A New Constant-Size Accountable Ring Signature Scheme Without Random Oracles
| Autor: | Sudhakar Kumawat, Souradyuti Paul |
|---|---|
| Rok vydání: | 2018 |
| Předmět: |
060201 languages & linguistics
Discrete mathematics Ring (mathematics) Group (mathematics) Computer science 06 humanities and the arts 02 engineering and technology Group signature Identity (music) Random oracle Ring signature 0602 languages and literature 0202 electrical engineering electronic engineering information engineering 020201 artificial intelligence & image processing Constant (mathematics) Standard model (cryptography) |
| Zdroj: | Information Security and Cryptology ISBN: 9783319751597 Inscrypt |
| DOI: | 10.1007/978-3-319-75160-3_11 |
| Popis: | Accountable ring signature (ARS), introduced by Xu and Yung (CARDIS 2004), combines many useful properties of ring and group signatures. In particular, the signer in an ARS scheme has the flexibility of choosing an ad hoc group of users, and signing on their behalf (like a ring signature). Furthermore, the signer can designate an opener who may later reveal his identity, if required (like a group signature). In 2015, Bootle et al. (ESORICS 2015) formalized the notion and gave an efficient construction for ARS with signature-size logarithmic in the size of the ring. Their scheme is proven to be secure in the random oracle model. Recently, Russell et al. (ESORICS 2016) gave a construction with constant signature-size that is secure in the standard model. Their scheme is based on q-type assumptions (q-SDH). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|