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ํ•ด๋‹น ํ”„๋กœ์ ํŠธ๋Š” ์„์‚ฌ ์—ฐ๊ตฌ๊ณผ์ • ์ค‘, ํ…€ ํ”„๋กœ์ ํŠธ๋กœ ๋ธ”๋ก์ฒด์ธ ํ•ฉ์˜์•Œ๊ณ ๋ฆฌ์ฆ˜์„ ์ƒˆ๋กญ๊ฒŒ ์„ค๊ณ„ํ•œ ํ”„๋กœ์ ํŠธ์ž…๋‹ˆ๋‹ค.

  • ์ฐธ์—ฌ์ธ์› : 2์ธ ํŒ€(๊ณต๋™ ํŒ€์žฅ ์—ญํ• )
  • ๊ธฐ๊ฐ„ : 2021๋…„ 09์›” ~ 2021๋…„ 10์›”(1๊ฐœ์›”)
  • ๋‚˜์˜ ์—ญํ• 
    • ๐Ÿ“ƒ ๊ธฐ์กด ์—๋„ˆ์ง€ ๊ฑฐ๋ž˜ ๋ฐฉ์‹ ํ•œ๊ณ„์  ๋ถ„์„
    • โœ๏ธ 2-stage ํ•ฉ์˜ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ์„ค๊ณ„
  • Github : https://github.com/ghkdqhrbals/blockchain-with-python

๐Ÿ“ƒ ๊ธฐ์กด ์—๋„ˆ์ง€ ๊ฑฐ๋ž˜ ๋ฐฉ์‹ ํ•œ๊ณ„์  ๋ถ„์„

ํ•œ๊ณ„์  ๋ฐ ์ œ์•ˆํ•˜๋Š” ๋ธ”๋ก์ฒด์ธ ํ”Œ๋žซํผ

1. ๊ธฐ์กด ์—๋„ˆ์ง€ ๊ฑฐ๋ž˜ ๋ฐฉ์‹ ํ•œ๊ณ„์ 

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  • ํ•œ๊ตญ ์ „๋ ฅ ๊ณต์‚ฌ์˜ ๊ณ„์•ฝ ๋…์ 
  • ๊ณ„์•ฝ ๋ฌด๊ฒฐ์„ฑ ์นจํ•ด ์œ„ํ—˜ ์กด์žฌ
  • ๊ณ„์•ฝ ์ˆ˜์ˆ˜๋ฃŒ ๋ฐœ์ƒ
  • ์ˆ˜๋™ํ™” ๊ณ„์•ฝ์œผ๋กœ ์ธํ•œ ๋น„ํšจ์œจ์„ฑ

2. ์ œ์•ˆํ•˜๋Š” ์—๋„ˆ์ง€ ๊ฑฐ๋ž˜ ๋ธ”๋ก์ฒด์ธ ํ”Œ๋žซํผ

img

  • ์ง€์†์ ์œผ๋กœ ๋ณ€ํ•˜๋Š” ๋ธ”๋ก ์ฑ„๊ตด์ž์—๊ฒŒ ๊ณ„์•ฝ ์œ„์ž„
  • ๊ณ„์•ฝ ๋ฌด๊ฒฐ์„ฑ ๋ณด์กด
  • ์ฑ„๊ตด์ž์—๊ฒŒ ๊ณ„์•ฝ ์ˆ˜์ˆ˜๋ฃŒ ์ง€๊ธ‰
  • ์ž๋™ํ™” ๊ณ„์•ฝ์œผ๋กœ ์ธํ•œ ํšจ์œจ์„ฑ

โœ๏ธ 2-stage ํ•ฉ์˜ ์•Œ๊ณ ๋ฆฌ์ฆ˜ ์„ค๊ณ„

2-stage ํ•ฉ์˜ ์•Œ๊ณ ๋ฆฌ์ฆ˜

1. ํŠธ๋žœ์ ์…˜ ์„ค๊ณ„

  1. Not signed by Supplier : ํŠธ๋žœ์žญ์…˜ ์ „์†ก
FROM(ID)ENERGYMONEYTO(ID)signature1signature2Fee
Amy5041$M1Sig(Amy, Tx1)NULL5%
Bob3022$M3Sig(Bob, Tx2)NULL7%
Chen2056$M2Sig(Chen, Tx3)NULL3%
โ€ฆโ€ฆโ€ฆโ€ฆโ€ฆโ€ฆโ€ฆ
  1. Signed by Supplier : ์„œ๋ช… ํ›„ ํŠธ๋žœ์žญ์…˜์— ๋‹ด๊ธฐ
FROM(ID)ENERGYMONEYTO(ID)signature1signature2Fee
Amy5041$M1Sig(Amy, Tx1)Sig(M1,Sig(Amy,Tx1))5%
Bob3022$M3Sig(Bob, Tx2)Sig(M2,Sig(Bob,Tx2))7%
Chen2056$M2Sig(Chen, Tx3)NULL3%
โ€ฆโ€ฆโ€ฆโ€ฆโ€ฆโ€ฆโ€ฆ

2. 2-stage consensus algorithm

  • ๋ธ”๋ก ์ƒ์„ฑ์ž ๊ฒฐ์ •

๐‘€๐‘–๐‘›๐‘’๐‘Ÿ=๐‘€๐‘Ž๐‘ฅ_๐ด๐‘‘๐‘‘๐‘Ÿ (โ„Ž๐‘Ž๐‘ โ„Ž(๐‘ƒ๐‘Ÿ๐‘’๐‘ฃ๐ต๐‘™๐‘œ๐‘๐‘˜๐ป๐‘Ž๐‘ โ„Ž,๐ด๐‘‘๐‘‘๐‘Ÿ)

  • ๋ธ”๋ก ์™„๊ฒฐ

โˆ‘(0<๐‘–<๐‘‘)๐‘…๐ธ100_๐‘–^๐‘Ž๐‘”๐‘Ÿ๐‘’๐‘’ โ‰ฅ2/3 ๐‘…๐ธ100_๐‘ก๐‘œ๐‘ก๐‘Ž๐‘™

3. ํ”„๋กœํ† ํƒ€์ž… ๊ฒฐ๊ณผ

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