49 lines
1.8 KiB
C++
49 lines
1.8 KiB
C++
/*
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* Copyright 2021 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#include <keymaster/km_openssl/curve25519_key.h>
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#include <openssl/curve25519.h>
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#include <openssl/evp.h>
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namespace keymaster {
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bool IsEd25519Key(const AuthorizationSet& hw_enforced, const AuthorizationSet& sw_enforced) {
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AuthProxy proxy(hw_enforced, sw_enforced);
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return (proxy.Contains(TAG_ALGORITHM, KM_ALGORITHM_EC) &&
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proxy.Contains(TAG_EC_CURVE, KM_EC_CURVE_CURVE_25519) &&
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(proxy.Contains(TAG_PURPOSE, KM_PURPOSE_SIGN) ||
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proxy.Contains(TAG_PURPOSE, KM_PURPOSE_ATTEST_KEY)));
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}
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bool IsX25519Key(const AuthorizationSet& hw_enforced, const AuthorizationSet& sw_enforced) {
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AuthProxy proxy(hw_enforced, sw_enforced);
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return (proxy.Contains(TAG_ALGORITHM, KM_ALGORITHM_EC) &&
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proxy.Contains(TAG_EC_CURVE, KM_EC_CURVE_CURVE_25519) &&
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proxy.Contains(TAG_PURPOSE, KM_PURPOSE_AGREE_KEY));
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}
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bool Curve25519Key::EvpToInternal(const EVP_PKEY* pkey) {
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return (EvpKeyToKeyMaterial(pkey, &key_material_) == KM_ERROR_OK);
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}
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EVP_PKEY_Ptr Curve25519Key::InternalToEvp() const {
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const uint8_t* tmp = key_material().key_material;
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return EVP_PKEY_Ptr(
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d2i_PrivateKey(evp_key_type(), nullptr /* pkey */, &tmp, key_material().key_material_size));
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}
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} // namespace keymaster
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