Research on Company-Oriented General Authenticated Encryption Threshold Scheme
Yu Lian Shang, Guo Qing Yang, Lan Hua Zhang, Yu Fei Zhang · Applied Mechanics and Materials · 2012
Based on ElGamal system, a general authenticated encryption scheme characterized by (k, l) joint verification was put forward through integrating (t, n) threshold signature scheme and message recovery technique together. After being signed by any t ones from a company with n members, message m was transmitted to a particular verifier company with l members, and then recovered through the cooperation of any k ones from the verifier company, so as to realize a directional transmission between different companies. The security of this scheme is based on threshold scheme of Shamir and ElGamal system, and the scheme enjoys the characteristics of lower bandwidth and reduced communication cost, etc.