{
  "abstract": "We prove that quantum blind-unforgeability implies quantum plus-one unforgeability, settling an open question in the literature. Since plus-one unforgeability is known not to imply blind-unforgeability, our result establishes that blind-unforgeability is \\emph{strictly stronger} than plus-one unforgeability in the quantum setting. The implication is proven using a new \\emph{smoothing} technique that coherently rescales the query histories of a quantum-query algorithm in a black-box manner. This enables us to transform any successful plus-one attacker into a blind-unforgeability attacker with only inverse-polynomial loss. Our proof represents a conceptual shift from merely extracting a useful query history as in earlier attempts, which we show inevitably fails in general, to first coherently reshaping how query histories interfere.",
  "abstract_shown": true,
  "affiliations": [],
  "article_type": null,
  "arxiv": "2610.00517",
  "author_total": 3,
  "authors": [
    {
      "name": "Mehil Agarwal"
    },
    {
      "name": "Calliope S. Reimann"
    },
    {
      "name": "Fang Song"
    }
  ],
  "bibtex": "https://research.draconitic.com/paper/2n2b6bv5qsb4j.bib",
  "cited_by": 0,
  "doi": "10.48550/arxiv.2610.00517",
  "fulltext_url": null,
  "id": "2n2b6bv5qsb4j",
  "issns": [],
  "landing_url": "https://arxiv.org/abs/2610.00517",
  "language": null,
  "licence": "LicenseRef-arXiv-nonexclusive-1.0",
  "licence_label": "arXiv licence",
  "licence_source": "article",
  "licence_url": "http://arxiv.org/licenses/nonexclusive-distrib/1.0/",
  "metadata_licence": "CC0-1.0",
  "native_subjects": [
    [
      "arxiv",
      "cs.CR"
    ],
    [
      "arxiv",
      "quant-ph"
    ]
  ],
  "openalex": null,
  "pdf_url": "https://arxiv.org/pdf/2610.00517",
  "pmcid": null,
  "pmid": null,
  "published": "2026-10-01",
  "publisher": null,
  "ris": "https://research.draconitic.com/paper/2n2b6bv5qsb4j.ris",
  "sources": [
    {
      "first_seen": "2026-10-30T12:26:03Z",
      "native_id": "2610.00517",
      "source": "arxiv",
      "url": "https://arxiv.org/abs/2610.00517"
    }
  ],
  "subjects": [
    {
      "field": "physics",
      "origin": "arxiv:quant-ph",
      "subfield": "quantum"
    }
  ],
  "title": "Blind Unforgeability implies Plus-One Unforgeability",
  "title_text": "Blind Unforgeability implies Plus-One Unforgeability",
  "type": "preprint",
  "updated_at": "2026-10-30T12:26:03Z",
  "url": "https://research.draconitic.com/paper/2n2b6bv5qsb4j",
  "venue": "arXiv",
  "versions": []
}