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Implement support for parsing/interacting with NCAs. (#942)

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* fs: implement support for interacting with ncas.

* spl: extend to use virtual keyslots
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SciresM 2020-05-11 15:04:51 -07:00 • committed by GitHub
parent 3a1ccdd919
commit 81f91803ec
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118 changed files with 13301 additions and 405 deletions
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12
stratosphere/loader/source/ldr_meta.cpp
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@ -101,13 +101,7 @@ namespace ams::ldr {
}
const u8 *GetAcidSignatureModulus(u32 key_generation) {
AMS_ASSERT(key_generation <= fssystem::AcidSignatureKeyGenerationMax);
const u32 used_keygen = (key_generation % (fssystem::AcidSignatureKeyGenerationMax + 1));
if (IsDevelopmentForAcidSignatureCheck()) {
return fssystem::AcidSignatureKeyModulusDev[used_keygen];
} else {
return fssystem::AcidSignatureKeyModulusProd[used_keygen];
}
return fssystem::GetAcidSignatureKeyModulus(!IsDevelopmentForAcidSignatureCheck(), key_generation);
}
Result ValidateAcidSignature(Meta *meta) {
@ -122,8 +116,8 @@ namespace ams::ldr {
const size_t sig_size = sizeof(meta->acid->signature);
const u8 *mod = GetAcidSignatureModulus(meta->npdm->signature_key_generation);
const size_t mod_size = fssystem::AcidSignatureKeyModulusSize;
const u8 *exp = fssystem::AcidSignatureKeyExponent;
const size_t exp_size = fssystem::AcidSignatureKeyExponentSize;
const u8 *exp = fssystem::GetAcidSignatureKeyPublicExponent();
const size_t exp_size = fssystem::AcidSignatureKeyPublicExponentSize;
const u8 *msg = meta->acid->modulus;
const size_t msg_size = meta->acid->size;
const bool is_signature_valid = crypto::VerifyRsa2048PssSha256(sig, sig_size, mod, mod_size, exp, exp_size, msg, msg_size);