Smart Blockchain

Blockchain technology in Bitcoin is a decentralized, de-trusted, open and transparent distributed data storage technology that can reduce trust costs and achieve secure and reliable data interaction. However, an attacker can easily obtain all the Bitcoin transaction information from a public global ledger and use big-data analysis techniques to mine private information such as user transaction laws. Therefore, it is necessary to hide some of the transaction information in the public data. This paper presents a Bitcoin transaction information hiding algorithm based on HEVC without intra-frame distortion drift. We embed the specified transaction data into the three-tuple of the 4 4 luminance DST blocks which meet our conditions to avert the distortion drift. With the cross using of multiple three-tuple, the visual quality of the embedded video had a better promotion than using single three-tuple. The experimental results show that this new data hiding algorithm can effectively avert intra-frame distortion drift and get good visual quality.

[1]  Leslie Lamport,et al.  The Byzantine Generals Problem , 1982, TOPL.

[2]  Leslie Lamport,et al.  Paxos Made Simple , 2001 .

[3]  Adi Shamir,et al.  A method for obtaining digital signatures and public-key cryptosystems , 1978, CACM.

[4]  Miguel Castro,et al.  Practical byzantine fault tolerance and proactive recovery , 2002, TOCS.

[5]  Jaynarayan H. Lala,et al.  The Evolution of Fault Tolerant Computing at the Charles Stark Draper Laboratory, 1955-85 , 1987 .

[6]  Ronald L. Rivest,et al.  The MD5 Message-Digest Algorithm , 1992, RFC.

[7]  John K. Ousterhout,et al.  In Search of an Understandable Consensus Algorithm , 2014, USENIX ATC.

[8]  Marko Vukolic,et al.  XFT: Practical Fault Tolerance beyond Crashes , 2015, OSDI.

[9]  Ramakrishna Kotla,et al.  Zyzzyva: speculative byzantine fault tolerance , 2007, TOCS.

[10]  Bryan Ford,et al.  Enhancing Bitcoin Security and Performance with Strong Consistency via Collective Signing , 2016, USENIX Security Symposium.

[11]  Sunny King,et al.  PPCoin: Peer-to-Peer Crypto-Currency with Proof-of-Stake , 2012 .

[12]  Mihir Bellare,et al.  The Exact Security of Digital Signatures - HOw to Sign with RSA and Rabin , 1996, EUROCRYPT.

[13]  Gene Tsudik.  Message authentication with one-way hash functions , 1992, CCRV.

[14]  Wei Xu,et al.  Scaling Nakamoto Consensus to Thousands of Transactions per Second , 2018, ArXiv.

[15]  Michael Dahlin,et al.  Making Byzantine Fault Tolerant Systems Tolerate Byzantine Faults , 2009, NSDI.

[16]  Philip Koopman,et al.  Coverage and the use of cyclic redundancy codes in ultra-dependable systems , 2005, 2005 International Conference on Dependable Systems and Networks (DSN'05).