Data encryption and decryption

Systems and methods for data encryption and decryption are provided. Packets of a streaming video from a video source are received. A first packet of the streaming video is encrypted with a encryption key and transmitted to a client device. The first packet is encrypted with a reference key and is designated as a reference packet. A number of packets of the encrypted media that follow the first packet are selected. For each of one or more selected packets, an XOR operation is performed on the respective selected packet with the reference packet. Result values of the XOR operation are rearranged by a shuffle key and divided into segments. Each of the segments is assigned to an even list or an odd list, which are combined to form a respective encrypted packet. The respective encrypted packet is designated as a non-reference packet and is transmitted to the client device.