| 摘要: |
| 内容中心网络通过路由器缓存内容来提高网络的整体性能.为防止被污染的数据在网络中扩散，路由器需要对进入网络的内容进行验证.原始的验证机制需要对内容的数字签名进行非对称密钥解密操作，导致内容验证速度不能满足高速路由器的需求.提出了基于着色的快速内容验证机制，以减少内容验证的计算复杂度，加快内容的检测速度.该机制通过对第1次进入网络的正确内容进行着色操作以保证其正确性.被着色的内容再次进入网络时，路由器可以通过着色信息来快速验证内容的正确性，从而提高路由器的检测速度. |
| 关键词: 内容中心网络 数据污染 内容缓存 内容验证 着色 |
| DOI： |
| 分类号: |
| 基金项目:国家自然科学基金（61373143，61432009)；中国博士后科学基金（2015T80089)；高等学校博士学科点专项科研基金（20130002110084) |
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| Fast Content Verification for Named Data Networking |
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WANG Yi1,2, LIU Bin2
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1.Huawei Future Network Theory Laboratory, Hong Kong 999077, China;2.Department of Computer Science and Technology, Tsinghua University, Beijing 100084, China
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| Abstract: |
| Named Data Networking (NDN) improves the transfer efficiency by caching the contents in routers. To prevent polluted content from being spread in NDN, NDN routers should verify every content that is published in NDN. Since the verification scheme in NDN applies the asymmetric encryption algorithm to sign the content, the verification speed is too slow to satisfy the high speed requirement. This paper proposes a Staining-based verification scheme to improve the verification speed by reducing the computation complexity of the content verification. Staining-based verification scheme stains the content that is sent to the network for the first time; then when the stained content is sent to the network again, the router can utilize the staining information to verify this content. By replacing the asymmetric encryption algorithm with symmetric encryption algorithm, Staining-based scheme can improve the verification speed effectively. |
| Key words: named data networking polluted content cache content verification staining content |
