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我使用RNCryptor在iOS中加密消息,然後使用PHP解密。但是,解密字符串中的特殊字符消失。RNCryptor iOS/PHP和特殊字符
如何加密iOS中
-(NSData *)encryptThis:(NSString *)str
{
NSString *key = @"mysuper32bitkey";
NSError *error = nil;
NSData *data = [str dataUsingEncoding:NSUTF8StringEncoding];
NSData *encryptedData = [RNEncryptor encryptData:data
withSettings:kRNCryptorAES256Settings
password:key
error:&error];
return encryptedData;
}
如何解密PHP
$b64_data = $message;
$password = "mysuper32bitkey"
// back to binary
$bin_data = $message;// message already in binary. No need for -> mb_convert_encoding($b64_data, "UTF-8", "BASE64");
// extract salt
$salt = substr($bin_data, 2, 8);
// extract HMAC salt
$hmac_salt = substr($bin_data, 10, 8);
// extract IV
$iv = substr($bin_data, 18, 16);
// extract data
$data = substr($bin_data, 34, strlen($bin_data) - 34 - 32);
// extract HMAC
$hmac = substr($bin_data, strlen($bin_data) - 32);
// make HMAC key
$hmac_key = pbkdf2('SHA1', $password, $hmac_salt, 10000, 32, true);
// make HMAC hash
$hmac_hash = hash_hmac('sha256', $data , $hmac_key, true);
// check if HMAC hash matches HMAC
if($hmac_hash != $hmac)
echo "false";
// make data key
$key = pbkdf2('SHA1', $password, $salt, 10000, 32, true);
// decrypt
$ret = mcrypt_decrypt(MCRYPT_RIJNDAEL_128, $key, $data, MCRYPT_MODE_CBC, $iv);
echo trim(preg_replace('/[\x00-\x08\x0B\x0C\x0E-\x1F\x80-\xFF]/u', '', $ret));
的事情是,如果我加密「Agresión 「在iOS中,PHP只返回s「Agresin」。爲什麼它不解密「ó」?我認爲dataUsingEncoding:NSUTF8StringEncoding將保留特殊字符...我應該使用另一種類型的編碼?
所以它應該是:echo trim(preg_replace('/ [\ x00- \ x08 \ x0B \ x0C \ x0E- \ x1F/u','',$ ret)); ?刪除\ x80- \ xFF – GabCas 2013-03-14 21:32:58
爲什麼你會在這裏刪除任何字符? – 2013-03-19 18:23:54
這是一個沒有評論的例子。我意識到現在我正在刪除很多unicode字符。 – GabCas 2013-03-20 13:44:55