1 // Copyright 2021 Google LLC
2 //
3 // Licensed under the Apache License, Version 2.0 (the "License");
4 // you may not use this file except in compliance with the License.
5 // You may obtain a copy of the License at
6 //
7 // http://www.apache.org/licenses/LICENSE-2.0
8 //
9 // Unless required by applicable law or agreed to in writing, software
10 // distributed under the License is distributed on an "AS IS" BASIS,
11 // WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 // See the License for the specific language governing permissions and
13 // limitations under the License.
14 //
15 ///////////////////////////////////////////////////////////////////////////////
16
17 #include "tink/hybrid/internal/hpke_key_boringssl.h"
18
19 #include <memory>
20 #include <utility>
21
22 #include "absl/status/status.h"
23 #include "openssl/base.h"
24 #include "openssl/err.h"
25 #include "openssl/hpke.h"
26 #include "tink/hybrid/internal/hpke_util_boringssl.h"
27 #include "tink/util/status.h"
28 #include "tink/util/statusor.h"
29 #include "proto/hpke.pb.h"
30
31 namespace crypto {
32 namespace tink {
33 namespace internal {
34
New(const google::crypto::tink::HpkeKem & kem,absl::string_view recipient_private_key)35 util::StatusOr<std::unique_ptr<HpkeKeyBoringSsl>> HpkeKeyBoringSsl::New(
36 const google::crypto::tink::HpkeKem& kem,
37 absl::string_view recipient_private_key) {
38 std::unique_ptr<HpkeKeyBoringSsl> hpke_key =
39 absl::WrapUnique(new HpkeKeyBoringSsl(kem));
40 util::Status status = hpke_key->Init(recipient_private_key);
41 if (!status.ok()) {
42 return status;
43 }
44 return std::move(hpke_key);
45 }
46
Init(absl::string_view recipient_private_key)47 util::Status HpkeKeyBoringSsl::Init(absl::string_view recipient_private_key) {
48 util::StatusOr<const EVP_HPKE_KEM*> hpke_kem = KemParam(kem_);
49 if (!hpke_kem.ok()) {
50 return hpke_kem.status();
51 }
52 if (!EVP_HPKE_KEY_init(
53 recipient_private_key_.get(), *hpke_kem,
54 reinterpret_cast<const uint8_t*>(recipient_private_key.data()),
55 recipient_private_key.size())) {
56 return util::Status(
57 absl::StatusCode::kUnknown,
58 "Unable to initialize BoringSSL HPKE recipient private key.");
59 }
60 return util::OkStatus();
61 }
62
63 } // namespace internal
64 } // namespace tink
65 } // namespace crypto
66