iOS獲取設備惟一標識

時間  2021-08-14
標籤 git github markdown 網絡 app ide 工具 this url 欄目 iOS 简体版
原文   原文鏈接

1. 經常使用的UUID

UDID是一個40位十六進制序列（越獄的設備經過某些工具能夠改變設備的 UDID），移動網絡能夠利用 UDID 來識別移動設備。git

許多開發者把 UDID 跟用戶的我的信息關聯起來，網絡窺探者會從多個應用收集這些數據，而後順藤摸瓜獲得這我的的許多隱私數據，同時大部分應用確實在頻繁傳輸 UDID 和私人信息。 爲了不集體訴訟，蘋果最終決定在 iOS 5 的時候，將這一慣例廢除。github

  • 獲取UUID的方法：
/**  卸載應用從新安裝後會不一致*/
+ (NSString *)getUUID{
    return [UIDevice currentDevice].identifierForVendor.UUIDString;;
}
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2.UUID+本身存儲

2.1 獲取UUID的兩個方法

/**  卸載應用從新安裝後會不一致*/
+ (NSString *)getUUID{
    CFUUIDRef uuid = CFUUIDCreate(NULL);
    NSString *UUID = (__bridge_transfer NSString *)CFUUIDCreateString(NULL, uuid);
    CFRelease(uuid);
    return UUID;
}
 
/**  卸載應用從新安裝後會不一致*/
+ (NSString *)getUUID{
    return [UIDevice currentDevice].identifierForVendor.UUIDString;;
}
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很明顯UUID已經不足以支持設備的惟一性了，目前不少App都有新用戶的優惠，可是又要保證每臺設備綁定一個帳戶，若是單純使用UUID的話已經知足不了這個需求，因此，這裏須要用keychain保存，這樣即便卸載app在安裝，獲取到的UUID也是惟一性的。markdown

2.2 首先在項目中添加 KeyChain Sharing

WX20210422-152351.png

2.3 導入第三方庫 Security.framework

1619076442209.jpg

2.4 建立新類，引用 SSKeychain 封裝

#import "GetKeychain.h"
#import "SSKeychain.h"

@implementation GetKeychain

+ (NSString *)getDeviceUUID {
    NSString *currentDeviceUUIDStr = [SSKeychain passwordForService:@"項目boudle id" account:@"uuid"];
    if (currentDeviceUUIDStr == nil || [currentDeviceUUIDStr isEqualToString:@""])
    {
        NSUUID *currentDeviceUUID  = [UIDevice currentDevice].identifierForVendor;
        currentDeviceUUIDStr = currentDeviceUUID.UUIDString;
        currentDeviceUUIDStr = [currentDeviceUUIDStr stringByReplacingOccurrencesOfString:@"-" withString:@""];
        currentDeviceUUIDStr = [currentDeviceUUIDStr lowercaseString];
        [SSKeychain setPassword: currentDeviceUUIDStr forService:@"項目boudle id" account:@"uuid"];
    }
    
    return currentDeviceUUIDStr;
}

@end
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2.5 核心代碼（代碼有點多）

在github搜索SSKeychain能夠找到，只要 SSKeychain.h 和 SSKeychain.m 文件便可網絡

#import <Foundation/Foundation.h>
#import <Security/Security.h>

/** Error codes that can be returned in NSError objects. */
typedef enum {
	/** No error. */
	SSKeychainErrorNone = noErr,
	
	/** Some of the arguments were invalid. */
	SSKeychainErrorBadArguments = -1001,
	
	/** There was no password. */
	SSKeychainErrorNoPassword = -1002,
	
	/** One or more parameters passed internally were not valid. */
	SSKeychainErrorInvalidParameter = errSecParam,
	
	/** Failed to allocate memory. */
	SSKeychainErrorFailedToAllocated = errSecAllocate,
	
	/** No trust results are available. */
	SSKeychainErrorNotAvailable = errSecNotAvailable,
	
	/** Authorization/Authentication failed. */
	SSKeychainErrorAuthorizationFailed = errSecAuthFailed,
	
	/** The item already exists. */
	SSKeychainErrorDuplicatedItem = errSecDuplicateItem,
	
	/** The item cannot be found.*/
	SSKeychainErrorNotFound = errSecItemNotFound,
	
	/** Interaction with the Security Server is not allowed. */
	SSKeychainErrorInteractionNotAllowed = errSecInteractionNotAllowed,
	
	/** Unable to decode the provided data. */
	SSKeychainErrorFailedToDecode = errSecDecode
} SSKeychainErrorCode;

extern NSString *const kSSKeychainErrorDomain;

/** Account name. */
extern NSString *const kSSKeychainAccountKey;

/**
 Time the item was created.
 
 The value will be a string.
 */
extern NSString *const kSSKeychainCreatedAtKey;

/** Item class. */
extern NSString *const kSSKeychainClassKey;

/** Item description. */
extern NSString *const kSSKeychainDescriptionKey;

/** Item label. */
extern NSString *const kSSKeychainLabelKey;

/** Time the item was last modified.
 
 The value will be a string.
 */
extern NSString *const kSSKeychainLastModifiedKey;

/** Where the item was created. */
extern NSString *const kSSKeychainWhereKey;

/**
 Simple wrapper for accessing accounts, getting passwords, setting passwords, and deleting passwords using the system
 Keychain on Mac OS X and iOS.
 
 This was originally inspired by EMKeychain and SDKeychain (both of which are now gone). Thanks to the authors.
 SSKeychain has since switched to a simpler implementation that was abstracted from [SSToolkit](http://sstoolk.it).
 */
@interface SSKeychain : NSObject

///-----------------------
/// @name Getting Accounts
///-----------------------

/**
 Returns an array containing the Keychain's accounts, or `nil` if the Keychain has no accounts.
 
 See the `NSString` constants declared in SSKeychain.h for a list of keys that can be used when accessing the
 dictionaries returned by this method.
 
 @return An array of dictionaries containing the Keychain's accounts, or `nil` if the Keychain doesn't have any
 accounts. The order of the objects in the array isn't defined.
 
 @see allAccounts:
 */
+ (NSArray *)allAccounts;

/**
 Returns an array containing the Keychain's accounts, or `nil` if the Keychain doesn't have any
 accounts.
 
 See the `NSString` constants declared in SSKeychain.h for a list of keys that can be used when accessing the
 dictionaries returned by this method.
 
 @param error If accessing the accounts fails, upon return contains an error that describes the problem.
 
 @return An array of dictionaries containing the Keychain's accounts, or `nil` if the Keychain doesn't have any
 accounts. The order of the objects in the array isn't defined.
  
 @see allAccounts
 */
+ (NSArray *)allAccounts:(NSError **)error;

/**
 Returns an array containing the Keychain's accounts for a given service, or `nil` if the Keychain doesn't have any
 accounts for the given service.
 
 See the `NSString` constants declared in SSKeychain.h for a list of keys that can be used when accessing the
 dictionaries returned by this method.
 
 @param serviceName The service for which to return the corresponding accounts.
 
 @return An array of dictionaries containing the Keychain's accountsfor a given `serviceName`, or `nil` if the Keychain
 doesn't have any accounts for the given `serviceName`. The order of the objects in the array isn't defined.
 
 @see accountsForService:error:
 */
+ (NSArray *)accountsForService:(NSString *)serviceName;

/**
 Returns an array containing the Keychain's accounts for a given service, or `nil` if the Keychain doesn't have any
 accounts for the given service.
 
 @param serviceName The service for which to return the corresponding accounts.
 
 @param error If accessing the accounts fails, upon return contains an error that describes the problem.
 
 @return An array of dictionaries containing the Keychain's accountsfor a given `serviceName`, or `nil` if the Keychain
 doesn't have any accounts for the given `serviceName`. The order of the objects in the array isn't defined.
 
 @see accountsForService:
 */
+ (NSArray *)accountsForService:(NSString *)serviceName error:(NSError **)error;


///------------------------
/// @name Getting Passwords
///------------------------

/**
 Returns a string containing the password for a given account and service, or `nil` if the Keychain doesn't have a
 password for the given parameters.
 
 @param serviceName The service for which to return the corresponding password.
 
 @param account The account for which to return the corresponding password.
 
 @return Returns a string containing the password for a given account and service, or `nil` if the Keychain doesn't
 have a password for the given parameters.
 
 @see passwordForService:account:error:
 */
+ (NSString *)passwordForService:(NSString *)serviceName account:(NSString *)account;

/**
 Returns a string containing the password for a given account and service, or `nil` if the Keychain doesn't have a
 password for the given parameters.
 
 @param serviceName The service for which to return the corresponding password.
 
 @param account The account for which to return the corresponding password.
 
 @param error If accessing the password fails, upon return contains an error that describes the problem.
 
 @return Returns a string containing the password for a given account and service, or `nil` if the Keychain doesn't
 have a password for the given parameters.
 
 @see passwordForService:account:
 */
+ (NSString *)passwordForService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error;

/**
 Returns the password data for a given account and service, or `nil` if the Keychain doesn't have data 
 for the given parameters.
 
 @param serviceName The service for which to return the corresponding password.
 
 @param account The account for which to return the corresponding password.
 
 @param error If accessing the password fails, upon return contains an error that describes the problem.
 
 @return Returns a the password data for the given account and service, or `nil` if the Keychain doesn't
 have data for the given parameters.
 
 @see passwordDataForService:account:error:
 */
+ (NSData *)passwordDataForService:(NSString *)serviceName account:(NSString *)account;

/**
 Returns the password data for a given account and service, or `nil` if the Keychain doesn't have data 
 for the given parameters.
 
 @param serviceName The service for which to return the corresponding password.
 
 @param account The account for which to return the corresponding password.
 
 @param error If accessing the password fails, upon return contains an error that describes the problem.
 
 @return Returns a the password data for the given account and service, or `nil` if the Keychain doesn't
 have a password for the given parameters.
 
 @see passwordDataForService:account:
 */
+ (NSData *)passwordDataForService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error;


///-------------------------
/// @name Deleting Passwords
///-------------------------

/**
 Deletes a password from the Keychain.
 
 @param serviceName The service for which to delete the corresponding password.
 
 @param account The account for which to delete the corresponding password.
 
 @return Returns `YES` on success, or `NO` on failure.
 
 @see deletePasswordForService:account:error:
 */
+ (BOOL)deletePasswordForService:(NSString *)serviceName account:(NSString *)account;

/**
 Deletes a password from the Keychain.
 
 @param serviceName The service for which to delete the corresponding password.
 
 @param account The account for which to delete the corresponding password.
 
 @param error If deleting the password fails, upon return contains an error that describes the problem.
 
 @return Returns `YES` on success, or `NO` on failure.
 
 @see deletePasswordForService:account:
 */
+ (BOOL)deletePasswordForService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error;


///------------------------
/// @name Setting Passwords
///------------------------

/**
 Sets a password in the Keychain.
 
 @param password The password to store in the Keychain.
 
 @param serviceName The service for which to set the corresponding password.
 
 @param account The account for which to set the corresponding password.
 
 @return Returns `YES` on success, or `NO` on failure.
 
 @see setPassword:forService:account:error:
 */
+ (BOOL)setPassword:(NSString *)password forService:(NSString *)serviceName account:(NSString *)account;

/**
 Sets a password in the Keychain.
 
 @param password The password to store in the Keychain.
 
 @param serviceName The service for which to set the corresponding password.
 
 @param account The account for which to set the corresponding password.
 
 @param error If setting the password fails, upon return contains an error that describes the problem.
 
 @return Returns `YES` on success, or `NO` on failure.
 
 @see setPassword:forService:account:
 */
+ (BOOL)setPassword:(NSString *)password forService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error;

/**
 Sets arbirary data in the Keychain.
 
 @param password The data to store in the Keychain.
 
 @param serviceName The service for which to set the corresponding password.
 
 @param account The account for which to set the corresponding password.
 
 @param error If setting the password fails, upon return contains an error that describes the problem.
 
 @return Returns `YES` on success, or `NO` on failure.
 
 @see setPasswordData:forService:account:error:
 */
+ (BOOL)setPasswordData:(NSData *)password forService:(NSString *)serviceName account:(NSString *)account;

/**
 Sets arbirary data in the Keychain.
 
 @param password The data to store in the Keychain.
 
 @param serviceName The service for which to set the corresponding password.
 
 @param account The account for which to set the corresponding password.
 
 @param error If setting the password fails, upon return contains an error that describes the problem.
 
 @return Returns `YES` on success, or `NO` on failure.
 
 @see setPasswordData:forService:account:
 */
+ (BOOL)setPasswordData:(NSData *)password forService:(NSString *)serviceName account:(NSString *)account error:(NSError **)error;


///--------------------
/// @name Configuration
///--------------------

#if __IPHONE_4_0 && TARGET_OS_IPHONE
/**
 Returns the accessibility type for all future passwords saved to the Keychain.
 
 @return Returns the accessibility type.
 
 The return value will be `NULL` or one of the "Keychain Item Accessibility Constants" used for determining when a
 keychain item should be readable.
 
 @see accessibilityType
 */
+ (CFTypeRef)accessibilityType;

/**
 Sets the accessibility type for all future passwords saved to the Keychain.
 
 @param accessibilityType One of the "Keychain Item Accessibility Constants" used for determining when a keychain item
 should be readable.
 
 If the value is `NULL` (the default), the Keychain default will be used.
 
 @see accessibilityType
 */
+ (void)setAccessibilityType:(CFTypeRef)accessibilityType;
#endif

@end

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#import "SSKeychain.h"

NSString *const kSSKeychainErrorDomain = @"com.samsoffes.sskeychain";

NSString *const kSSKeychainAccountKey = @"acct";
NSString *const kSSKeychainCreatedAtKey = @"cdat";
NSString *const kSSKeychainClassKey = @"labl";
NSString *const kSSKeychainDescriptionKey = @"desc";
NSString *const kSSKeychainLabelKey = @"labl";
NSString *const kSSKeychainLastModifiedKey = @"mdat";
NSString *const kSSKeychainWhereKey = @"svce";

#if __IPHONE_4_0 && TARGET_OS_IPHONE  
CFTypeRef SSKeychainAccessibilityType = NULL;
#endif

@interface SSKeychain ()
+ (NSMutableDictionary *)_queryForService:(NSString *)service account:(NSString *)account;
@end

@implementation SSKeychain

#pragma mark - Getting Accounts

+ (NSArray *)allAccounts {
    return [self accountsForService:nil error:nil];
}


+ (NSArray *)allAccounts:(NSError **)error {
    return [self accountsForService:nil error:error];
}


+ (NSArray *)accountsForService:(NSString *)service {
    return [self accountsForService:service error:nil];
}


+ (NSArray *)accountsForService:(NSString *)service error:(NSError **)error {
    OSStatus status = SSKeychainErrorBadArguments;
    NSMutableDictionary *query = [self _queryForService:service account:nil];
#if __has_feature(objc_arc)
	[query setObject:(__bridge id)kCFBooleanTrue forKey:(__bridge id)kSecReturnAttributes];
    [query setObject:(__bridge id)kSecMatchLimitAll forKey:(__bridge id)kSecMatchLimit];
#else
    [query setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnAttributes];
    [query setObject:(id)kSecMatchLimitAll forKey:(id)kSecMatchLimit];
#endif
	
	CFTypeRef result = NULL;
#if __has_feature(objc_arc)
    status = SecItemCopyMatching((__bridge CFDictionaryRef)query, &result);
#else
	status = SecItemCopyMatching((CFDictionaryRef)query, &result);
#endif
    if (status != noErr && error != NULL) {
		*error = [NSError errorWithDomain:kSSKeychainErrorDomain code:status userInfo:nil];
		return nil;
	}
	
#if __has_feature(objc_arc)
	return (__bridge_transfer NSArray *)result;
#else
    return [(NSArray *)result autorelease];
#endif
}


#pragma mark - Getting Passwords

+ (NSString *)passwordForService:(NSString *)service account:(NSString *)account {
	return [self passwordForService:service account:account error:nil];
}


+ (NSString *)passwordForService:(NSString *)service account:(NSString *)account error:(NSError **)error {
    NSData *data = [self passwordDataForService:service account:account error:error];
	if (data.length > 0) {
		NSString *string = [[NSString alloc] initWithData:(NSData *)data encoding:NSUTF8StringEncoding];
#if !__has_feature(objc_arc)
		[string autorelease];
#endif
		return string;
	}
	
	return nil;
}


+ (NSData *)passwordDataForService:(NSString *)service account:(NSString *)account {
    return [self passwordDataForService:service account:account error:nil];
}


+ (NSData *)passwordDataForService:(NSString *)service account:(NSString *)account error:(NSError **)error {
    OSStatus status = SSKeychainErrorBadArguments;
	if (!service || !account) {
		if (error) {
			*error = [NSError errorWithDomain:kSSKeychainErrorDomain code:status userInfo:nil];
		}
		return nil;
	}
	
	CFTypeRef result = NULL;	
	NSMutableDictionary *query = [self _queryForService:service account:account];
#if __has_feature(objc_arc)
	[query setObject:(__bridge id)kCFBooleanTrue forKey:(__bridge id)kSecReturnData];
	[query setObject:(__bridge id)kSecMatchLimitOne forKey:(__bridge id)kSecMatchLimit];
	status = SecItemCopyMatching((__bridge CFDictionaryRef)query, &result);
#else
	[query setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData];
	[query setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit];
	status = SecItemCopyMatching((CFDictionaryRef)query, &result);
#endif
	
	if (status != noErr && error != NULL) {
		*error = [NSError errorWithDomain:kSSKeychainErrorDomain code:status userInfo:nil];
		return nil;
	}
	
#if __has_feature(objc_arc)
	return (__bridge_transfer NSData *)result;
#else
    return [(NSData *)result autorelease];
#endif
}


#pragma mark - Deleting Passwords

+ (BOOL)deletePasswordForService:(NSString *)service account:(NSString *)account {
	return [self deletePasswordForService:service account:account error:nil];
}


+ (BOOL)deletePasswordForService:(NSString *)service account:(NSString *)account error:(NSError **)error {
	OSStatus status = SSKeychainErrorBadArguments;
	if (service && account) {
		NSMutableDictionary *query = [self _queryForService:service account:account];
#if __has_feature(objc_arc)
		status = SecItemDelete((__bridge CFDictionaryRef)query);
#else
		status = SecItemDelete((CFDictionaryRef)query);
#endif
	}
	if (status != noErr && error != NULL) {
		*error = [NSError errorWithDomain:kSSKeychainErrorDomain code:status userInfo:nil];
	}
	return (status == noErr);
    
}


#pragma mark - Setting Passwords

+ (BOOL)setPassword:(NSString *)password forService:(NSString *)service account:(NSString *)account {
	return [self setPassword:password forService:service account:account error:nil];
}


+ (BOOL)setPassword:(NSString *)password forService:(NSString *)service account:(NSString *)account error:(NSError **)error {
    NSData *data = [password dataUsingEncoding:NSUTF8StringEncoding];
    return [self setPasswordData:data forService:service account:account error:error];
}


+ (BOOL)setPasswordData:(NSData *)password forService:(NSString *)service account:(NSString *)account {
    return [self setPasswordData:password forService:service account:account error:nil];
}


+ (BOOL)setPasswordData:(NSData *)password forService:(NSString *)service account:(NSString *)account error:(NSError **)error {
    OSStatus status = SSKeychainErrorBadArguments;
	if (password && service && account) {
        [self deletePasswordForService:service account:account];
        NSMutableDictionary *query = [self _queryForService:service account:account];
#if __has_feature(objc_arc)
		[query setObject:password forKey:(__bridge id)kSecValueData];
#else
		[query setObject:password forKey:(id)kSecValueData];
#endif
		
#if __IPHONE_4_0 && TARGET_OS_IPHONE
		if (SSKeychainAccessibilityType) {
#if __has_feature(objc_arc)
			[query setObject:(id)[self accessibilityType] forKey:(__bridge id)kSecAttrAccessible];
#else
			[query setObject:(id)[self accessibilityType] forKey:(id)kSecAttrAccessible];
#endif
		}
#endif
		
#if __has_feature(objc_arc)
        status = SecItemAdd((__bridge CFDictionaryRef)query, NULL);
#else
		status = SecItemAdd((CFDictionaryRef)query, NULL);
#endif
	}
	if (status != noErr && error != NULL) {
		*error = [NSError errorWithDomain:kSSKeychainErrorDomain code:status userInfo:nil];
	}
	return (status == noErr);
}


#pragma mark - Configuration

#if __IPHONE_4_0 && TARGET_OS_IPHONE 
+ (CFTypeRef)accessibilityType {
	return SSKeychainAccessibilityType;
}


+ (void)setAccessibilityType:(CFTypeRef)accessibilityType {
	CFRetain(accessibilityType);
	if (SSKeychainAccessibilityType) {
		CFRelease(SSKeychainAccessibilityType);
	}
	SSKeychainAccessibilityType = accessibilityType;
}
#endif


#pragma mark - Private

+ (NSMutableDictionary *)_queryForService:(NSString *)service account:(NSString *)account {
    NSMutableDictionary *dictionary = [NSMutableDictionary dictionaryWithCapacity:3];
#if __has_feature(objc_arc)
    [dictionary setObject:(__bridge id)kSecClassGenericPassword forKey:(__bridge id)kSecClass];
#else
	[dictionary setObject:(id)kSecClassGenericPassword forKey:(id)kSecClass];
#endif
	
    if (service) {
#if __has_feature(objc_arc)
		[dictionary setObject:service forKey:(__bridge id)kSecAttrService];
#else
		[dictionary setObject:service forKey:(id)kSecAttrService];
#endif
	}
	
    if (account) {
#if __has_feature(objc_arc)
		[dictionary setObject:account forKey:(__bridge id)kSecAttrAccount];
#else
		[dictionary setObject:account forKey:(id)kSecAttrAccount];
#endif
	}
	
    return dictionary;
}

@end

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