Research Article
Speech Encryption Algorithm Based on Nonorthogonal Quantum State with Hyperchaotic Keystreams
Table 5
Quality metrics comparison of encryption scheme with other methods.
| Method | Key length | keyspace | | NPCR | UACI |
| AES | 128,192,256 | | 0.009700 | 99.60327 | 33.4218 | Ref [22] | >264 | > | 0.00022 | 99.6399 | 33.8085 | Ref [23] | 744 | | 0.00121 | 99.6317 | 33.6781 | Ref [26] | > | | 0.00321 | 99.6317 | 33.6782 | [pro:meth] | > | | 0.000136 | 99.6320 | 33.6823 |
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