A Three-Party Optimistic Certified Email Protocol Using Verifiably Encrypted Signature Scheme for Line Topology

2015 ◽  
Author(s):  
Yoshiaki Shiraishi ◽  
Masami Mohri ◽  
Hitoshi Miyazaki ◽  
Masakatu Morii
Keyword(s):  
Signature Scheme ◽  
Verifiably Encrypted Signature

An efficient secure proxy verifiably encrypted signature scheme

2010 ◽  
Vol 33 (1) ◽  
pp. 29-34 ◽  
Author(s):  
Jianhong Zhang ◽  
Chenglian Liu ◽  
Yixian Yang
Keyword(s):  
Signature Scheme ◽  
Verifiably Encrypted Signature

New Types of Verifiably Encrypted Signature Schemes

2012 ◽  
Vol 490-495 ◽  
pp. 914-918 ◽  
Author(s):  
Bao Yuan Kang
Keyword(s):  
Third Party ◽  
Signature Scheme ◽  
Signature Schemes ◽  
Trusted Third Party ◽  
Verifiably Encrypted Signature

A verifiably encrypted signature scheme involves a signer, a verifier, and an adjudicator. It can convince a verifier that a given ciphertext is an encryption of signature on a given message. At a later stage on agreed or in case of dispute, the adjudicator can extract and give the signer's signature to the verifier. In existing verifiably encrypted signatures, the adjudicator is assumed to be a trusted third party who will not conspire with either of the two parties involved. Obviously, this assumption is naive. In this paper, we propose two new types of verifiably encrypted signature schemes. They can resolve the problem that the adjudicator may collaborate with the verifier. We also analyze the security of the proposed schemes.

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