Network Security: Principles and
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th
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