PHP7 openssl function replaces mcrypt function encryption and decryption method

PHP7 openssl函数替换mcrypt函数加密解密

以下是两者的区别及openssl替换mcrypt的方法：

替代

$key = '-2i61^'; $iv = '&11r2(*3'; $data = "123456789"; //要加密的数据 if(PHP_VERSION<5.6){ $a= base64_encode(mcrypt_encrypt(MCRYPT_3DES,$key,$data,MCRYPT_MODE_CBC,$iv)); echo 'mcrypt_encrypt:'.$a.'
'; //rtrim 移除字符串右侧的空白字符 $decrypt = rtrim(mcrypt_decrypt(MCRYPT_3DES,$key,base64_decode($a),MCRYPT_MODE_CBC,$iv),'\0'); echo 'mcrypt_decrypt:'.$decrypt.'
'; } //使用mcrypt函数来对比 $len = strlen($data); if($len%8){ $data = str_pad($data,$len+8-$len%8,"\0"); }//使用空字符填充字符串的右侧,使字符串位数变为8的倍数 $b = base64_encode(openssl_encrypt($data,'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv)); echo "openssl_encrypt:".$b. '
'; $decrypt = openssl_decrypt(base64_decode($b),'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv); echo 'openssl_decrypt:'.$decrypt.'
';

运行结果

mcrypt_encrypt:O4/3PssvAkrYtIlhbQEr+g== mcrypt_decrypt:123456789 openssl_encrypt:O4/3PssvAkrYtIlhbQEr+g== openssl_decrypt:123456789

然后来个对比，看看这两个函数的速度：

$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)-$start.'
'; echo 'mcrypt_encrypt'.$a.'
'; $decrypt = rtrim(mcrypt_decrypt(MCRYPT_3DES,$key,base64_decode($a),MCRYPT_MODE_CBC,$iv),'\0'); echo 'mcrypt_decrypt'.$decrypt.'
'; } $start = microtime(true); for($i=0;$i<10000;$i++){ $len = strlen($data); if($len%8){ $data = str_pad($data,$len+8-$len%8,"\0"); } $b = base64_encode(openssl_encrypt($data,'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv)); } echo "openssl_time:"; echo microtime(true)-$start . '
'; echo "openssl_encrypt:".$b. '
'; $decrypt = openssl_decrypt(base64_decode($b),'DES-EDE3-CBC',$key,OPENSSL_RAW_DATA|OPENSSL_NO_PADDING,$iv); echo 'openssl_decrypt'.$decrypt.'
';

结果

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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