PHP Mcrypt 和 Base64 编码解码 return 奇怪的字符

Question

我使用以下代码对一个简单的字符串进行编码和解码"abcdefg123"

function encryptIt( $q ) {
    $cryptKey  = 'fkEir8eu0ajiOo93q32txY';
    $qEncoded      = base64_encode( mcrypt_encrypt( MCRYPT_RIJNDAEL_256, md5( $cryptKey ), $q, MCRYPT_MODE_CBC, md5( md5( $cryptKey ) ) ) );
    return( $qEncoded );
}

function decryptIt( $q ) {
    $cryptKey  = 'fkEir8eu0ajiOo93q32txY';
    $qDecoded      = rtrim( mcrypt_decrypt( MCRYPT_RIJNDAEL_256, md5( $cryptKey ), base64_decode( $q ), MCRYPT_MODE_CBC, md5( md5( $cryptKey ) ) ), "[=12=]");
    return( $qDecoded );
}

我被编码了A/ziTyvagw4vgKbIOOdvP1zy15p0mkY6hIYSJcE2Kq4= 但解码 returns 8�M�j�3l0�q�M�#�萌T��@�m�Q

我已经在 Whosebug 上阅读了其他解决方案，例如 utf8_decode() 和 rawurlencode()，但似乎仍然无法正常工作。我正在使用 php 7.

Answer 1

试试这个....

define('ENCRYPTION_KEY', md5("fkEir8eu0ajiOo93q32txY"));
// Encrypt Function
function mc_encrypt($encrypt, $key){
    $encrypt = serialize($encrypt);
    $iv = mcrypt_create_iv(mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC), MCRYPT_DEV_URANDOM);
    $key = pack('H*', $key);
    $mac = hash_hmac('sha256', $encrypt, substr(bin2hex($key), -32));
    $passcrypt = mcrypt_encrypt(MCRYPT_RIJNDAEL_256, $key, $encrypt.$mac, MCRYPT_MODE_CBC, $iv);
    $encoded = base64_encode($passcrypt).'|'.base64_encode($iv);
    return $encoded;
}
// Decrypt Function
function mc_decrypt($decrypt, $key){
    $decrypt = explode('|', $decrypt.'|');
    $decoded = base64_decode($decrypt[0]);
    $iv = base64_decode($decrypt[1]);
    if(strlen($iv)!==mcrypt_get_iv_size(MCRYPT_RIJNDAEL_256, MCRYPT_MODE_CBC)){ return false; }
    $key = pack('H*', $key);
    $decrypted = trim(mcrypt_decrypt(MCRYPT_RIJNDAEL_256, $key, $decoded, MCRYPT_MODE_CBC, $iv));
    $mac = substr($decrypted, -64);
    $decrypted = substr($decrypted, 0, -64);
    $calcmac = hash_hmac('sha256', $decrypted, substr(bin2hex($key), -32));
    if($calcmac!==$mac){ return false; }
    $decrypted = unserialize($decrypted);
    return $decrypted;
}
$data = 'abcdefg123';
$encrypted_data = mc_encrypt($data, ENCRYPTION_KEY);
echo 'Data to be Encrypted: ' . $data . '<br/>';
echo 'Encrypted Data: ' . $encrypted_data . '<br/>';
echo 'Decrypted Data: ' . mc_decrypt($encrypted_data, ENCRYPTION_KEY) . '</br>';

PHP Mcrypt 和 Base64 编码解码 return 奇怪的字符

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