Eiji Okamoto

Proxy Signatures: Delegation of the Power to Sign Messages

Masahiro Mambo, Eiji Okamoto, Keisuke Usuda · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 1996 · 767 citations

Computing, Computer Science, Authentication +11

Proxy signatures for delegating signing operation

Masahiro Mambo, Keisuke Usuda, Eiji Okamoto · 1996 · 588 citations · Full text

Computing, Computer Science, Cybersecurity +12

Proxy Cryptosystems: Delegation of the Power to Decrypt Ciphertexts

Masahiro Mambo, Eiji Okamoto · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 1997 · 241 citations

Computing, Computer Engineering, Computer Science +10

Key distribution system based on identification information

Eiji Okamoto, K. Tanaka · IEEE Journal on Selected Areas in Communications · 1989 · 160 citations

Computing, Computer Engineering, Computer Science +14

Card-Based Protocols Using Regular Polygon Cards

Kazumasa Shinagawa, Takaaki Mizuki, Jacob C. N. Schuldt et al. · IEICE Transactions on Fundamentals of Electronics Communications and Computer Sciences · 2017 · 55 citations · Full text

Computing, Computer Engineering, Computer Science +11