PHP7 openssl函數替換mcrypt函數加密解密
以下是兩者的區別及openssl替換mcrypt的方法:
替代
$key = '-2i61^'; $iv = '&11r2(*3'; $data = "123456789"; //要加密的資料 if(PHP_VERSION<5.6){ $a= base64_encode(mcrypt_encrypt(MCRYPT_3DES,$key,$data,MCRYPT_MODE_CBC,$iv)); echo 'mcrypt_encrypt:'.$a.'<br>'; //rtrim 移除字串右側的空白字元 $decrypt = rtrim(mcrypt_decrypt(MCRYPT_3DES,$key,base64_decode($a),MCRYPT_MODE_CBC,$iv),''); echo 'mcrypt_decrypt:'.$decrypt.'<br>'; } //使用mcrypt函數來對比 $len = strlen($data); if($len%8){ $data = str_pad($data,$len+8-$len%8,""); }//使用空字元填充字串的右側,使字串位數變為8的倍數 $b = base64_encode(openssl_encrypt($data,'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv)); echo "openssl_encrypt:".$b. '<br>'; $decrypt = openssl_decrypt(base64_decode($b),'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv); echo 'openssl_decrypt:'.$decrypt.'<br>';
執行結果
mcrypt_encrypt:O4/3PssvAkrYtIlhbQEr+g== mcrypt_decrypt:123456789 openssl_encrypt:O4/3PssvAkrYtIlhbQEr+g== openssl_decrypt:123456789
然後來個對比,看看這兩個函數的速度:
$key = '-2i61^'; $iv = '&11r2(*3'; $data = "123456789"; if(PHP_VERSION<5.6){ $start = microtime(true); for($i=0;$i<10000;$i++){ $a= base64_encode(mcrypt_encrypt(MCRYPT_3DES,$key,$data,MCRYPT_MODE_CBC,$iv)); } echo 'mcrypt_time:'; echo microtime(true)-$start.'<br>'; echo 'mcrypt_encrypt'.$a.'<br>'; $decrypt = rtrim(mcrypt_decrypt(MCRYPT_3DES,$key,base64_decode($a),MCRYPT_MODE_CBC,$iv),''); echo 'mcrypt_decrypt'.$decrypt.'<br>'; } $start = microtime(true); for($i=0;$i<10000;$i++){ $len = strlen($data); if($len%8){ $data = str_pad($data,$len+8-$len%8,""); } $b = base64_encode(openssl_encrypt($data,'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv)); } echo "openssl_time:"; echo microtime(true)-$start . '<br>'; echo "openssl_encrypt:".$b. '<br>'; $decrypt = openssl_decrypt(base64_decode($b),'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv); echo 'openssl_decrypt'.$decrypt.'<br>';
結果
mcrypt_time:1.8425710201263 mcrypt_encryptO4/3PssvAkrYtIlhbQEr+g== mcrypt_decrypt123456789 openssl_time:0.023201942443848 openssl_encrypt:O4/3PssvAkrYtIlhbQEr+g== openssl_decrypt123456789
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