Tight Multi-User Security Bound of DbHtS
In CRYPTO’21, Shen et al. proved that Two-Keyed-DbHtS construction is secure up to 22n/3 queries in the multi-user setting independent of the number of users. Here the underlying double-block hash function H of the construction realized as the concatenation of two independent n-bit keyed hash funct...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | English |
| Published: |
Ruhr-Universität Bochum
2023-03-01
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| Series: | IACR Transactions on Symmetric Cryptology |
| Subjects: | |
| Online Access: | https://tosc.iacr.org/index.php/ToSC/article/view/10312 |