Application of True Random Number in Digital Image Encryption

According to true random number's disadvantage in digital image encryption,this article puts forward an encryption algorithm which yields XOR on digital image pixel sequence. This algorithm does image block scrambling based on Arnold transformation on the original picture before encryption. The receiver can get the original picture by doing XOR decryption and Arnold transformation. The encryption process of this algorithm is easy,what's more,image scrambling improves the confidentiality. Experiments prove that correlation among the pixels of the encrypted picture according to this algorithm is small,and this algorithm does well against scaling attack and has good anti-noise property.