On Finding Quantum Multi-collisions
On Finding Quantum Multi-collisions
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DOI:
10.1007/978-3-030-17659-4_7
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发表时间:
2018-11
期刊:
影响因子:
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通讯作者:
Qipeng Liu;Mark Zhandry
中科院分区:
文献类型:
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作者:
Qipeng Liu;Mark Zhandry
Ak-collision for a compressing hash functionHis a set ofkdistinct inputs that all map to the same output. In this work, we show that for any constantk,quantum queries are both necessary and sufficient to achieve ak-collision with constant probability. This improves on both the best prior upper bound (Hosoyamada et al., ASIACRYPT 2017) and provides the first non-trivial lower bound, completely resolving the problem.