/*
- * Copyright (c) 2015 Samsung Electronics Co., Ltd All Rights Reserved
+ * Copyright (c) 2015 - 2019 Samsung Electronics Co., Ltd All Rights Reserved
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
#include <platform/decider.h>
#include <generic-backend/exception.h>
-#include <sw-backend/store.h>
#ifdef TZ_BACKEND_ENABLED
-#include <tz-backend/store.h>
#include <tz-backend/tz-context.h>
#include <tee_client_api.h>
return str.str();
}
-CryptoBackend chooseCryptoBackend(DataType data,
- const Policy &policy,
- bool encrypted)
+CryptoBackend chooseCryptoBackend(const DataParams& params)
{
#ifdef TZ_BACKEND_ENABLED
+ if (params.size() != 1 && params.size() != 2) {
+ ThrowErr(Exc::Crypto::InternalError, "Invalid number of key parameters provided to decider");
+ }
+
// user directly point proper backend - we will not discuss with it
- if (policy.backend == CKM::PolicyBackend::FORCE_SOFTWARE)
+ if (params[0].policy.backend == CKM::PolicyBackend::FORCE_SOFTWARE)
return CryptoBackend::OpenSSL;
// user directly point proper backend - we will not discuss with it
- if (policy.backend == CKM::PolicyBackend::FORCE_HARDWARE)
+ if (params[0].policy.backend == CKM::PolicyBackend::FORCE_HARDWARE)
return CryptoBackend::TrustZone;
- // For now only software backend supports device encyption key
- // TODO tz-backend could support the master key, but it would require
- // hardcoding a known key ID and querying TA whether the key is
- // reachable
- if (encrypted)
- return CryptoBackend::OpenSSL;
-
- // tz-backend allows only for data binary export
- if (policy.extractable && !data.isBinaryData())
- return CryptoBackend::OpenSSL;
-
- // Use TrustZone only with symmetric keys or unencrypted binary
- // data until asymmetric cryptography is implemented
- if (!data.isSKey() && !data.isBinaryData())
- return CryptoBackend::OpenSSL;
+ if (params.size() == 1) {
+ // For now only software backend supports device encyption key
+ // TODO tz-backend could support the master key, but it would require
+ // hardcoding a known key ID and querying TA whether the key is
+ // reachable
+ if (params[0].encrypted) {
+ return CryptoBackend::OpenSSL;
+ }
+
+ // tz-backend allows only for data binary export
+ if (params[0].policy.extractable && !params[0].data.isBinaryData()) {
+ return CryptoBackend::OpenSSL;
+ }
+
+ // Use TrustZone only with symmetric keys or unencrypted binary
+ // data until asymmetric cryptography is implemented
+ if (!params[0].data.isSKey() && !params[0].data.isBinaryData()) {
+ return CryptoBackend::OpenSSL;
+ }
+ } else if (params.size() == 2) {
+ // extractable private key can only be handled by OpenSSL
+ if (params[0].policy.extractable) {
+ return CryptoBackend::OpenSSL;
+ }
+
+ // ECDSA algorithm is unsupported by GP API 1.0
+ if (params[0].data.isEllipticCurve() || params[1].data.isEllipticCurve()) {
+ return CryptoBackend::OpenSSL;
+ }
+ }
try {
LogDebug("Trying to open TA session...");
LogDebug("...succeeded. Selecting TZ backend.");
return CryptoBackend::TrustZone;
+
#else // TZ_BACKEND_ENABLED
- (void) data;
- (void) policy;
- (void) encrypted;
+ (void) params;
return CryptoBackend::OpenSSL;
#endif // TZ_BACKEND_ENABLED
}
} // namespace
Decider::Decider()
- : m_swStore(new SW::Store(CryptoBackend::OpenSSL))
+ : m_swStore(CryptoBackend::OpenSSL)
#ifdef TZ_BACKEND_ENABLED
- , m_tzStore(new TZ::Store(CryptoBackend::TrustZone))
+ , m_tzStore(CryptoBackend::TrustZone)
#endif
{
}
-GStore &Decider::getStore(const Token &token) const
+GStore &Decider::getStore(const Token &token)
{
return getStore(token.backendId);
};
-GStore &Decider::getStore(CryptoBackend cryptoBackend) const
+GStore &Decider::getStore(CryptoBackend cryptoBackend)
{
GStore *gStore = NULL;
if (cryptoBackend == CryptoBackend::OpenSSL)
- gStore = m_swStore.get();
+ gStore = &m_swStore;
#ifdef TZ_BACKEND_ENABLED
if (cryptoBackend == CryptoBackend::TrustZone)
- gStore = m_tzStore.get();
+ gStore = &m_tzStore;
#endif
if (gStore)
return *gStore;
"Backend not available. BackendId: ", (int)cryptoBackend);
}
-GStore &Decider::getStore(DataType data, const Policy &policy, bool encrypted) const
+GStore &Decider::getStore(DataType data, const Policy &policy, bool encrypted)
+{
+ DataParams params{
+ DataParam(data, policy, encrypted)
+ };
+
+ return getStore(chooseCryptoBackend(params));
+}
+
+GStore &Decider::getStore(const DataParams& params)
{
- return getStore(chooseCryptoBackend(data, policy, encrypted));
+ return getStore(chooseCryptoBackend(params));
}
} // namespace Crypto