Hash channels

Chuan Kun Wu

doi:10.1016/j.cose.2005.04.007

Hash channels

Chuan Kun Wu^*

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

6 Citations (Scopus)

Abstract

It is believed that in authentication protocols where no random numbers are involved, it is hard to introduce subliminal channels. In this paper we show that subliminal channels exist in digital signature schemes where no random numbers are used. The source where the subliminal channels exist is widely acceptable hash functions with their outputs being of some randomness. Because the subliminal channels are established by using hash functions, the subliminal channels are called hash channels in this paper. This indicates that there exist subliminal channels in any authentication protocols that use hash functions.

Original language	English
Pages (from-to)	653-661
Number of pages	9
Journal	Computers and Security
Volume	24
Issue number	8
DOIs	https://doi.org/10.1016/j.cose.2005.04.007
Publication status	Published - Nov 2005

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10.1016/j.cose.2005.04.007

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title = "Hash channels",

abstract = "It is believed that in authentication protocols where no random numbers are involved, it is hard to introduce subliminal channels. In this paper we show that subliminal channels exist in digital signature schemes where no random numbers are used. The source where the subliminal channels exist is widely acceptable hash functions with their outputs being of some randomness. Because the subliminal channels are established by using hash functions, the subliminal channels are called hash channels in this paper. This indicates that there exist subliminal channels in any authentication protocols that use hash functions.",

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AB - It is believed that in authentication protocols where no random numbers are involved, it is hard to introduce subliminal channels. In this paper we show that subliminal channels exist in digital signature schemes where no random numbers are used. The source where the subliminal channels exist is widely acceptable hash functions with their outputs being of some randomness. Because the subliminal channels are established by using hash functions, the subliminal channels are called hash channels in this paper. This indicates that there exist subliminal channels in any authentication protocols that use hash functions.

KW - Digital signature

KW - Hash function

KW - Subliminal channel

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M3 - Article

SN - 0167-4048

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SP - 653

EP - 661

JO - Computers and Security

JF - Computers and Security

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ER -

Hash channels

Abstract

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