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Use OTP in essential backup instead of OTP hash

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This commit is contained in:
d0k3 2017-05-26 01:40:11 +02:00
parent 4984df1c08
commit f920fc47fc
2 changed files with 6 additions and 6 deletions
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4
source/nand/essentials.h
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@ -51,6 +51,6 @@ typedef struct {
u8 padding_frndseed[0x200 - sizeof(LocalFriendCodeSeed)];
u8 nand_cid[0x10];
u8 padding_nand_cid[0x200 - 0x10];
u8 otp_hash[0x20];
u8 padding_otp_hash[0x200 - 0x20];
u8 otp[0x100];
u8 padding_otp[0x200 - 0x100];
} __attribute__((packed)) EssentialBackup;

8
source/nand/nandutil.c
View File

@ -32,7 +32,7 @@ u32 BuildEssentialBackup(const char* path, EssentialBackup* essential) {
{ "movable" , 0x400, 0x140 },
{ "frndseed", 0x600, 0x110 },
{ "nand_cid", 0x800, 0x010 },
{ "otp_hash", 0xA00, 0x020 }
{ "otp" , 0xA00, 0x100 }
};
memset(essential, 0, sizeof(EssentialBackup));
memcpy(essential, filelist, sizeof(filelist));
@ -69,11 +69,11 @@ u32 BuildEssentialBackup(const char* path, EssentialBackup* essential) {
// fill nand cid / otp hash
if (GetNandCid(&(essential->nand_cid)) != 0) return 1;
bool have_otp = (GetOtpHash(&(essential->otp_hash)) == 0);
if (!have_otp) memset(&(filelist[5]), 0, sizeof(ExeFsFileHeader));
if (!IS_UNLOCKED) memset(&(filelist[5]), 0, sizeof(ExeFsFileHeader));
else memcpy(&(essential->otp), (u8*) 0x10012000, 0x100);
// calculate hashes
for (u32 i = 0; i < (have_otp ? 6 : 5); i++)
for (u32 i = 0; i < (IS_UNLOCKED ? 6 : 5); i++)
sha_quick(essential->header.hashes[9-i],
((u8*) essential) + files[i].offset + sizeof(ExeFsHeader),
files[i].size, SHA256_MODE);