Changes

Whereas the filesystem data in NAND is encrypted using a unique key for every DSi, the stage2 bootloader is identical on every DSi tested so far. The stage2 bootloader binaries are not encrypted with any console-unique keys.

Whereas the filesystem data in NAND is encrypted using a unique key for every DSi, the stage2 bootloader is identical on every DSi tested so far. The stage2 bootloader binaries are not encrypted with any console-unique keys.

Stage1 uses the [[AES_Engine|AES CTR]] to decrypt each ARM9/ARM7 binary, where keyY is from the above signature. The [[AES_Engine]] keyslot used here is the same one used for the shared areas for [[Tad]], therefore the keyX is the same as the one used for that. The following is used for the CTR, where "binblk->binblocksize" is the above binary size aligned to 0x200-bytes:

Stage1 uses the [[AES_Engine]] with mode AES-CTR to decrypt each ARM9/ARM7 binary, where keyY is from the above signature. The [[AES_Engine]] keyslot used here is the same one used for the shared areas for [[Tad]], therefore the keyX is the same as the one used for that. The following is used for the CTR, where "binblk->binblocksize" is the above binary size aligned to 0x200-bytes:

   unsigned int ctr[4];

   unsigned int ctr[4];