Due to advancements in information security, the effectiveness of traditional photo encryption techniques has diminished, making it unable to transmit pictures securely. We present a new picture-based encryption method that has the potential to greatly improve the security of image communication. Conventionally, the square area is all that could be used for the scrambling approach based on the Arnold transformation. As such, we describe an approach to picture encryption by means of scrambling, whereby the original, non-square image is divided into numerous smaller, square portions. Test results show that the novel approach succeeds in preventing decoding and practically totally recovering the original picture, so fulfilling the aims of secure and reliable image transmission.

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