This summary provides the key details from the document in 3 sentences: The document proposes a new method for encrypting two images into a single encrypted image using generalized weighted fractional Fourier transform (GWFRFT) with double random phase encoding. The encryption process involves applying pixel scrambling, phase encoding, and two rounds of GWFRFT with random phase masks on the combined image signal. This technique is shown to provide comparable security to the Advanced Encryption Standard (AES) with a 232-bit key size through a high number of possible permutations in the GWFRFT parameters and orders.