encrypt decrypt php

1function encrypt_decrypt($string, $action = 'encrypt')
2{
3    $encrypt_method = "AES-256-CBC";
4    $secret_key = 'AA74CDCC2BBRT935136HH7B63C27'; // user define private key
5    $secret_iv = '5fgf5HJ5g27'; // user define secret key
6    $key = hash('sha256', $secret_key);
7    $iv = substr(hash('sha256', $secret_iv), 0, 16); // sha256 is hash_hmac_algo
8    if ($action == 'encrypt') {
9        $output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
10        $output = base64_encode($output);
11    } else if ($action == 'decrypt') {
12        $output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
13    }
14    return $output;
15}
16 
17echo "Your Encrypted password is = ". $pwd = encrypt_decrypt('spaceo', 'encrypt');
18echo "Your Decrypted password is = ". encrypt_decrypt($pwd, 'decrypt');
19

1function encryptPass($password) {
2    $sSalt = '20adeb83e85f03cfc84d0fb7e5f4d290';
3    $sSalt = substr(hash('sha256', $sSalt, true), 0, 32);
4    $method = 'aes-256-cbc';
5
6    $iv = chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0);
7
8    $encrypted = base64_encode(openssl_encrypt($password, $method, $sSalt, OPENSSL_RAW_DATA, $iv));
9    return $encrypted;
10}
11
12function decryptPass($password) {
13    $sSalt = '20adeb83e85f03cfc84d0fb7e5f4d290';
14    $sSalt = substr(hash('sha256', $sSalt, true), 0, 32);
15    $method = 'aes-256-cbc';
16
17    $iv = chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0) . chr(0x0);
18
19    $decrypted = openssl_decrypt(base64_decode($password), $method, $sSalt, OPENSSL_RAW_DATA, $iv);
20    return $decrypted;
21}

1function encryptor($action, $string) {
2	$output = FALSE;
3	$encrypt_method = "AES-256-CBC";
4	$secret_key = 'SecretKeyWord';
5	$secret_iv  = 'SecretIV@123GKrQp';
6	// hash
7	$key = hash('sha256', $secret_key);
8	// iv - encrypt method AES-256-CBC expects 16 bytes - else you will get a warning
9	$iv = substr(hash('sha256', $secret_iv), 0, 16);
10	//do the encryption given text/string/number
11	if ($action == 'encrypt') {
12		$output = openssl_encrypt($string, $encrypt_method, $key, 0, $iv);
13		$output = base64_encode($output);
14	} elseif ($action == 'decrypt') {
15		//decrypt the given text/string/number
16		$output = openssl_decrypt(base64_decode($string), $encrypt_method, $key, 0, $iv);
17	}
18	return $output;
19}
20
21function encrypt($data) {
22	return urlencode(self::encryptor('encrypt', self::sanitize($data)));
23}
24
25function decrypt($data) {
26	return self::encryptor('decrypt', urldecode(self::sanitize($data)));
27}
28// Now you can just call encrypt($string) or decrypt($string)
29?>

1function encrypt($plaintext, $password) {
2    $method = "AES-256-CBC";
3    $key = hash('sha256', $password, true);
4    $iv = openssl_random_pseudo_bytes(16);
5
6    $ciphertext = openssl_encrypt($plaintext, $method, $key, OPENSSL_RAW_DATA, $iv);
7    $hash = hash_hmac('sha256', $ciphertext . $iv, $key, true);
8
9    return $iv . $hash . $ciphertext;
10}
11
12function decrypt($ivHashCiphertext, $password) {
13    $method = "AES-256-CBC";
14    $iv = substr($ivHashCiphertext, 0, 16);
15    $hash = substr($ivHashCiphertext, 16, 32);
16    $ciphertext = substr($ivHashCiphertext, 48);
17    $key = hash('sha256', $password, true);
18
19    if (!hash_equals(hash_hmac('sha256', $ciphertext . $iv, $key, true), $hash)) return null;
20
21    return openssl_decrypt($ciphertext, $method, $key, OPENSSL_RAW_DATA, $iv);
22}
23
24//Example usage:
25$encrypted = encrypt('Plaintext string.', 'password'); // this yields a binary string
26
27echo decrypt($encrypted, 'password');
28// decrypt($encrypted, 'wrong password') === null

1//Key
2$key = 'SuperSecretKey';
3
4//To Encrypt:
5$encrypted = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, 'I want to encrypt this', MCRYPT_MODE_ECB);
6
7//To Decrypt:
8$decrypted = mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $encrypted, MCRYPT_MODE_ECB);
9

1$decoded = base64_decode($encoded);
2