elisabetta/cryptoseals
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will it work??

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elisabetta
2026-04-20 22:53:49 +02:00
parent e242ea28b5
commit 080c067f27
1 changed files with 10 additions and 1 deletions
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11
backend/src/main/java/com/crypto/Caesar.java
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@@ -14,11 +14,20 @@ public class Caesar {
public static String[] decode(String ciphertext){ public static String[] decode(String ciphertext){
String alphabet = "abcdefghijklmnopqrstuvwxyz"; String alphabet = "abcdefghijklmnopqrstuvwxyz";
char encoded[] = ciphertext.toCharArray(); char encoded[] = ciphertext.toCharArray();
char decoded[] = new char[ciphertext.length()]; char decoded[] = new char[ciphertext.length()];
String bruteforce[] = new String[26]; String bruteforce[] = new String[26];
for(int key = 0; key < alphabet.length(); key++){ for(int key = 0; key < alphabet.length(); key++){
for(int i = 0; i < ciphertext.length(); i++){ for(int i = 0; i < ciphertext.length(); i++){
decoded[i] = alphabet.charAt(alphabet.indexOf((encoded[i] + key) % 26)); char current = encoded[i];
int pos = alphabet.indexOf(current);
if(pos != -1) {
int newpos = alphabet.indexOf((pos + key) % 26);
decoded[i] = alphabet.charAt(newpos);
} else
decoded[i] = current;
} }
bruteforce[key] = String.valueOf(encoded); bruteforce[key] = String.valueOf(encoded);
} }