Which Cipher Is Represented By The Following Functionp Pre #8
Which cipher is represented by the following function?</p> <pre><code class="language-c"> public class Cipher { public static String encrypt(String text, final String key) { String res = ""; text = text.toUpperCase(); for (int i = 0, j = 0; i < text.length(); i++) { char c = text.charAt(i); if (c < 'A' || c > 'Z') continue; res += (char) ((c + key.charAt(j) - 2 * 'A') % 26 + 'A'); j = ++j % key.length(); } return res; } </code></pre>
This multiple choice question (MCQ) is related to the book/course
gs gs122 Data Communication and Computer Network.
It can also be found in
gs gs122 Cryptography - Polyalphabetic Cipher - Quiz No.1.
Which cipher is represented by the following function?
public class Cipher { public static String encrypt(String text, final String key) { String res = ""; text = text.toUpperCase(); for (int i = 0, j = 0; i < text.length(); i++) { char c = text.charAt(i); if (c < 'A' || c > 'Z') continue; res += (char) ((c + key.charAt(j) - 2 * 'A') % 26 + 'A'); j = ++j % key.length(); } return res; }
vigenere cipher
hill cipher
keyword cipher
rotor cipher
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