1 // Copyright 2017 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 #ifndef TINK_AEAD_AES_CTR_HMAC_AEAD_KEY_MANAGER_H_ 17 #define TINK_AEAD_AES_CTR_HMAC_AEAD_KEY_MANAGER_H_ 18 19 #include <stdint.h> 20 21 #include <memory> 22 #include <string> 23 24 #include "absl/memory/memory.h" 25 #include "absl/strings/str_cat.h" 26 #include "tink/aead.h" 27 #include "tink/core/key_type_manager.h" 28 #include "tink/core/template_util.h" 29 #include "tink/internal/fips_utils.h" 30 #include "tink/util/constants.h" 31 #include "tink/util/status.h" 32 #include "tink/util/statusor.h" 33 #include "proto/aes_ctr_hmac_aead.pb.h" 34 #include "proto/tink.pb.h" 35 36 namespace crypto { 37 namespace tink { 38 39 class AesCtrHmacAeadKeyManager 40 : public KeyTypeManager<google::crypto::tink::AesCtrHmacAeadKey, 41 google::crypto::tink::AesCtrHmacAeadKeyFormat, 42 List<Aead>> { 43 public: 44 class AeadFactory : public PrimitiveFactory<Aead> { 45 crypto::tink::util::StatusOr<std::unique_ptr<Aead>> Create( 46 const google::crypto::tink::AesCtrHmacAeadKey& key) const override; 47 }; 48 AesCtrHmacAeadKeyManager()49 AesCtrHmacAeadKeyManager() 50 : KeyTypeManager(absl::make_unique<AeadFactory>()) {} 51 get_version()52 uint32_t get_version() const override { return 0; } 53 key_material_type()54 google::crypto::tink::KeyData::KeyMaterialType key_material_type() 55 const override { 56 return google::crypto::tink::KeyData::SYMMETRIC; 57 } 58 get_key_type()59 const std::string& get_key_type() const override { return key_type_; } 60 61 crypto::tink::util::Status ValidateKey( 62 const google::crypto::tink::AesCtrHmacAeadKey& key) const override; 63 crypto::tink::util::Status ValidateKeyFormat( 64 const google::crypto::tink::AesCtrHmacAeadKeyFormat& key) const override; 65 66 crypto::tink::util::StatusOr<google::crypto::tink::AesCtrHmacAeadKey> 67 CreateKey(const google::crypto::tink::AesCtrHmacAeadKeyFormat& key_format) 68 const override; 69 70 crypto::tink::util::StatusOr<google::crypto::tink::AesCtrHmacAeadKey> 71 DeriveKey(const google::crypto::tink::AesCtrHmacAeadKeyFormat& key_format, 72 InputStream* input_stream) const override; 73 FipsStatus()74 internal::FipsCompatibility FipsStatus() const override { 75 return internal::FipsCompatibility::kRequiresBoringCrypto; 76 } 77 78 private: 79 const std::string key_type_ = 80 absl::StrCat(kTypeGoogleapisCom, 81 google::crypto::tink::AesCtrHmacAeadKey().GetTypeName()); 82 }; 83 84 } // namespace tink 85 } // namespace crypto 86 87 #endif // TINK_AEAD_AES_CTR_HMAC_AEAD_KEY_MANAGER_H_ 88