TY - SER AU - Lee, Wei-Bin AU - Chang, Chin-Chen TI - Three ID-based information security functions KW - CRYPTOGRAPHY KW - DIGITAL SIGNATURE KW - INFORMATION THEORY KW - KEY DISTRIBUTION N1 - In this paper, we shall propose several new identity-based information security functions, including an authenticated key distribution scheme, a cryptosystem, as well as a digital signature scheme. Their security analyses are based on the difficulty of solving factorization, discrete logarithms moduloing a composite numbers, and the Diffie-Hellman problem ER -