An application of host identity tags to DKIM for identifying signers

In TAMC'06, Bao et al. proposed a new identity-based threshold proxy signature with known signers from the bilinear pairings for the first time. In this paper, however, an attack is proposed to show that their scheme have serious security flaws. By this ...

Cryptographic identification schemes allow a remote user to prove his/her identity to a verifier who holds some public information of the user, such as the user public key or identity. Most of the existing cryptographic identification schemes are based ...

The privacy and anonymity of a signer and the integrity and authenticity of a message are important. Generally, whenever the signer states the authenticity of a message (by producing a signature on that message), the privacy and anonymity of that signer ...