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<p>useful as <a href="page.php?w=initialization_vector">initialization vector</a>s and in <a href="page.php?w=cryptographic_hash_functions">cryptographic hash functions</a>.</p>

<p><big> Definition </big></p>
<p>A nonce is an arbitrary number used only once in a cryptographic communication, in the spirit of a <a href="page.php?w=nonce_word">nonce word</a>. They are often <a href="page.php?w=randomness">random</a> or <a href="page.php?w=pseudo-random">pseudo-random</a> numbers. Many nonces also include a <a href="page.php?w=timestamp">timestamp</a> to ensure</p><p>
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