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Paper 2014/321

Efficient Quantum-Immune Keyless Signatures with Identity

Ahto Buldas and Risto Laanoja and Ahto Truu

Abstract

We show how to extend hash-tree based data signatures to server-assisted personal digital signature schemes. The new signature scheme does not use trapdoor functions and is based solely on cryptographic hash functions and is thereby, considering the current state of knowledge, resistant to quantum computational attacks. In the new scheme, we combine hash-tree data signature (time- stamping) solutions with hash sequence authentication mechanisms. We show how to implement such a scheme in practice.

Note: A remark added about the security of the signature scheme.

Metadata
Available format(s)
PDF
Publication info
Preprint. MINOR revision.
Keywords
digital signatureshash functions
Contact author(s)
ahto buldas @ guardtime com
risto laanoja @ guardtime com
History
2014-09-02: revised
2014-05-06: received
See all versions
Short URL
https://ia.cr/2014/321
License
Creative Commons Attribution
CC BY
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