Hi Hackborn I do not think it's device-level work or only porting issue, but the understand to Android recovery feature. Anybody familiar with recovery, can help?
Thanks. On Jul 24, 2:25 pm, Dianne Hackborn <[email protected]> wrote: > Hi, questions about device-level work should be posted to android-porting. > Thanks. > > > > On Thu, Jul 23, 2009 at 11:06 PM, Xinyu Chen <[email protected]> wrote: > > > Hi > > > I'm doing enhancement to Android recovery feature for Freescale's i.MX > > platform. > > Main target is to add EXT3 partition support based on the original MTD > > partition, and let android rootfs running on movi-nand or SD card can > > do recovery. > > > As the normal recovery procedure, recovery service unpacks the > > update.zip after reading update command. It reads the public key in / > > res/keys from rootfs into a structure before apply the update-script: > > typedef struct RSAPublicKey { > > int len; /* Length of n[] in number of uint32_t > > */ > > uint32_t n0inv; /* -1 / n[0] mod 2^32 */ > > uint32_t n[RSANUMWORDS]; /* modulus as little endian array */ > > uint32_t rr[RSANUMWORDS]; /* R^2 as little endian array */ > > } RSAPublicKey; > > This public key is used to decrypt the .SF file's signature stored > > in .RSA file, and compare to the .SF file's SHA-1 digest. This makes > > sure .SF file is correct. > > So in our recovery implement, we will have own keystore, and create > > own /res/keys. > > But I can not find the res/keys file in the android source or, in the > > recovery image which used to hack G1 to get root permission. > > > My question is: > > 1. Does the hacked recovery rootfs image remove this verification > > codes? (As I dump the recovery binary, seems no "res/keys" symbol) > > 2. What's key file's format, and how to generate it from a > > certification file? > > > Thanks. > > > BR > > Xinyu Chen > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~----------~----~----~----~------~----~------~--~---
