I want to save user's id and password in App.
What is recommendable encryption way when I save id and password.
I'm finding more safe way from Jailbreak or Hacker.
How about GenericKeychain sample code ?
http://developer.apple.com/library/ios/#samplecode/GenericKeychain/Introduction/Intro.html#//apple_ref/doc/uid/DTS40007797
I can't have confidence about safe how to use Keychain like GenericKeychain sample code.
Please tell me some advices. Thank you ^^*
You can use the Security framework
#import <Security/Security.h>
To save a username and password for a server:
-(void) saveUsername:(NSString*)user withPassword:(NSString*)pass forServer:(NSString*)server {
// Create dictionary of search parameters
NSDictionary* dict = [NSDictionary dictionaryWithObjectsAndKeys:(__bridge id)(kSecClassInternetPassword), kSecClass, server, kSecAttrServer, kCFBooleanTrue, kSecReturnAttributes, nil];
// Remove any old values from the keychain
OSStatus err = SecItemDelete((__bridge CFDictionaryRef) dict);
// Create dictionary of parameters to add
NSData* passwordData = [pass dataUsingEncoding:NSUTF8StringEncoding];
dict = [NSDictionary dictionaryWithObjectsAndKeys:(__bridge id)(kSecClassInternetPassword), kSecClass, server, kSecAttrServer, passwordData, kSecValueData, user, kSecAttrAccount, nil];
// Try to save to keychain
err = SecItemAdd((__bridge CFDictionaryRef) dict, NULL);
}
To remove:
-(void) removeAllCredentialsForServer:(NSString*)server {
// Create dictionary of search parameters
NSDictionary* dict = [NSDictionary dictionaryWithObjectsAndKeys:(__bridge id)(kSecClassInternetPassword), kSecClass, server, kSecAttrServer, kCFBooleanTrue, kSecReturnAttributes, kCFBooleanTrue, kSecReturnData, nil];
// Remove any old values from the keychain
OSStatus err = SecItemDelete((__bridge CFDictionaryRef) dict);
}
To read:
-(void) getCredentialsForServer:(NSString*)server {
// Create dictionary of search parameters
NSDictionary* dict = [NSDictionary dictionaryWithObjectsAndKeys:(__bridge id)(kSecClassInternetPassword), kSecClass, server, kSecAttrServer, kCFBooleanTrue, kSecReturnAttributes, kCFBooleanTrue, kSecReturnData, nil];
// Look up server in the keychain
NSDictionary* found = nil;
CFDictionaryRef foundCF;
OSStatus err = SecItemCopyMatching((__bridge CFDictionaryRef) dict, (CFTypeRef*)&foundCF);
// Check if found
found = (__bridge NSDictionary*)(foundCF);
if (!found)
return;
// Found
NSString* user = (NSString*) [found objectForKey:(__bridge id)(kSecAttrAccount)];
NSString* pass = [[NSString alloc] initWithData:[found objectForKey:(__bridge id)(kSecValueData)] encoding:NSUTF8StringEncoding];
}
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