A digital signature scheme is one of essential cryptographic primitives for
secure transactions over open networks. Korean cryptographic community, in
association with government-supported agencies, has made a continuous effo
rt over past three years to develop our own signature standard. The outcome
of this long effort is the signature algorithm called KCDSA, which is now
at the final stage of standardization process and will be published as one
of KICS (Korean Information and Communication Standards). This paper descri
bes the proposed signature algorithm and discusses its security and efficie
ncy aspects. (C) 1999 Elsevier Science Ltd. All rights reserved.