Image information hiding method based on low-dimensional sine chaotic system

The invention provides an image information hiding method based on a low-dimensional sine chaotic system, which comprises the following steps of: reading information T to be hidden, and importing a common plaintext image # imgabs0 # for hiding the information; calling an MD5 function to act on the information T to obtain a bit stream B0; dividing the B0 into two bit streams B1 and B2; scrambling the defined lists S01, L01 and L02 by taking B1 as a random seed to obtain sequences S1, L1 and L2; constructing a low-dimensional sine chaotic system key and generating a chaotic sequence S2; converting the information T into a bit stream and hiding the bit stream in a plaintext image # imgabs1 # to obtain an image C1 after the information is hidden; and performing row and column scrambling on the C1 by using the random sequences L1 and L2 to obtain a ciphertext image C2, and encrypting the ciphertext image C2 through the chaos sequence S2. According to the method, the sine chaotic system formed by compounding the si