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    <p>I've written a simple wrapper that allows saving of any NSCoding-compliant object to the keychain. You could, for example, store your email and password in an NSDictionary and store the NSDictionary to the keychain using this class.</p> <p><strong>SimpleKeychain.h</strong></p> <pre><code>#import &lt;Foundation/Foundation.h&gt; @class SimpleKeychainUserPass; @interface SimpleKeychain : NSObject + (void)save:(NSString *)service data:(id)data; + (id)load:(NSString *)service; + (void)delete:(NSString *)service; @end </code></pre> <p><strong>SimpleKeychain.m</strong></p> <pre><code>#import "SimpleKeychain.h" @implementation SimpleKeychain + (NSMutableDictionary *)getKeychainQuery:(NSString *)service { return [NSMutableDictionary dictionaryWithObjectsAndKeys: (id)kSecClassGenericPassword, (id)kSecClass, service, (id)kSecAttrService, service, (id)kSecAttrAccount, (id)kSecAttrAccessibleAfterFirstUnlock, (id)kSecAttrAccessible, nil]; } + (void)save:(NSString *)service data:(id)data { NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; SecItemDelete((CFDictionaryRef)keychainQuery); [keychainQuery setObject:[NSKeyedArchiver archivedDataWithRootObject:data] forKey:(id)kSecValueData]; SecItemAdd((CFDictionaryRef)keychainQuery, NULL); } + (id)load:(NSString *)service { id ret = nil; NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; [keychainQuery setObject:(id)kCFBooleanTrue forKey:(id)kSecReturnData]; [keychainQuery setObject:(id)kSecMatchLimitOne forKey:(id)kSecMatchLimit]; CFDataRef keyData = NULL; if (SecItemCopyMatching((CFDictionaryRef)keychainQuery, (CFTypeRef *)&amp;keyData) == noErr) { @try { ret = [NSKeyedUnarchiver unarchiveObjectWithData:(NSData *)keyData]; } @catch (NSException *e) { NSLog(@"Unarchive of %@ failed: %@", service, e); } @finally {} } if (keyData) CFRelease(keyData); return ret; } + (void)delete:(NSString *)service { NSMutableDictionary *keychainQuery = [self getKeychainQuery:service]; SecItemDelete((CFDictionaryRef)keychainQuery); } @end </code></pre>
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    1. COwould this work for an osx keycahin?
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    2. CO@abe: Try it and see? According to the documentation all the same functions are available, but it's possible `getKeychainQuery:` needs to have extra parameters in the dictionary.
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    3. CO@Anomie i gave it a try and found it errors on values, one of which is kSecClassGenericPassword but i checked the documentation it appears to be support in foundation framework i also included security framework any thoughts on y it might error? thx
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