Secure Cooperative Regenerating Codes for Distributed Storage

[email protected]). A. S. Rawat and S. Vishwanath are with the Department of Electrical and Computer Engineering, The University of Texas at Aust...

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Feb 8, 2011 - illustrated. Index Terms—Distributed Storage, Repair Bandwidth, Regen- ... between the amount of storage in each node and the bandwidth .... The number of stages is potentially unlimited. A cut in an information flow graph is a partit

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Jan 20, 2011 - Regenerating codes are a class of distributed storage codes that optimally trade the bandwidth needed for repair of a failed ... K. V. Rashmi, Nihar B. Shah and P. Vijay Kumar are with the Department of Electrical Communication Enginee

May 12, 2014 - storage nodes in the cloud networks owned by certain private organizations can be eavesdropped. Providing secrecy against ... Despite of its practical benefits, there have been relatively very few attempts on employing weak secrecy for

May 12, 2014 - We show that the proposed construction has good security properties and requires small finite field size. I. INTRODUCTION. Distributed storage systems (DSS) have recently received significant research attention due to their important a

Jul 19, 2013 - We call CAD(d, k, r) the admissible region. If the parameters d, k and r are clear from the context, we will simply write CAD. We let γ∗(˜α) := min{x : (x, ˜α) ∈ CAD(d, k, r)}. (1). The value .... CAD(d, k, r) and not Pareto-d

Sep 28, 2013 - We also try to keep an adequate amount of availability at the ... need to download data from k nodes in MDS codes instead of just one in ..... Send vote requests to all the chunks in the nodes. N1,N2,...Nk, with maximum write distance.

Feb 14, 2016 - DSS consisting of n nodes, each with a storage capacity of α, using an [n, k, d]-(α) (or, in short, [n, k, ..... (where bi ∈ {k + 1,..., n} denote the t parity nodes in the helper set), it is necessary and sufficient to find d ...

Jul 26, 2011 - node during any instance of repair also contains the data that is eventually stored in that node. This is formalized in the following definition. Definition 1 ({ℓ, ℓ′} secure distributed storage system):. Consider a distributed s

Aug 17, 2016 - Here, we revisit the problem of exploring the secrecy capacity of minimum storage cooperative ... of those rapidly developing distributed networking applications, especially in cloud computing, social .... Despite the above crucial iss

Oct 12, 2009 - tradeoff because k pieces, each of size M/k, provide the minimum data for recovering the file, which is of size. M. ... nodes, reconstruct the original file, and compute the needed new coded piece. .... To reduce the total number of co

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Aug 6, 2013 - regenerate the data on the failed node. This metric is highly relevant as a large fraction of network bandwidth in DSS can be occupied by the data being transferred during the repair process. Thus, it is desirable to have coding schemes

Aug 16, 2015 - Repair operations in distributed storage systems potentially expose the data to malicious acts of passive eavesdroppers or active adversaries, which can be detrimental to the security of the system. This paper presents erasure codes an

Aug 17, 2016 - Suppose there is an MSCR-coding-based DSS specified by {n, k, d, t = 2,B} and the repair downloads of node 1 is observed by the ..... can totally obtain (d = α)-sized repair data from the jth parity node to the first node that are. {.

12 hours ago - 2.1 A comparison of upper bounds on the dimension k of a binary LR code, for given ..... Linux RAID-6. RS(10,8) ... Baidu's Atlas Cloud Storage.

Sep 13, 2010 - ability to repair a failed node by connecting to any arbitrary d nodes and downloading an amount of data that is ... P. Vijay Kumar is also an adjunct faculty member of ... Kannan Ramchandran is with the Department of Electrical Engine

Aug 20, 2017 - a class of regenerating codes with minimum storage is introduced that can simultaneously operate at ... DSSs nowadays it is common to lose access to a storage node or part of its content. Hence, both ..... engagement property for cloud

Feb 2, 2012 - The data is then processed and α bits are stored. The amounts of data exchanged and stored during repairs are summarized on. Figure 2. These studies lead to the definition of the optimal tradeoffs between storage α and repair costs γ

Jul 4, 2012 - ative regenerating codes at the MBCR (minimum bandwidth cooperative regeneration) point. Before the paper, the only known explicit MBCR code is given with parameters n = d+r and d = k, while our construction applies to all possible valu

Keywords: distributed storage system, local codes with cooperative repair, ... Unlike in RAID 4, RAID 5's parity information is distributed among the drives, which ...

RAID 4 consists of block-level striping with a dedicated parity disk, whereas RAID 5 with distributed parity. [13]. Unlike in RAID 4, ... II. Background and Related Work. A. MSR codes and MBR codes. In a DSS, a message file of M symbols over. ( ). GF

Jun 1, 2017 - from the other two nodes, which will violate the security requirement. However, any node failure can be securely repaired by the two-round scheme shown above. To see that the scheme is secure, note that after the repair process Node 1 h