week1.php

<?php
/**
 * Created by PhpStorm.
 * User: Igor
 * Date: 26.02.2018
 * Time: 21:23
 */

include "helpers.php";

$ciphers = [
    "315c4eeaa8b5f8aaf9174145bf43e1784b8fa00dc71d885a804e5ee9fa40b16349c146fb778cdf2d3aff021dfff5b403b510d0d0455468aeb98622b137dae857553ccd8883a7bc37520e06e515d22c954eba5025b8cc57ee59418ce7dc6bc41556bdb36bbca3e8774301fbcaa3b83b220809560987815f65286764703de0f3d524400a19b159610b11ef3e",
    "234c02ecbbfbafa3ed18510abd11fa724fcda2018a1a8342cf064bbde548b12b07df44ba7191d9606ef4081ffde5ad46a5069d9f7f543bedb9c861bf29c7e205132eda9382b0bc2c5c4b45f919cf3a9f1cb74151f6d551f4480c82b2cb24cc5b028aa76eb7b4ab24171ab3cdadb8356f",
    "32510ba9a7b2bba9b8005d43a304b5714cc0bb0c8a34884dd91304b8ad40b62b07df44ba6e9d8a2368e51d04e0e7b207b70b9b8261112bacb6c866a232dfe257527dc29398f5f3251a0d47e503c66e935de81230b59b7afb5f41afa8d661cb",
    "32510ba9aab2a8a4fd06414fb517b5605cc0aa0dc91a8908c2064ba8ad5ea06a029056f47a8ad3306ef5021eafe1ac01a81197847a5c68a1b78769a37bc8f4575432c198ccb4ef63590256e305cd3a9544ee4160ead45aef520489e7da7d835402bca670bda8eb775200b8dabbba246b130f040d8ec6447e2c767f3d30ed81ea2e4c1404e1315a1010e7229be6636aaa",
    "3f561ba9adb4b6ebec54424ba317b564418fac0dd35f8c08d31a1fe9e24fe56808c213f17c81d9607cee021dafe1e001b21ade877a5e68bea88d61b93ac5ee0d562e8e9582f5ef375f0a4ae20ed86e935de81230b59b73fb4302cd95d770c65b40aaa065f2a5e33a5a0bb5dcaba43722130f042f8ec85b7c2070",
    "32510bfbacfbb9befd54415da243e1695ecabd58c519cd4bd2061bbde24eb76a19d84aba34d8de287be84d07e7e9a30ee714979c7e1123a8bd9822a33ecaf512472e8e8f8db3f9635c1949e640c621854eba0d79eccf52ff111284b4cc61d11902aebc66f2b2e436434eacc0aba938220b084800c2ca4e693522643573b2c4ce35050b0cf774201f0fe52ac9f26d71b6cf61a711cc229f77ace7aa88a2f19983122b11be87a59c355d25f8e4",
    "32510bfbacfbb9befd54415da243e1695ecabd58c519cd4bd90f1fa6ea5ba47b01c909ba7696cf606ef40c04afe1ac0aa8148dd066592ded9f8774b529c7ea125d298e8883f5e9305f4b44f915cb2bd05af51373fd9b4af511039fa2d96f83414aaaf261bda2e97b170fb5cce2a53e675c154c0d9681596934777e2275b381ce2e40582afe67650b13e72287ff2270abcf73bb028932836fbdecfecee0a3b894473c1bbeb6b4913a536ce4f9b13f1efff71ea313c8661dd9a4ce",
    "315c4eeaa8b5f8bffd11155ea506b56041c6a00c8a08854dd21a4bbde54ce56801d943ba708b8a3574f40c00fff9e00fa1439fd0654327a3bfc860b92f89ee04132ecb9298f5fd2d5e4b45e40ecc3b9d59e9417df7c95bba410e9aa2ca24c5474da2f276baa3ac325918b2daada43d6712150441c2e04f6565517f317da9d3",
    "271946f9bbb2aeadec111841a81abc300ecaa01bd8069d5cc91005e9fe4aad6e04d513e96d99de2569bc5e50eeeca709b50a8a987f4264edb6896fb537d0a716132ddc938fb0f836480e06ed0fcd6e9759f40462f9cf57f4564186a2c1778f1543efa270bda5e933421cbe88a4a52222190f471e9bd15f652b653b7071aec59a2705081ffe72651d08f822c9ed6d76e48b63ab15d0208573a7eef027",
    "466d06ece998b7a2fb1d464fed2ced7641ddaa3cc31c9941cf110abbf409ed39598005b3399ccfafb61d0315fca0a314be138a9f32503bedac8067f03adbf3575c3b8edc9ba7f537530541ab0f9f3cd04ff50d66f1d559ba520e89a2cb2a83",
    "32510ba9babebbbefd001547a810e67149caee11d945cd7fc81a05e9f85aac650e9052ba6a8cd8257bf14d13e6f0a803b54fde9e77472dbff89d71b57bddef121336cb85ccb8f3315f4b52e301d16e9f52f904",
];

$ciphers_bin = [];

foreach ($ciphers as $c) {
    $ciphers_bin[] = hex2bin($c);
}

$key = '';

$res = [];
$result =  array_fill(0,83, '~');
for($i=0; $i< count($ciphers); $i++) {
    for($j=0; $j<count($ciphers); $j++) {
        if ($i != $j && !isset($res[$j][$i]) && !isset($res[$i][$j])) {
            $res[$i][$j] = $res[$j][$i] = xorWithCut($ciphers[$i], $ciphers[$j]);
        }
    }
}

for($i=0; $i< count($ciphers); $i++) {
    $group = [];
    for($j=0; $j<count($ciphers); $j++) {
        if (isset($res[$i][$j])) {
            $printable = getPrintable($res[$i][$j]);

            for ($x=0; $x<strlen($printable); $x++) {
                if (!isset($group[$x])) {
                    $group[$x] = 0;
                }
                if (preg_match("/[,. a-zA-Z]/",$printable[$x])) {
                    $group[$x] += 1;
                }
                echo $printable[$x]."|";
            }
            echo "\n";
        }
    }
//        print_r($group);
        for ($y=0; $y<count($group); $y++) {
            if ($group[$y]==10) {
//echo "$y ".$printable[$y] . "|";
                if ($i<10) {
                    $result[$y] = $printable[$y] ^ chr(32);
                } else {
                    $result[$y] = ' ';
                }
            }
        }
//        print_r($result);
    echo "\n\n";
}
$hex_message = '';

$result[2] = 'e';
$result[7] = 'r';
$result[10] = ' ';
$result[14] = 's';
$result[21] = ($ciphers_bin[0][21] ^ 'b') ^ $ciphers_bin[10][21];
$result[25] = 'e';
$result[26] = 'n';
$result[30] = ($ciphers_bin[0][30] ^ 't') ^ $ciphers_bin[10][30];
$result[31] = ($ciphers_bin[0][31] ^ 'h') ^ $ciphers_bin[10][31];
$result[32] = 'g';
$result[33] = ' ';
$result[34] = ($ciphers_bin[2][34] ^ 'w') ^ $ciphers_bin[10][34];
$result[35] = ' ';
$result[36] = 's';
$result[39] = ($ciphers_bin[2][39] ^ 'c') ^ $ciphers_bin[10][39];
$result[40] = ($ciphers_bin[1][40] ^ 't') ^ $ciphers_bin[10][40];
$result[41] = ($ciphers_bin[0][41] ^ 'c') ^ $ciphers_bin[10][41];
$result[42] = ($ciphers_bin[0][42] ^ 'o') ^ $ciphers_bin[10][42];
$result[49] = ($ciphers_bin[1][49] ^ 'e') ^ $ciphers_bin[10][49];
$result[50] = ($ciphers_bin[1][50] ^ 'c') ^ $ciphers_bin[10][50];
$result[54] = 'e';
$result[81] = 'c';
$result[82] = 'e';

print_r($result);

for ($i=0; $i<count($result); $i++) {
    echo $result[$i];
    echo "|";
    $hex_message .= ($result[$i] != '~') ? bin2hex($result[$i]) : '00';
}
echo "\n\n";

$key = xorWithCut($hex_message, $ciphers[10]);

foreach ($ciphers as $c) {
    $printable = getPrintable(xorWithCut($c, $key));
    for ($x=0; $x<strlen($printable); $x++) {
//        echo $printable[$x]."|";
        echo $printable[$x];
    }
    echo "\n";
}

//print_r($res);