v1.0

Author: Rxflex

index.php examples/decrypt.phpindex.php renamed to examples/decrypt.php

@@ -1,13 +1,17 @@
 <?php
-
 /*
 ██████╗ ██╗███████╗███╗   ███╗
 ██╔══██╗██║██╔════╝████╗ ████║
 ██████╔╝██║█████╗  ██╔████╔██║
 ██╔══██╗██║██╔══╝  ██║╚██╔╝██║
 ██║  ██║██║███████╗██║ ╚═╝ ██║
 ╚═╝  ╚═╝╚═╝╚══════╝╚═╝     ╚═╝
-                              
 */
 
-?>
+require '../riem.php';
+
+$key = 'DPSv8kdvR49ivZj6JG7nJeg76Z3672Fz';
+$riem = new riem;
+$encrypted = file_get_contents('../data.riem');
+$decrypted = $riem->decrypt($encrypted, $key);
+print_r($decrypted);

examples/encrypt-query.php

@@ -0,0 +1,27 @@
+<?php
+/*
+██████╗ ██╗███████╗███╗   ███╗
+██╔══██╗██║██╔════╝████╗ ████║
+██████╔╝██║█████╗  ██╔████╔██║
+██╔══██╗██║██╔══╝  ██║╚██╔╝██║
+██║  ██║██║███████╗██║ ╚═╝ ██║
+╚═╝  ╚═╝╚═╝╚══════╝╚═╝     ╚═╝
+*/
+
+require '../riem.php';
+
+$string = $_GET['string'];
+$key = $_GET['key'];
+if(!$string || !$key) die('Проверьте наличие query GET запросов string и key');
+$riem = new riem;
+$encrypted = $riem->encrypt($string, $key);
+
+
+
+header('Content-Disposition: attachment; filename="data.riem"');
+header('Content-Type: text/plain');
+header('Content-Length: ' . strlen($encrypted));
+header('Connection: close');
+
+
+echo $encrypted;

examples/encrypt.php

@@ -0,0 +1,17 @@
+<?php
+/*
+██████╗ ██╗███████╗███╗   ███╗
+██╔══██╗██║██╔════╝████╗ ████║
+██████╔╝██║█████╗  ██╔████╔██║
+██╔══██╗██║██╔══╝  ██║╚██╔╝██║
+██║  ██║██║███████╗██║ ╚═╝ ██║
+╚═╝  ╚═╝╚═╝╚══════╝╚═╝     ╚═╝
+*/
+
+require '../riem.php';
+
+$string = 'Здесь должно быть написано то что вы хотите зашифровать';
+$key = 'testingkey';
+$riem = new riem;
+$encrypted = $riem->encrypt($string, $key);
+file_put_contents('../data.riem', $encrypted);

riem.php

@@ -0,0 +1,64 @@
+<?php
+
+/*
+██████╗ ██╗███████╗███╗   ███╗
+██╔══██╗██║██╔════╝████╗ ████║
+██████╔╝██║█████╗  ██╔████╔██║
+██╔══██╗██║██╔══╝  ██║╚██╔╝██║
+██║  ██║██║███████╗██║ ╚═╝ ██║
+╚═╝  ╚═╝╚═╝╚══════╝╚═╝     ╚═╝
+*/
+
+
+class riem {
+    function encrypt ($pure_string, $encryption_key) {
+        $cipher     = 'AES-256-CBC';
+        $options    = OPENSSL_RAW_DATA;
+        $hash_algo  = 'sha256';
+        $sha2len    = 32;
+        $ivlen = openssl_cipher_iv_length($cipher);
+        $iv = openssl_random_pseudo_bytes($ivlen);
+        $ciphertext_raw = openssl_encrypt($pure_string, $cipher, $encryption_key, $options, $iv);
+        $hmac = hash_hmac($hash_algo, $ciphertext_raw, $encryption_key, true);
+        return $iv.$hmac.$ciphertext_raw;
+    }
+    function decrypt ($encrypted_string, $encryption_key) {
+        $cipher     = 'AES-256-CBC';
+        $options    = OPENSSL_RAW_DATA;
+        $hash_algo  = 'sha256';
+        $sha2len    = 32;
+        $ivlen = openssl_cipher_iv_length($cipher);
+        $iv = substr($encrypted_string, 0, $ivlen);
+        $hmac = substr($encrypted_string, $ivlen, $sha2len);
+        $ciphertext_raw = substr($encrypted_string, $ivlen+$sha2len);
+        $original_plaintext = openssl_decrypt($ciphertext_raw, $cipher, $encryption_key, $options, $iv);
+        $calcmac = hash_hmac($hash_algo, $ciphertext_raw, $encryption_key, true);
+        if(function_exists('hash_equals')) {
+            if (hash_equals($hmac, $calcmac)) return $original_plaintext;
+        } else {
+            if ($this->hash_equals_custom($hmac, $calcmac)) return $original_plaintext;
+        }
+    }
+    /**
+     * (Опционально)
+     * hash_equals() функция многолифиллинга.
+     */
+    function hash_equals_custom($knownString, $userString) {
+        if (function_exists('mb_strlen')) {
+            $kLen = mb_strlen($knownString, '8bit');
+            $uLen = mb_strlen($userString, '8bit');
+        } else {
+            $kLen = strlen($knownString);
+            $uLen = strlen($userString);
+        }
+        if ($kLen !== $uLen) {
+            return false;
+        }
+        $result = 0;
+        for ($i = 0; $i < $kLen; $i++) {
+            $result |= (ord($knownString[$i]) ^ ord($userString[$i]));
+        }
+        return 0 === $result;
+    }
+}
+