一種完整的非對稱公鑰叛逆者追蹤方案
A Complete Asymmetric Public-Key Traitor Tracing Scheme
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摘要: 利用不經(jīng)意多項式估值協(xié)議，該文提出了一種新的非對稱公鑰叛逆者追蹤方案。當參與共謀的叛逆者數(shù)量不超過預先設(shè)置的范圍時，與現(xiàn)有的非對稱公鑰追蹤方案相比，該方案能夠以完全的黑盒子追蹤方式準確地確定出全部叛逆者；借助于密鑰更新，該方案具有完善的撤銷性，能夠撤銷任意數(shù)量的叛逆者。此外，與已有方案相比該方案顯著降低了追蹤時的計算量并且有著更高的傳輸效率。
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關(guān)鍵詞:
- 保密通信;黑盒子追蹤性;可撤銷的;不經(jīng)意多項式估值;追蹤叛逆者
Abstract: Based on oblivious polynomial evaluation, this paper presents a new asymmetric public-key traitor tracing scheme. Compared with the previous schemes, this proposed scheme can accurately determine a or all traitor(s) from an illegal decoder by full black-box tracing when the number of traitors participating conspiracy is not larger than the defined number; and revoke unlimited traitors by means of the way of updating secret key. Moreover, this proposed scheme greatly decreases the computational cost of tracing a traitor and has a higher transmission efficiency compared with those of available. -
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