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57 lines
2.1 KiB
57 lines
2.1 KiB
// |
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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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