gistfile1.m

SecAccessRef createAccess(NSString *accessLabel)
{
    OSStatus err;
    SecAccessRef access=nil;
    NSArray *trustedApplications=nil;

    //Make an exception list of trusted applications; that is,
    // applications that are allowed to access the item without
    // requiring user confirmation:
    SecTrustedApplicationRef myself, someOther;

    //Create trusted application references; see SecTrustedApplications.h:
    err = SecTrustedApplicationCreateFromPath(NULL, &myself);
    err = SecTrustedApplicationCreateFromPath("/Applications/Mail.app",
                                                            &someOther);
    trustedApplications = [NSArray arrayWithObjects:(id)myself,
                                                    (id)someOther, nil];
    //Create an access object:
    err = SecAccessCreate((CFStringRef)accessLabel,
                            (CFArrayRef)trustedApplications, &access);
    if (err) return nil;

    return access;
}