Cryptology ePrint Archive: Report 2019/671

A Server-Assisted Hash-Based Signature Scheme

Ahto Buldas and Risto Laanoja and Ahto Truu

Abstract: We present a practical digital signature scheme built from a cryptographic hash function and a hash-then-publish digital time- stamping scheme. We also provide a simple proof of existential unforgeability against adaptive chosen-message attack (EUF-ACM) in the random oracle (RO) model.

Category / Keywords: cryptographic protocols / digital signatures, hash functions, public-key cryptography

Original Publication (in the same form): NordSec 2017

Date: received 6 Jun 2019

Contact author: ahto truu at guardtime com

Available format(s): PDF | BibTeX Citation

Version: 20190606:114012 (All versions of this report)

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