Ordered Multi-Signatures with Public-Key Aggregation from SXDH Assumption
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arXiv
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| Auteurs principaux: | , |
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| Format: | Preprint |
| Publié: |
2025
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| _version_ | 1866914050696282112 |
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| author | Tezuka, Masayuki Tanaka, Keisuke |
| author_facet | Tezuka, Masayuki Tanaka, Keisuke |
| contents | An ordered multi-signature scheme allows multiple signers to sign a common message in a sequential manner and allows anyone to verify the signing order of signers with a public-key list. In this work, we propose an ordered multi-signature scheme by modifying the sequential aggregate signature scheme by Chatterjee and Kabaleeshwaran (ACISP 2020). Our scheme offers compact public parameter size and the public-key aggregation property. This property allows us to compress a public-key list into a short aggregated key. We prove the security of our scheme under the symmetric external Diffie-Hellman (SXDH) assumption without the random oracle model. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2509_17709 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Ordered Multi-Signatures with Public-Key Aggregation from SXDH Assumption Tezuka, Masayuki Tanaka, Keisuke Cryptography and Security An ordered multi-signature scheme allows multiple signers to sign a common message in a sequential manner and allows anyone to verify the signing order of signers with a public-key list. In this work, we propose an ordered multi-signature scheme by modifying the sequential aggregate signature scheme by Chatterjee and Kabaleeshwaran (ACISP 2020). Our scheme offers compact public parameter size and the public-key aggregation property. This property allows us to compress a public-key list into a short aggregated key. We prove the security of our scheme under the symmetric external Diffie-Hellman (SXDH) assumption without the random oracle model. |
| title | Ordered Multi-Signatures with Public-Key Aggregation from SXDH Assumption |
| topic | Cryptography and Security |
| url | https://arxiv.org/abs/2509.17709 |