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Fix user_generate_specific_aes_key wrong register use

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This commit is contained in:
TuxSH 2018-03-07 15:50:50 +01:00
parent 4f0e8b8467
commit 54fac349f2
1 changed files with 9 additions and 4 deletions
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13
exosphere/src/smc_user.c
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@ -280,14 +280,19 @@ uint32_t user_generate_specific_aes_key(smc_args_t *args) {
wrapped_key[0] = args->X[1];
wrapped_key[1] = args->X[2];
if (args->X[4] > MASTERKEY_REVISION_MAX) {
master_key_rev = args->X[3];
if (mkey_get_revision() < MASTERKEY_REVISION_400_CURRENT) {
master_key_rev &= MASK(32);
}
if (master_key_rev > MASTERKEY_REVISION_MAX) {
return 2;
}
master_key_rev = (unsigned int)(args->X[4]);
if (args->X[3] > 1) {
if (args->X[4] > 1) {
return 2;
}
should_mask = args->X[3] != 0;
should_mask = args->X[4] != 0;
unsigned int keyslot;