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Abstract: Multicast establishes a group communication, where one sender can transmit the message to multiple receivers. Multicasting makes this transmission efficient by making the client to send just one copy. But for secure transmission in the multicast environment is a major issue it should maintain the authentication, non-repudiation and integrity of messages. For this we have created a multicast environment which ensures all these properties by applying digital signature for authentication by signing the messages by private key of sender and using more secure hash algorithm SHA-192 for improving integrity of messages.
Keywords: SHA-192, multicast, authentication, integrity, non repudiation, DSA
1 Introduction
Multicast is an efficient …show more content…
Step 2: Router connects to the server.
Step 3: After connecting to the router the server sends the digitally sign message. Figure 3.1 shows the packetizing of the message and sending the packets after computing the r, s and hash of message using digital signature algo over each packet. Figure 3.1: Sender connects to router and sends messages in form of packets to router after applying Digital signature algorithm to each packet and calculated the hash of each packet then sends hash, r and s.
Step 5: After sending the messages router receive the each packet and sends the various clients. Figure 3.2 shows the number of packets gets from sender and no of clients which are connected. Figure 3.2: Router accepted packets and sends to connected clients
Step 6: Router sends the packets to the connected clients. Here there are 3 clients connected to router and they individually apply signature verification on each packet by comparing hash of actual message and received message. In figure 3.3, 3.4 and 3.5 they shows the three clients are connected and gets the signed messages after accepts the packets after applying verification

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