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Improved sector0x96 crypto check

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This commit is contained in:
d0k3 2017-02-03 02:21:55 +01:00
parent c6b6e649b8
commit 2bb0888973
1 changed files with 11 additions and 6 deletions
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17
source/nand/nand.c
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@ -20,6 +20,11 @@ static const u8 slot0x24KeyY_sha256[0x20] = { // hash for slot0x24KeyY (16 byte)
0xD4, 0x40, 0x92, 0x25, 0xD1, 0x9D, 0xA2, 0xDE, 0xCD, 0xC7, 0x12, 0x97, 0x08, 0x46, 0x54, 0xB7 0xD4, 0x40, 0x92, 0x25, 0xD1, 0x9D, 0xA2, 0xDE, 0xCD, 0xC7, 0x12, 0x97, 0x08, 0x46, 0x54, 0xB7
}; };
static const u8 slot0x11Key95_sha256[0x20] = { // slot0x11Key95 hash (first 16 byte of sector0x96)
0xBA, 0xC1, 0x40, 0x9C, 0x6E, 0xE4, 0x1F, 0x04, 0xAA, 0xC4, 0xE2, 0x09, 0x5C, 0xE9, 0x4F, 0x78,
0x6C, 0x78, 0x5F, 0xAC, 0xEC, 0x7E, 0xC0, 0x11, 0x26, 0x9D, 0x4E, 0x47, 0xB3, 0x64, 0xC4, 0xA5
};
static const u8 nand_magic_n3ds[0x60] = { // NCSD NAND header N3DS magic static const u8 nand_magic_n3ds[0x60] = { // NCSD NAND header N3DS magic
0x4E, 0x43, 0x53, 0x44, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x4E, 0x43, 0x53, 0x44, 0x00, 0x00, 0x28, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x04, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x02, 0x02, 0x02, 0x03, 0x00, 0x00, 0x00, 0x01, 0x04, 0x03, 0x03, 0x01, 0x00, 0x00, 0x00, 0x01, 0x02, 0x02, 0x02, 0x03, 0x00, 0x00, 0x00,
@ -113,7 +118,8 @@ bool InitNandCrypto(void)
u32 NandCid[4]; u32 NandCid[4];
u8 shasum[32]; u8 shasum[32];
sdmmc_get_cid( 1, NandCid); sdmmc_sdcard_init();
sdmmc_get_cid(1, NandCid);
sha_quick(shasum, (u8*) NandCid, 16, SHA256_MODE); sha_quick(shasum, (u8*) NandCid, 16, SHA256_MODE);
memcpy(CtrNandCtr, shasum, 16); memcpy(CtrNandCtr, shasum, 16);
sha_quick(shasum, (u8*) NandCid, 16, SHA1_MODE); sha_quick(shasum, (u8*) NandCid, 16, SHA1_MODE);
@ -168,9 +174,7 @@ bool InitNandCrypto(void)
bool CheckSlot0x05Crypto(void) bool CheckSlot0x05Crypto(void)
{ {
// step #1 - check the slot0x05KeyY SHA-256 // step #1 - check the slot0x05KeyY SHA-256
u8 shasum[32]; if (sha_cmp(slot0x05KeyY_sha256, slot0x05KeyY, 16, SHA256_MODE) == 0)
sha_quick(shasum, slot0x05KeyY, 16, SHA256_MODE);
if (memcmp(shasum, slot0x05KeyY_sha256, 32) == 0)
return true; return true;
// step #2 - check actual CTRNAND magic // step #2 - check actual CTRNAND magic
@ -187,8 +191,9 @@ bool CheckSlot0x05Crypto(void)
bool CheckSector0x96Crypto(void) bool CheckSector0x96Crypto(void)
{ {
const u8 zeroes[32] = { 0 }; u8 buffer[0x200];
return !(memcmp(OtpSha256, zeroes, 32) == 0); ReadNandSectors(buffer, 0x96, 1, 0x11, NAND_SYSNAND);
return (sha_cmp(slot0x11Key95_sha256, buffer, 16, SHA256_MODE) == 0);
} }
bool CheckA9lh(void) bool CheckA9lh(void)