Читать книгу Blockchain for Business - Группа авторов - Страница 28

Although the decentralized mixing techniques gives an “excellent” mixing in the blockchain, but they still need a delay till the time participants discover or find their partners for their transactions to be mixed. The ring signature enables a user (also a member of a set) to sign a message on behalf of the “ring” of members but there is no way to say that which one is real and who have signed. The core idea and methodology of this technology is the choice of a set without any central manager, which will significantly improve privacy in blockchain [1].

Brief of mixing services in blockchain [1].

Protocol	Anonymity	Centralized Party	Mix Cost	Sybil Strength	Dos Strength	Mixing Scale	Theft Strength	Waiting Time
Mixing website	Linkable at mixer	Required	Yes	Good	Poor	L/A	High	Long
CoinSwap	Linkable at mixer	Required	Yes	Good	Poor	N/A	Safe	Long
Mixcoin	Linkable at mixer	Required	Yes	Good	Poor	N/A	Accountable	Long
Blindcoin	Unlinkable	Required	Yes	Good	Poor	N/A	Accountable	Long
Blindly Signed Contracts	Unlinkable	Required	Yes	Good	Poor	N/A	Safe	Long
TumbleBit	Unlinkable	Required	Yes	Good	Good	L/T	Safe	Long
Dash	Unlinkable	Required Many	Yes	Good	Good	Less	P/D	Normal
Coinjoin	Internal Unlinkable	Decentralized	No	Poor	Poor	Less	High	Long
CoinShuffle	Unlinkable	Decentralized	No	Good	Moderate	Less	High	Long
XIM	Unlinkable	Decentralized	No	Moderate with fees	Moderate with fees	Large	Low	Long

Abbreviations:

L/A—Limited to access

N/A—No Limitation

L/T—Limited by transaction

P/D—Prevented with deposit