Paper 2021/510

Signer and Message Ambiguity from a Variety of Keys

George Teseleanu

Abstract

A signer and message ambiguous signature enables a recipient to request a signer to sign a sensible message such that the signer cannot guess what message he signed and the receiver cannot deduce the signer's identity. In this work, we formalize this type of signature, introduce the corresponding security requirements and describe two instantions. The first one assumes that the signer hides his identity in $n$ independently generated public keys, while the second one assumes that all $n$ public keys share the same public parameters.

Metadata
Available format(s)
PDF
Category
Public-key cryptography
Publication info
Published elsewhere. Minor revision. SECRYPT 2021
Keywords
signer and message ambiguity1-out-of-n signatureoblivious signature
Contact author(s)
george teseleanu @ yahoo com
History
2021-04-23: received
Short URL
https://ia.cr/2021/510
License
Creative Commons Attribution
CC BY

BibTeX

@misc{cryptoeprint:2021/510,
      author = {George Teseleanu},
      title = {Signer and Message Ambiguity from a Variety of Keys},
      howpublished = {Cryptology ePrint Archive, Paper 2021/510},
      year = {2021},
      note = {\url{https://eprint.iacr.org/2021/510}},
      url = {https://eprint.iacr.org/2021/510}
}
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