Detailed explanation of the method of converting mcrypt to openssl in php7.2

mcrypt has been deprecated in php7.2.

Replace it with openssl.

For example

public function desEncrypt($str,$key) {
     $iv = $key;
         $size = mcrypt_get_block_size ( MCRYPT_DES, MCRYPT_MODE_CBC );
         $str = $this->_pkcs5_pad ( $str, $size );
         return strtoupper( bin2hex( mcrypt_encrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_CBC, $iv ) ) );
     }
     
public function desDecrypt($str,$key) {
     $iv = $key;
         $strBin = $this->_hex2bin( strtolower( $str ) );
         $str = mcrypt_decrypt( MCRYPT_DES, $key, $strBin, MCRYPT_MODE_CBC, $iv );
         $str = $this->_pkcs5_unpad( $str );
         return $str;
     }
 
private function _pkcs5_pad($text,$block=8){
         $pad = $block - (strlen($text) % $block);
         return $text . str_repeat(chr($pad), $pad);
     }
     
private function _pkcs5_unpad($text) {
        $pad = ord($text{strlen($text)-1});
        if ($pad > strlen($text)) return $text;
        if (strspn($text, chr($pad), strlen($text) - $pad) != $pad) return $text;
        return substr($text, 0, -1 * $pad);
     }

After replacement:

//要改的加密
    public function desEncrypt($str,$key) {
      //   $b = openssl_get_cipher_methods();
      //   echo &#39;<pre class="brush:php;toolbar:false">&#39;;
      //   print_r($b);
     $iv = $key;
      //    $size = mcrypt_get_block_size ( MCRYPT_DES, MCRYPT_MODE_CBC );
      //    var_dump($size);exit;
      //    $str = $this->_pkcs5_pad ( $str, $size );
 
         // return strtoupper( bin2hex( mcrypt_encrypt(MCRYPT_DES, $key, $str, MCRYPT_MODE_CBC, $iv ) ) );
        $data = openssl_encrypt($str,"DES-CBC",$key,OPENSSL_RAW_DATA,$iv);
        $data = strtolower(bin2hex($data));
        return $data;
     }
     
    //要改的解密
    public function desDecrypt($str,$key) {
     $iv = $key;
      //    $strBin = $this->_hex2bin( strtolower( $str ) );
      //    $str = mcrypt_decrypt( MCRYPT_DES, $key, $strBin, MCRYPT_MODE_CBC, $iv );
      //    $str = $this->_pkcs5_unpad( $str );
      //    return $str;
        return openssl_decrypt (hex2bin($str), &#39;DES-CBC&#39;, $key, OPENSSL_RAW_DATA,$iv);
     }

These are available online. In the process of using it, the author cannot know which openssl corresponds because he uses MCRYPT_DES. Encryption method, so I found openssl_get_cipher_methods() through the manual; this method can find all the methods supported by openssl and replace them.

echo &#39;<pre class="brush:php;toolbar:false">&#39;;
$a = openssl_get_cipher_methods();
print_r($a);
 
Array
(
    [0] => AES-128-CBC
    [1] => AES-128-CFB
    [2] => AES-128-CFB1
    [3] => AES-128-CFB8
    [4] => AES-128-CTR
    [5] => AES-128-ECB
    [6] => AES-128-OFB
    [7] => AES-128-XTS
    [8] => AES-192-CBC
    [9] => AES-192-CFB
    [10] => AES-192-CFB1
    [11] => AES-192-CFB8
    [12] => AES-192-CTR
    [13] => AES-192-ECB
    [14] => AES-192-OFB
    [15] => AES-256-CBC
    [16] => AES-256-CFB
    [17] => AES-256-CFB1
    [18] => AES-256-CFB8
    [19] => AES-256-CTR
    [20] => AES-256-ECB
    [21] => AES-256-OFB
    [22] => AES-256-XTS
    [23] => BF-CBC
    [24] => BF-CFB
    [25] => BF-ECB
    [26] => BF-OFB
    [27] => CAMELLIA-128-CBC
    [28] => CAMELLIA-128-CFB
    [29] => CAMELLIA-128-CFB1
    [30] => CAMELLIA-128-CFB8
    [31] => CAMELLIA-128-ECB
    [32] => CAMELLIA-128-OFB
    [33] => CAMELLIA-192-CBC
    [34] => CAMELLIA-192-CFB
    [35] => CAMELLIA-192-CFB1
    [36] => CAMELLIA-192-CFB8
    [37] => CAMELLIA-192-ECB
    [38] => CAMELLIA-192-OFB
    [39] => CAMELLIA-256-CBC
    [40] => CAMELLIA-256-CFB
    [41] => CAMELLIA-256-CFB1
    [42] => CAMELLIA-256-CFB8
    [43] => CAMELLIA-256-ECB
    [44] => CAMELLIA-256-OFB
    [45] => CAST5-CBC
    [46] => CAST5-CFB
    [47] => CAST5-ECB
    [48] => CAST5-OFB
    [49] => DES-CBC
    [50] => DES-CFB
    [51] => DES-CFB1
    [52] => DES-CFB8
    [53] => DES-ECB
    [54] => DES-EDE
    [55] => DES-EDE-CBC
    [56] => DES-EDE-CFB
    [57] => DES-EDE-OFB
    [58] => DES-EDE3
    [59] => DES-EDE3-CBC
    [60] => DES-EDE3-CFB
    [61] => DES-EDE3-CFB1
    [62] => DES-EDE3-CFB8
    [63] => DES-EDE3-OFB
    [64] => DES-OFB
    [65] => DESX-CBC
    [66] => IDEA-CBC
    [67] => IDEA-CFB
    [68] => IDEA-ECB
    [69] => IDEA-OFB
    [70] => RC2-40-CBC
    [71] => RC2-64-CBC
    [72] => RC2-CBC
    [73] => RC2-CFB
    [74] => RC2-ECB
    [75] => RC2-OFB
    [76] => RC4
    [77] => RC4-40
    [78] => RC4-HMAC-MD5
    [79] => SEED-CBC
    [80] => SEED-CFB
    [81] => SEED-ECB
    [82] => SEED-OFB
    [83] => aes-128-cbc
    [84] => aes-128-cfb
    [85] => aes-128-cfb1
    [86] => aes-128-cfb8
    [87] => aes-128-ctr
    [88] => aes-128-ecb
    [89] => aes-128-gcm
    [90] => aes-128-ofb
    [91] => aes-128-xts
    [92] => aes-192-cbc
    [93] => aes-192-cfb
    [94] => aes-192-cfb1
    [95] => aes-192-cfb8
    [96] => aes-192-ctr
    [97] => aes-192-ecb
    [98] => aes-192-gcm
    [99] => aes-192-ofb
    [100] => aes-256-cbc
    [101] => aes-256-cfb
    [102] => aes-256-cfb1
    [103] => aes-256-cfb8
    [104] => aes-256-ctr
    [105] => aes-256-ecb
    [106] => aes-256-gcm
    [107] => aes-256-ofb
    [108] => aes-256-xts
    [109] => bf-cbc
    [110] => bf-cfb
    [111] => bf-ecb
    [112] => bf-ofb
    [113] => camellia-128-cbc
    [114] => camellia-128-cfb
    [115] => camellia-128-cfb1
    [116] => camellia-128-cfb8
    [117] => camellia-128-ecb
    [118] => camellia-128-ofb
    [119] => camellia-192-cbc
    [120] => camellia-192-cfb
    [121] => camellia-192-cfb1
    [122] => camellia-192-cfb8
    [123] => camellia-192-ecb
    [124] => camellia-192-ofb
    [125] => camellia-256-cbc
    [126] => camellia-256-cfb
    [127] => camellia-256-cfb1
    [128] => camellia-256-cfb8
    [129] => camellia-256-ecb
    [130] => camellia-256-ofb
    [131] => cast5-cbc
    [132] => cast5-cfb
    [133] => cast5-ecb
    [134] => cast5-ofb
    [135] => des-cbc
    [136] => des-cfb
    [137] => des-cfb1
    [138] => des-cfb8
    [139] => des-ecb
    [140] => des-ede
    [141] => des-ede-cbc
    [142] => des-ede-cfb
    [143] => des-ede-ofb
    [144] => des-ede3
    [145] => des-ede3-cbc
    [146] => des-ede3-cfb
    [147] => des-ede3-cfb1
    [148] => des-ede3-cfb8
    [149] => des-ede3-ofb
    [150] => des-ofb
    [151] => desx-cbc
    [152] => id-aes128-GCM
    [153] => id-aes192-GCM
    [154] => id-aes256-GCM
    [155] => idea-cbc
    [156] => idea-cfb
    [157] => idea-ecb
    [158] => idea-ofb
    [159] => rc2-40-cbc
    [160] => rc2-64-cbc
    [161] => rc2-cbc
    [162] => rc2-cfb
    [163] => rc2-ecb
    [164] => rc2-ofb
    [165] => rc4
    [166] => rc4-40
    [167] => rc4-hmac-md5
    [168] => seed-cbc
    [169] => seed-cfb
    [170] => seed-ecb
    [171] => seed-ofb
)

Hope it is useful to you.

For more related PHP7 articles, please visit: "PHP7" Tutorial

The above is the detailed content of Detailed explanation of the method of converting mcrypt to openssl in php7.2. For more information, please follow other related articles on the PHP Chinese website!