Tema: Re: flasho gaivinimas - imanoma?
Autorius: terminator
Data: 2009-11-30 23:40:01
http://forum.soft-center.ru/viewtopic.php?t=1379&highlight=crypted+sandisk
>SanDisk Encryption (Crypted) Background
>Most of this information is based on guesses and observations. Encryption is 
>performed by the controller, not U3. The encryption key is unique to the 
>individual drive and is stored in the controller.
>Old Crypto
>These controllers appear to use an unsecure ECB (Electronic Codebook) block 
>cipher that encrypts every 16 bytes with the same key. Due to ECB, if the 
>same 16 bytes of data are encrypted the result will be the same. Removing or 
>Installing U3 appears to change the encryption key. According to SanDisk the 
>crypto is AES-128.
>New Crypto
>Newer SanDisk controllers (>=2008) appear to use different crypto. Instead of 
>the insecure ECB cipher they appear to use a streaming cipher with an IV 
>(initialization vector). I’m guessing the crypto is 128bit AES and the IV is 
>the sector number.
>SanDisk KB article on crypto - Cruzer Micro drives use AES-128 bit while 
>Cruzer Professional and Cruzer Enterprise use AES-256 bit
>Recovery
>Swapping the controller and NAND chip with an identical donor board is one 
>possible way to recover data however this can be difficult on newer BGA and 
>PLCC packages. Repairing damaged components on the failed drive is another 
>option.

VaLco rašė:

> o tai kiekvienas flashas kryptinamas kaip nors unikaliai, ne tuo paciu 
> algoritmu? kaip minejau, turiu minti bandyti sukergti sugedusi flasha su 
> tokiu pat nauju. Aisku, pats to daryti nemoku, bet gal ideja nera bloga?


> terminator wrote:
>> čia užtieks tik 1 piršto -> 
>> http://forum.soft-center.ru/viewtopic.php?t=1481
>> crypted ! crypted! crypted!
>> VaLco rašė:
>> 
>>> esu saziningai zalias sitoj srity, todel nelabai supratau tamstos 
>>> posta. Gal galima "tiems, kur tanke" paaiskinti "na palcach"?
>> 
>>> terminator wrote:
>>>>> todel reikia kaip nors ji atgaivinti -
>>>> kitaip neimanoma
>>>>> arba istraukti info
>>>> tik ne su sandisk ->
>>>> http://forum.soft-center.ru/viewtopic.php?t=1481 -crypted- aišku !
>>>>
>> 
>> 
>>