Title :
Security of Okamoto public-key cryptosystem
Author_Institution :
NTT, Basic Research Laboratories, Musashino, Japan
Abstract :
The security of the Okamoto public-key cryptosystem is analysed. If some secret keys of this system are chosen inadequately, the known-plaintext attack is applicable to obtain all secret keys. To prevent the proposed cryptanalysis, the necessary condition for the secret keys is shown.
Keywords :
codes; cryptography; data communication systems; Okamoto; codes; cryptanalysis; known-plaintext attack; public-key cryptosystem; secret keys; security;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:19860708
