Re: PHP to decode AES

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On Thu, Oct 18, 2012 at 7:19 PM, Rick Dwyer <rpdwyer@xxxxxxxxxxxxx> wrote:
> To correct what I posted below, $code that I'm passing to my function is encrypted… not plain text:
>
> ch7WvaSrCiHLstNeNUp5SkPfPgw0Z8vrNPJT+9vU7jN/C
>
>  --Rick
>
>
> On Oct 18, 2012, at 12:06 PM, Rick Dwyer <rpdwyer@xxxxxxxxxxxxx> wrote:
>
>> Hello all.
>>
>> Has anyone ever tried to decode a JAVA AES/CBC encrypted string with PHP before?
>>
>> I found a tutorial online with the following code to use as starting point, but it fails to return anything readable:
>>
>> $code ='Hello World';
>> $key = 'my key';
>>
>> function decrypt($code, $key) {
>> $key = hex2bin($key);
>> $code = hex2bin($code);
>> $td = mcrypt_module_open("rijndael-128", "", "cbc", "");
>> mcrypt_generic_init($td, $key, "fedcba9876543210");
>> $decrypted = mdecrypt_generic($td, $code);
>> mcrypt_generic_deinit($td);
>> mcrypt_module_close($td);
>> return utf8_encode(trim($decrypted));
>> }
>>
>>
>> function hex2bin($hexdata) {
>> $bindata = "";
>> for ($i = 0; $i < strlen($hexdata); $i += 2) {
>> $bindata .= chr(hexdec(substr($hexdata, $i, 2)));
>> }
>> return $bindata;
>> }
>> echo decrypt($code, $key);
>>
>> The above returns output containing a series of unprintable characters.
>>
>> I thought maybe it was due to $code not being in a hex format, but after converting to hex and resubmitting, I still unprintable characters.
>>
>> Any info is appreciated.
>>
>> --Rick


Your key is not in hexadecimal, could it be Base64?

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