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58 lines
2.1 KiB
58 lines
2.1 KiB
4 years ago
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// KeyChainStore.m
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//
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// Created by Andrew on 2017/8/5.
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// Copyright © 2017年 Andrew. All rights reserved.
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//
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#import "KeyChainStore.h"
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@implementation KeyChainStore
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+ (NSMutableDictionary *)getKeychainQuery:(NSString *)service {
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return [NSMutableDictionary dictionaryWithObjectsAndKeys:
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(id)kSecClassGenericPassword,(id)kSecClass,
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service, (id)kSecAttrService,
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service, (id)kSecAttrAccount,
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(id)kSecAttrAccessibleAfterFirstUnlock,(id)kSecAttrAccessible,
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nil];
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}
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+ (void)save:(NSString *)service data:(id)data {
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//Get search dictionary
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NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
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//Delete old item before add new item
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SecItemDelete((CFDictionaryRef)keychainQuery);
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//Add new object to search dictionary(Attention:the data format)
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[keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(id)kSecValueData];
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//Add item to keychain with the search dictionary
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SecItemAdd((CFDictionaryRef)keychainQuery, NULL);
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}
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+ (id)load:(NSString *)service {
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id ret = nil;
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NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
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//Configure the search setting
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//Since in our simple case we are expecting only a single attribute to be returned (the password) we can set the attribute kSecReturnData to kCFBooleanTrue
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[keychainQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];
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[keychainQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit];
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CFDataRef keyData = NULL;
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if (SecItemCopyMatching((CFDictionaryRef)keychainQuery, (CFTypeRef *)&keyData) == noErr) {
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@try {
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ret = [NSKeyedUnarchiver unarchiveObjectWithData:(__bridge NSData *)keyData];
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} @catch (NSException *e) {
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// TILog(@"Unarchive of %@ failed: %@", service, e);
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} @finally {
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}
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}
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if (keyData)
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CFRelease(keyData);
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return ret;
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}
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+ (void)deleteKeyData:(NSString *)service {
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NSMutableDictionary *keychainQuery = [self getKeychainQuery:service];
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SecItemDelete((CFDictionaryRef)keychainQuery);
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}
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@end
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