Abstract: An information hiding algorithm for color images is proposed. This algorithm not only can hide data as many as 2048 bytes, but also can implement blind detection of the hidden information without resorting to the original image or any other additional information. The algorithm can trade off the conflict of invisibility and robustness of the invisible watermark by adopting 3D-DCT and the embedding method in this paper. The proposed algorithm adopts error-correcting coding and data interleaving techniques to improve the performance of resisting diverse attacks. The experimental results show that the hidden watermark is robust, even when the bit error rate before correction can be 3×10-1～3×10-2 under many attacks in StirMark.