Secure Analog joint source channel coding (AJSCC) is a novel Shannon-Kotelnikovs mapping based confidential data protection scheme, whose security and integrity of the encrypted image sharing resist fraudulent scenario. Nowadays these problems affect most of the secure communication systems. Here this paper deals with AJSCC for which we make a literate choice of a good mapping structure such that the distortion between the transmitted and the reconstructed data is minimized. Initially investigation of transmission of independent and identically distributed (iid) Gaussian source over AWGN channel is performed. Then the case of 2:1 bandwidth reduction which can be easily applied for higher reduction factors is achieved which is further studied for image application. Furthermore, a data encryption based on position shuffling is introduced. The algorithm shuffles and reshuffles position of the image element in a retraceable manner with a large and different set of sensitive keys, which is sufficient to resist brute force attack. The proposed encryption scheme gives a significant resistance to other statistical attack with reduced delay and bandwidth efficiency.