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Prerona Dey


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Caesar's cypher is the simplest encryption algorithm. It adds a fixed value to the ASCII (unicode) value of each character of a text. In other words, it shifts the characters. Decrypting a text is simply shifting it back by the same amount, that is,
function y = caesar2(ch, key) v = ' ' : '~'; [~, loc] = ismember(ch, v); v2 = circshift(v, -key); y = v2(loc...

4 years 前 | 0