Formalizing Hash-then-Sign Signatures
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Author / Producer
Date
2024
Publication Type
Conference Paper
ETH Bibliography
yes
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Abstract
Many practical signature schemes follow the Hash-then-Sign (HtS) paradigm: Instead of signing messages directly, messages are first hashed and then their hash values are signed. Attractive properties of the HtS approach include that the core signing algorithm does not have to get involved with handling arbitrarily long message inputs, and that the tasks of hashing and signing can be performed by different entities. For instance, if a signing algorithm is implemented in a smartcard setting, then an HtS scheme can allow sending only the hash value to the smartcard, instead of the whole message.
Permanent link
Publication status
published
External links
Book title
Public-Key Cryptography – PKC 2024
Journal / series
Volume
14601
Pages / Article No.
289 - 315
Publisher
Springer
Event
27th IACR International Conference on Practice and Theory of Public Key Cryptography (PKC 2024)
Edition / version
Methods
Software
Geographic location
Date collected
Date created
Subject
Digital Signature; Hash-then-Sign; Smartcard; Implementation
Organisational unit
Notes
Conference Presentation held on April 16, 2024.