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<p>arose out of studies on DES design. , there is a palette of attack techniques against which a block cipher must be secure, in addition to being robust against <a href="page.php?w=brute-force_attack">brute-force attack</a>s.</p>

<p><big>Design</big></p>
<p><big>Iterated block ciphers</big></p>
<p>Most block cipher algorithms are classified as iterated block ciphers which means that they transform fixed-size blocks of <a href="page.php?w=plaintext">plaintext</a> into identically sized blocks of <a href="page.php?w=ciphertext">ciphertext</a>, via the repeated application</p><p>
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