Li et al. first proposed a quantum hash function (QHF) in a quantum-walk
architecture. In their scheme, two two-particle interactions, i.e.,
and Beijing Natural Science Foundation(Grant)
the National Natural Science Foundation of China(Grant)
This work was supported by the National Natural Science Foundation of China (Grant Nos. 61572053, 61671087, U1636106, and 61602019), and Beijing Natural Science Foundation (Grant No. 4162005).
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Figure 1
Circuit representation of the unitary operation at the
Figure 2
(Color online) Hash values of C1, C2, C3, C4, C5.
Figure 3
Circuit representation of the unitary operation at the
Figure 4
(Color online) Hash values of C1, C2, C3, C4, C5.
Mean | ||||
38.8545 | 38.5542 | 38.5839 | 38.6642 | |
69.2021 | 69.2085 | 69.1016 | 69.1707 | |
108.0566 | 107.7627 | 107.6855 | 107.8349 | |
48.8944 | 48.7614 | 48.7265 | 48.7941 | |
Δ | 6.9318 | 6.4671 | 6.4822 | 6.6270 |
Δ | 3.1366 | 2.9263 | 2.9331 | 2.9987 |
Mean | ||||
41.4688 | 41.3569 | 42.5407 | 41.7888 | |
70.2764 | 70.1060 | 70.2384 | 70.2069 | |
111.7452 | 111.4629 | 112.7791 | 111.9957 | |
50.5634 | 50.4357 | 51.0313 | 50.6768 | |
Δ | 7.8213 | 8.5069 | 8.2029 | 8.1770 |
Δ | 3.5391 | 3.8493 | 3.7117 | 3.7000 |
No collision | One collision | Two collisions | More collisions | |
ref. | 7688 | 375 | 1662 | 275 |
ref. | 9367 | 617 | 16 | 0 |
ref. | 9068 | 889 | 42 | 1 |
Our first scheme | 9914 | 86 | 0 | 0 |
Our second scheme | 9854 | 71 | 0 | 75 |
The number of the particles | Quantum operation | The number of message bits | |
ref. | 2 | 1 | |
ref. | 2 | 1 | |
ref. | 1 | 1 | |
Our first scheme | 1 | 2 | |
Our second scheme | 1 | 3 |
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