Recently، digital image authentication technologies have gained much attention because of their importance in many multimedia applications. In general digital images are transmitted over unsaved media such as the internet and many types of computer networks. Applications may require a large amount of safety such as military applications and medical applications. Therefore the digital images must be protected against any modifications، which may lead to influence the decisions that associated with them. In this paper، a general scheme based on Steganography & Perceptual Image Hashing techniques was proposed to enhance the security of digital image transmission. In the final test stage, we checked the accuracy of the proposed scheme against potential modifications was studied, by applying different levels of compression and changing the contrast & brightness level of the image. For analyzing the final results, we computed the matching ratio between the original hash vector and the embedded hash vector. As a result، we achieved a near perfect match ratio even after applying the image compression level or changing its brightness level (approximately 99.9%), while the match ratio decreased significantly with the increase of the contrast level of the image (approximately 94%).