Group-Based Source-Destination Verifiable Encryption with Blacklist Checking

2017 ◽  
pp. 186-203
Author(s):  
Zhongyuan Yao ◽  
Yi Mu ◽  
Guomin Yang
Keyword(s):  
Verifiable Encryption

Verifiable Encryption of Digital Signatures Using Elliptic Curve Digital Signature Algorithm and its Implementation Issues

2007 ◽  
pp. 184-203
Author(s):  
R. Anitha ◽  
R. S. Sankarasubramanian
Keyword(s):  
Elliptic Curve ◽  
Digital Signature ◽  
Digital Signatures ◽  
Third Party ◽  
Simple Scheme ◽  
Trusted Third Party ◽  
Parallel Multiplier ◽  
Digital Signature Algorithm ◽  
Verifiable Encryption

This chapter presents a new simple scheme for verifiable encryption of elliptic curve digital signature algorithm (ECDSA). The protocol we present is an adjudicated protocol, that is, the trusted third party (TTP) takes part in the protocol only when there is a dispute. This scheme can be used to build efficient fair exchanges and certified email protocols. In this paper we also present the implementation issues. We present a new algorithm for multiplying two 2n bits palindromic polynomials modulo xp–1 for prime p = 2n + 1 for the concept defined in Blake, Roth, and Seroussi (1998), and it is compared with the Sunar-Koc parallel multiplier given in Sunar and Koc (2001).

scholarly journals Verifiable Encryption and Applications to Group Signatures and Signature Sharing

1998 ◽  
Vol 5 (32) ◽  
Author(s):  
Jan Camenisch ◽  
Ivan B. Damgård
Keyword(s):  
Digital Signatures ◽  
Encryption Scheme ◽  
Random Oracles ◽  
Group Signatures ◽  
Wide Range ◽  
Encryption Schemes ◽  
Verifiable Encryption

We generalise and improve the security and efficiency of the verifiable encryption scheme of Asokan et al., such that it can rely on more general assumptions, and can be proven secure without relying on random oracles. We show a new application of verifiable encryption to group signatures with separability, these schemes do not need special purpose keys but can work with a wide range of signature and encryption schemes already in use. Finally, we extend our basic primitive to verifiable threshold and group encryption. By encrypting digital signatures this way, one gets new solutions to the verifiable signature sharing problem.

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