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Design of System for Avoiding upload of Identical-file using SA Hash Algorithm

  • Journal of The Korea Society of Computer and Information
  • Abbr : JKSCI
  • 2014, 19(10), pp.81-89
  • Publisher : The Korean Society Of Computer And Information
  • Research Area : Engineering > Computer Science

황성민 1 Seog-Gyu Kim 1

1안동대학교

Accredited

ABSTRACT

In this paper, we propose SA hash algorithm to avoid upload identical files and design server systemusing proposed SA hash algorithm. Client to want to upload file examines the value of SA hash and if thesame file is found in server system client use the existing file without upload. SA hash algorithm which is able to examine the identical-file divides original file into blocks of n bits. Original file’s mod i bit and output hash value’s i bit is calculated with XOR operation. It is SA hashalgorithm’s main routine to repeat the calculation with XOR until the end of original file. Using SA hashalgorithm which is more efficient than MD5, SHA-1 and SHA-2, we can design server system to avoid uploading identical file and save storage capacity and upload-time of server system.

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