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ams_mitm: fix bis key generation for newer hardware

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This commit is contained in:
Michael Scire 2019-08-29 00:14:23 -07:00
parent 0c3a294cbe
commit 600d68bd1a
1 changed files with 7 additions and 2 deletions
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9
stratosphere/ams_mitm/source/utils.cpp
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@ -148,6 +148,11 @@ void Utils::InitializeThreadFunc(void *args) {
/* Automatically backup BIS keys. */
{
u64 key_generation = 0;
if (GetRuntimeFirmwareVersion() >= FirmwareVersion_500) {
R_ASSERT(splGetConfig(SplConfigItem_NewKeyGeneration, &key_generation));
}
static constexpr u8 const BisKeySources[4][2][0x10] = {
{
{0xF8, 0x3F, 0x38, 0x6E, 0x2C, 0xD2, 0xCA, 0x32, 0xA8, 0x9A, 0xB9, 0xAA, 0x29, 0xBF, 0xC7, 0x48},
@ -172,7 +177,7 @@ void Utils::InitializeThreadFunc(void *args) {
for (size_t partition = 0; partition < 4; partition++) {
if (partition == 0) {
for (size_t i = 0; i < 2; i++) {
R_ASSERT(splFsGenerateSpecificAesKey(BisKeySources[partition][i], 0, i, bis_keys[partition][i]));
R_ASSERT(splFsGenerateSpecificAesKey(BisKeySources[partition][i], key_generation, i, bis_keys[partition][i]));
}
} else {
static constexpr u8 const BisKekSource[0x10] = {
@ -182,7 +187,7 @@ void Utils::InitializeThreadFunc(void *args) {
const u32 option = (partition == 3 && sts::spl::IsRecoveryBoot()) ? 0x4 : 0x1;
u8 access_key[0x10];
R_ASSERT(splCryptoGenerateAesKek(BisKekSource, 0, option, access_key));
R_ASSERT(splCryptoGenerateAesKek(BisKekSource, key_generation, option, access_key));
for (size_t i = 0; i < 2; i++) {
R_ASSERT(splCryptoGenerateAesKey(access_key, BisKeySources[partition][i], bis_keys[partition][i]));
}