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85 lines
3.0 KiB
85 lines
3.0 KiB
/*
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* Copyright 2019 Google
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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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#import <Foundation/Foundation.h>
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@class FIRInstanceIDKeyPair;
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extern NSString *const kFIRInstanceIDKeyPairSubType;
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@class FIRInstanceIDKeyPairStore;
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@interface FIRInstanceIDKeyPairStore : NSObject
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/**
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* Invalidates the cached keypairs in the Keychain, if needed. The keypair metadata plist is
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* checked for existence. If the plist file does not exist, it is a signal of a new installation,
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* and therefore the key pairs are not valid.
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*
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* Returns YES if keypair has been invalidated.
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*/
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- (BOOL)invalidateKeyPairsIfNeeded;
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/**
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* Delete the cached RSA keypair from Keychain with the given subtype.
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*
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* @param subtype The subtype used to cache the RSA keypair in Keychain.
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* @param handler The callback handler which is invoked when the keypair deletion is
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* complete, with an error if there is any.
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*/
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- (void)deleteSavedKeyPairWithSubtype:(NSString *)subtype handler:(void (^)(NSError *))handler;
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/**
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* Delete the plist that caches KeyPair generation timestamps.
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*
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* @param error The error if any while deleting the plist else nil.
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*
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* @return YES if the delete was successful else NO.
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*/
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- (BOOL)removeKeyPairCreationTimePlistWithError:(NSError **)error;
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/**
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* Loads a cached KeyPair if it exists in the Keychain else generate a new
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* one. If a keyPair already exists in memory this will just return that. This should
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* not be called from the main thread since it could potentially lead to creating a new
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* RSA-2048 bit keyPair which is an expensive operation.
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*
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* @param error The error, if any, while accessing the Keychain.
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*
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* @return A valid 2048 bit RSA key pair.
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*/
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- (FIRInstanceIDKeyPair *)loadKeyPairWithError:(NSError **)error;
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/**
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* Check if the Keychain has any cached keypairs or not.
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*
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* @return YES if the Keychain has cached RSA KeyPairs else NO.
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*/
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- (BOOL)hasCachedKeyPairs;
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/**
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* Return an identifier for the app instance. The result is a short identifier that can
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* be used as a key when storing information about the app. This method will return the same
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* ID as long as the application identity remains active. If the identity has been revoked or
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* expired the method will generate and return a new identifier.
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*
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* @param error The error if any while loading the RSA KeyPair.
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*
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* @return The identifier, as url safe string.
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*/
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- (NSString *)appIdentityWithError:(NSError *__autoreleasing *)error;
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@end
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