| /* |
| * |
| * Copyright (c) 2016-2017 Nest Labs, Inc. |
| * 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. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| /** |
| * @file |
| * This file defines a Wrapper for C++ implementation of key derivation functionality |
| * for pin encryption. |
| * |
| */ |
| |
| #import <Foundation/Foundation.h> |
| |
| NS_ASSUME_NONNULL_BEGIN |
| |
| extern NSString *const NLHKDFErrorDomain; |
| |
| // Error codes for NLKeyStoreErrorDomain |
| typedef NS_ENUM (NSInteger, NLHKDFErrorDomainCode){ |
| NLHKDFErrorDomainAlgNotSupported = 2, |
| NLHKDFErrorDomainKeyBuffSizeInsufficient = 3, |
| NLHKDFErrorDomainKeyInvalidRequestedKeySize = 4, |
| NLHKDFErrorDomainDeriveKeyFailure = 5 |
| }; |
| |
| /** |
| * @class Wrapper for C++ implementation of key derivation functionality |
| */ |
| @interface NLHKDF : NSObject |
| |
| + (nullable NSData *) deriveKey: (NSString *) alg |
| salt: (nullable NSData *) salt |
| keyMaterial1: (NSData *) keyMaterial1 |
| keyMaterial2: (NSData *) keyMaterial2 |
| info: (NSData *) info |
| requestedKeyLen: (NSUInteger) requestedKeyLen |
| error: (NSError **) errOut; |
| |
| @end |
| NS_ASSUME_NONNULL_END |
