Abstract
In this paper we propose a bilinear pairing based hidden blind signature scheme. The proposed scheme allows the signer to append information to the hidden signed message. The requester cannot modify neither this information nor the signed message. This added information can be used to stamp the signature with a certain date and/or other relevant information which is an essential requirement in applications such as notary services and patent time proof. After issuing the signature by the signer, the requester can verify that the signature has the designated date and place. The security of the proposed scheme is analyzed against different cryptanalytic attacks.
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