Combining CryptoCoding and FastCoding

gistfile1.m

- (void)writeObject:(id)object toFile:(NSString *)file withPassword:(NSString *)password
{
    NSData *data = [FastCoder dataWithRootObject:object];
    CryptoArchive *archive = [[CryptoArchive alloc] initWithRootObject:data password:password];
    data = [FastCoder dataWithRootObject:archive];
    [data writeToFile:file atomically:YES];
}

- (id)readObjectFromFile:(NSString *)file withPassword:(NSString *)password
{
    NSData *data = [NSData dataWithContentsOfFile:file];
    CryptoArchive *archive = [FastCoder objectWithData:data];
    data = [archive unarchiveRootObjectWithPassword:password];
    return [FastCoder objectWithData:data];
}