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Open access
Date
2013Type
- Conference Paper
Abstract
The one-time pad, the mother of all encryption schemes, is well known to be information-theoretically secure, in contrast to most encryption schemes used in practice, which are at most computationally secure. In this paper, we focus on another, completely different aspect in which the one-time pad is superior to normal encryption, and which surfaces only when the receiver (not only the eavesdropper) is considered potentially dishonest, as can be the case in a larger protocol context in which encryption is used as a sub-protocol. For example, such a dishonest receiver (who is, say, coerced by the eavesdropper) can in normal encryption verifiably leak the message to the eavesdropper by revealing the secret key. While this leakage feature can provably not be avoided completely, it is more limited if the one-time pad is used. We use the constructive cryptography framework to make these statements precise. Show more
Permanent link
https://doi.org/10.3929/ethz-a-009978146Publication status
publishedExternal links
Book title
2013 IEEE International Symposium on Information TheoryPages / Article No.
Publisher
IEEEEvent
Organisational unit
02643 - Institut für Theoretische Informatik / Inst. Theoretical Computer Science03338 - Maurer, Ueli / Maurer, Ueli
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