加文字进bmp格式的图片文件，文字可以很容易地用256字节密钥以Rijndael算法加密/解密-Add language into bmp format image files, text can be easily used 256-byte key to Rijndael algorithm for encryption/decryption

采用H263算法对视频进行加密和解密，可以在C环境下运行，也可以在CCS中實現-The H263 algorithm to encrypt and decrypt the video, you can run in the C environment, you can also run in the CCS