Speech Encryption Scheme Based on Ciphertext Policy Hierarchical Attribute in Cloud Storage

<div>Comparison of the efficiency of the scheme in this article and Sethi’s scheme (2020). (a) Comparison of key generation efficiency. (b) Comparison of encryption efficiency. (c) Comparison of decryption efficiency.</div>

Security and Communication Networks

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Figure 5

Figure 5: Speech Encryption Scheme Based on Ciphertext Policy Hierarchical Attribute in Cloud Storage 