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exo: fix SE aes-ctr usage in GetSecureData

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This commit is contained in:
Michael Scire 2021-07-16 10:55:49 -07:00
parent bd6155bcb4
commit 0c41489f01
1 changed files with 13 additions and 1 deletions
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14
exosphere/program/source/smc/secmon_smc_aes.cpp
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@ -272,7 +272,19 @@ namespace ams::secmon::smc {
void GetSecureDataImpl(u8 *dst, SecureData which, bool tweak) {
/* Compute the appropriate AES-CTR. */
se::ComputeAes128Ctr(dst, AesKeySize, pkg1::AesKeySlot_Device, SecureDataSource, AesKeySize, GetSecureDataCounter(which), AesKeySize);
{
/* Ensure that the SE sees consistent data. */
hw::FlushDataCache(dst, AesKeySize);
hw::DataSynchronizationBarrierInnerShareable();
/* Perform the appropriate AES operation. */
se::ComputeAes128Ctr(dst, AesKeySize, pkg1::AesKeySlot_Device, SecureDataSource, AesKeySize, GetSecureDataCounter(which), AesKeySize);
hw::DataSynchronizationBarrierInnerShareable();
/* Ensure the CPU sees consistent data. */
hw::FlushDataCache(dst, AesKeySize);
hw::DataSynchronizationBarrierInnerShareable();
}
/* Tweak, if we should. */
if (tweak) {