International Journal of Emerging Science and Engineering (IJESE)
Multi-signature is a signature scheme in which signers jointly generate a signature on a message. The authors' project applies Multi-signature scheme for sending messages in a group. Multi-signature is more secure and eliminates the latest attacks. Individual signers are identified by the information contained in Multi-signature. Their project provides an overview and comparison between the RSA cryptosystem and Elgamal cryptosystem applied on groups for sending and receiving messages. The basic theories of the RSA cryptosystem and Elgamal cryptography are explored. The RSA cryptosystem and Elgamal cryptography theories are quite similar.