Efficient Authenticated Encryption Schemes with Public Verifiability

Details Efficient Authenticated Encryption Schemes with Public Verifiability Efficient Authenticated Encryption Schemes with Public Verifiability

2005-04-06

arxiv.org/abs/cs/0504019v1

Computer Science

Cryptography and Security

Early version appears in the Proc. of The 60th IEEE Vehicular Technology Conference (VTC 2004-Fall) - Wireless Technologies fo

Scientific paper

An authenticated encryption scheme allows messages to be encrypted and authenticated simultaneously. In 2003, Ma and Chen proposed such a scheme with public verifiability. That is, in their scheme the receiver can efficiently prove to a third party that a message is indeed originated from a specific sender. In this paper, we first identify two security weaknesses in the Ma-Chen authenticated encryption scheme. Then, based on the Schnorr signature, we proposed an efficient and secure improved scheme such that all the desired security requirements are satisfied.

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