On-the-fly verification of rateless erasure codes for efficient content distribution
On-the-fly verification of rateless erasure codes for efficient content distribution
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DOI：
10.1109/secpri.2004.1301326
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发表时间：
2004-05
期刊：
影响因子：
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通讯作者：
Maxwell N. Krohn;M. Freedman;David Mazières
中科院分区：
文献类型：
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作者：
Maxwell N. Krohn;M. Freedman;David Mazières
当恶意参与者故意破坏内容时，点对点内容分发的质量可能会受到影响。一些使用简单的逐块下载的系统可以用传统的加密签名和散列来验证块，但是这些技术不能很好地应用于使用无速率擦除码来进行高效多播传输的更优雅的系统。本文提出了一种实用的方案，基于同态散列，使下载器执行的擦除编码块的飞行验证。
The quality of peer-to-peer content distribution can suffer when malicious participants intentionally corrupt content. Some systems using simple block-by-block downloading can verify blocks with traditional cryptographic signatures and hashes, but these techniques do not apply well to more elegant systems that use rateless erasure codes for efficient multicast transfers. This paper presents a practical scheme, based on homomorphic hashing, that enables a downloader to perform on-the-fly verification of erasure-encoded blocks.