PHP AES加密学习札记
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2022-05-20 17:17:47
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PHP AES加密学习笔记
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';
printf("128-bit encrypted result:\n%s\n\n",bin2hex($cipherText));
echo '
';echo '
';
}
//--------第一种AES加密方案--------
?>
转载来源：http://www.chilkatsoft.com/p/php_aes.asp
http://www.cnblogs.com/adylee/archive/2007/09/14/893438.html
转载来源：http://blog.csdn.net/shushengsky/archive/2009/12/13/4961861.aspx
';
$key = '1234567890123456';
$content = 'hello';
$padkey = pad2Length($key,16);
$cipher = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
$iv_size = mcrypt_enc_get_iv_size($cipher);
$iv = mcrypt_create_iv($iv_size, MCRYPT_RAND); #IV自动生成？
echo '自动生成iv的长度:'.strlen($iv).'位:'.bin2hex($iv).'
';
if (mcrypt_generic_init($cipher, pad2Length($key,16), $iv) != -1)
{
// PHP pads with NULL bytes if $content is not a multiple of the block size..
$cipherText = mcrypt_generic($cipher,pad2Length($content,16) );
mcrypt_generic_deinit($cipher);
mcrypt_module_close($cipher);
// Display the result in hex.
printf("128-bit encrypted result:\n%s\n\n",bin2hex($cipherText));
print("
");
}
//解密
$mw = bin2hex($cipherText);
$td = mcrypt_module_open(MCRYPT_RIJNDAEL_128, '', MCRYPT_MODE_ECB, '');
if (mcrypt_generic_init($td, $padkey, $iv) != -1)
{
$p_t = mdecrypt_generic($td, hexToStr($mw));
mcrypt_generic_deinit($td);
mcrypt_module_close($td);
$p_t = trimEnd($p_t);
echo '解密:';
print($p_t);
print("
");
print(bin2hex($p_t));
echo '
';
}
//将$text补足$padlen倍数的长度
function pad2Length($text, $padlen){
$len = strlen($text)%$padlen;
$res = $text;
$span = $padlen-$len;
for($i=0; $i
';
$key = '1234567890123456';
$key = pad2Length($key,16);
$iv = 'asdff';
$content = 'hello';
$content = pad2Length($content,16);
$AESed = bin2hex( mcrypt_encrypt(MCRYPT_RIJNDAEL_128,$key,$content,MCRYPT_MODE_ECB,$iv) ); #加密
echo "128-bit encrypted result:".$AESed.'
';
$jiemi = mcrypt_decrypt(MCRYPT_RIJNDAEL_128,$key,hexToStr($AESed),MCRYPT_MODE_ECB,$iv); #解密
echo '解密:';
echo trimEnd($jiemi);
//--------第三种AES加密方案--------
?>
#KEY长度无限制，IV长度必须是block_size的倍数
#如果是MCRYPT_MODE_ECB加密，结果与KEY有关，与IV无关
#如果是MCRYPT_MODE_CBC加密，结果与KEY有关，与IV有关
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