Designated Verifier Strong Blind Signature Scheme with Message Recovery

Cryptanalysis of the blind signature scheme with message recovery based on DLP which is proposed by Chu et al. shows that the scheme exists follow security flaws: the attacker can forge blind signature of any message, that is to say it doesn't satisfy unforgeability; the signer can track the message owner colluded with the designated verifier, that is to say the scheme is linkable. An improved designated verifier blind signature scheme with message recovery was purposed to overcome these security problems. The new scheme satisfies verifiability, unforgeability, non-repudiation, and unlinkability, and it is a secure strong blind signature scheme.