本文实例讲述了PHP实现的AES双向加密解密功能。分享给大家供大家参考,具体如下:
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PHP
/*
* Created on 2018-9-1
*
* To change the template for this generated file go to
* Window - Preferences - PHPeclipse - PHP - Code Templates
*/
/**
用法:
Security::encrypt($str,$key);
Security::decrypt($str,$key);
*/
class Security {
public static function encrypt($input,$key) {
$size = mcrypt_get_block_size(MCRYPT_RIJNDAEL_128,MCRYPT_MODE_ECB);
$input = Security::pkcs5_pad($input,$size);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128,'',MCRYPT_MODE_ECB,'');
$iv = mcrypt_create_iv (mcrypt_enc_get_iv_size($td),MCRYPT_RAND);
mcrypt_generic_init($td,$key,$iv);
$data = mcrypt_generic($td,$input);
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$data = base64_encode($data);
return $data;
}
private static function pkcs5_pad ($text,$blocksize) {
$pad = $blocksize - (strlen($text) % $blocksize);
return $text . str_repeat(chr($pad),$pad);
}
public static function decrypt($sStr,$sKey) {
$decrypted= mcrypt_decrypt(
MCRYPT_RIJNDAEL_128,$sKey,base64_decode($sStr),MCRYPT_MODE_ECB
);
$dec_s = strlen($decrypted);
$padding = ord($decrypted[$dec_s-1]);
$decrypted = substr($decrypted,-$padding);
return $decrypted;
}
}
//用法示例:
$str = "www.jb51.cc";
$key = "123456";
echo "原始字符串:".$str."
"; $pwdstr = Security::encrypt($str,$key); echo "加密后:".$pwdstr."
"; $destr = Security::decrypt($pwdstr,$key); echo "解密结果:".$destr; ?>
"; $pwdstr = Security::encrypt($str,$key); echo "加密后:".$pwdstr."
"; $destr = Security::decrypt($pwdstr,$key); echo "解密结果:".$destr; ?>
运行结果:
原始字符串:www.jb51.cc 加密后:O0vbyikeZRVnXueCodfSFw== 解密结果:www.jb51.cc
PS:关于加密解密感兴趣的朋友还可以参考本站在线工具:
文字在线加密解密工具(包含AES、DES、RC4等):
在线MD5/hash/SHA-1/SHA-2/SHA-256/SHA-512/SHA-3/RIPEMD-160加密工具:
在线sha1/sha224/sha256/sha384/sha512加密工具:
更多关于PHP相关内容感兴趣的读者可查看本站专题:《》、《》、《》、《》、《》、《》、《》及《PHP正则表达式用法总结》
希望本文所述对大家PHP程序设计有所帮助。