help with simple use of keychain framework

[Mark K. <ma...@bg...>]

Hi. Is there any documentation for the Keychain Framework? I am trying 
to use it in a simple Cocoa app but have been unsuccessful. What I am 
trying to do is, for a given service name, look up the keychain entry 
(the first one that matches would be fine), and get both the user name 
and password from it. Below is the code.

Any help would be most welcome.
	Mark


	Keychain *keychain;
	KeychainItem *keychainItem;
	NSArray *keychainSearchResultsArray;
	NSString  *accountName, *accountPassword;
		
	keychain = [Keychain defaultKeychain]; // get default keychain.
	keychainSearchResultsArray = [[[KeychainSearch 
keychainSearchWithKeychain:keychain] setService:hostName] retain]; 
//*** This returns nil always!!! Why?
	
	if (keychainSearchResultsArray != nil) {
		keychainItem = [keychainSearchResultsArray objectAtIndex:0]; // get 
acct & pw from first item.
		
		accountName = [keychainItem account];
		NSLog(@"account name is %@",accountName);
		[loginUser setStringValue:accountName];
		[loginPassword setStringValue:[keychain 
passwordForGenericService:hostName forAccount:accountName]];
		NSLog(@"password is %@",[keychain passwordForGenericService:hostName 
forAccount:accountName]);
	}