A Comparison on Broadcast Encryption Schemes: A New Broadcast Encryption Scheme

In a broadcast communication method,the schemes in which encryption methods are used are often used to transmit messages from a source to multiple users. These schemes are divided into central and de-central in terms of key server operations. In this work, two central methods which are widely used nowadays are mentioned: Logical Key Hierarchy (LKH) and One Way Function Tree (OFT) schemes. A scheme for broadcast communication is proposed and compared with the existing schemes in terms of numbers-sizes of key transmissions in user joining/removing and numbers-sizes of keys in the user