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EMSS: Efficient Multi-chained Stream Signature

 

TESLAdoes not provide non-repudiation. Most multimedia applications do not need non-repudiation since they discard the data after it is decoded and played. Stream signature schemes are still important, however, for the following two cases. First, some applications really do need continuous non-repudiation of each data packet, but we could not find a compelling example. Second, and more importantly, in settings where time synchronization is difficult, TESLAmight not work. We present EMSS(Efficient Multi-chained Stream Signature), to achieve non-repudiation which also achieves sender authentication.

The requirements for our stream signature scheme are as follows:




next up previous
Next: Our Basic Signature Scheme Up: Efficient Authentication and Signing Previous: Performance

Adrian Perrig
Sat Sep 2 17:01:14 PDT 2000