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Merge OEMCrypto KDF and usage functions

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Since KDF functions are only used right before specific functions, this
merges them to simplify internal state within OEMCrypto.

Fixes: 299527712
Change-Id: I426cfcdc102bd73cf65cd809b213da2474f44b34
This commit is contained in:
Jacob Trimble
2023-04-13 18:37:26 +00:00
committed by Robert Shih
parent b04fda2908
commit 488a4647db
21 changed files with 567 additions and 634 deletions
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20
libwvdrmengine/oemcrypto/test/oemcrypto_cast_test.h
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@@ -51,26 +51,6 @@ class OEMCryptoLoadsCertificateAlternates : public OEMCryptoLoadsCertificate {
licenseRequest, signature.data(), signature_length, scheme));
}
void DisallowDeriveKeys() {
Session s;
ASSERT_NO_FATAL_FAILURE(s.open());
ASSERT_NO_FATAL_FAILURE(s.LoadWrappedRsaDrmKey(wrapped_drm_key_));
s.GenerateNonce();
vector<uint8_t> session_key;
vector<uint8_t> enc_session_key;
ASSERT_NO_FATAL_FAILURE(s.SetRsaPublicKeyFromPrivateKeyInfo(
encoded_rsa_key_.data(), encoded_rsa_key_.size()));
ASSERT_TRUE(s.GenerateRsaSessionKey(&session_key, &enc_session_key));
vector<uint8_t> mac_context;
vector<uint8_t> enc_context;
s.FillDefaultContext(&mac_context, &enc_context);
ASSERT_NE(OEMCrypto_SUCCESS,
OEMCrypto_DeriveKeysFromSessionKey(
s.session_id(), enc_session_key.data(),
enc_session_key.size(), mac_context.data(),
mac_context.size(), enc_context.data(), enc_context.size()));
}
// If force is true, we assert that the key loads successfully.
void LoadCastCertificateKey(bool force) {
if (!wvoec::global_features.cast_receiver) {