Academia.eduAcademia.edu

Figure 5 – uploaded by sahil kumar

See full PDFdownloadDownload figure
FIGURE 5. Uploading data to the public cloud, outside the network. The phase of uploading data to the public cloud from outside the network is illustrated in Figure 5.

Figure 5 Uploading data to the public cloud, outside the network. The phase of uploading data to the public cloud from outside the network is illustrated in Figure 5.

Related Figures (8)

FIGURE 1. A topological ordering of a directed graph including self-loop based on the security policy defined by the data owner.
FIGURE 1. A topological ordering of a directed graph including self-loop based on the security policy defined by the data owner.
FIGURE 2. The system preparation phase.
FIGURE 2. The system preparation phase.
FIGURE 3. KEU operations phase.
FIGURE 3. KEU operations phase.
FIGURE 4. Uploading data to the public cloud, inside the network.
FIGURE 4. Uploading data to the public cloud, inside the network.
FIGURE 6. Downloading data from the public cloud, inside the network.
FIGURE 6. Downloading data from the public cloud, inside the network.
FIGURE 7. Downloading data from the public cloud, outside the network. Suppose that a user outside the network wants to download encrypted data from the public cloud.
FIGURE 7. Downloading data from the public cloud, outside the network. Suppose that a user outside the network wants to download encrypted data from the public cloud.
FIGURE 8. The secret key derivation phase. (1) The user/requester sends a request to access the key. (2) CG sends a request for the user/requester. (3) KEU send requests to receive sufficient approval from other users within the same organization unit. (4) Users send replies (approval or rejection). (5) KEU sends the key components. (6) CG sends the secret key.
FIGURE 8. The secret key derivation phase. (1) The user/requester sends a request to access the key. (2) CG sends a request for the user/requester. (3) KEU send requests to receive sufficient approval from other users within the same organization unit. (4) Users send replies (approval or rejection). (5) KEU sends the key components. (6) CG sends the secret key.
TABLE 1. Sample key access control scheme in organization. In our proposed scheme, the key derivation involves con- structing interpolating polynomial and finding a value of the polynomial. Newton‘s interpolation method is utilized to process the interpolation, and Horner‘s rule is applied to derive a secret key by performing the polynomial operation more efficiently, and at minimal cost [44].
TABLE 1. Sample key access control scheme in organization. In our proposed scheme, the key derivation involves con- structing interpolating polynomial and finding a value of the polynomial. Newton‘s interpolation method is utilized to process the interpolation, and Horner‘s rule is applied to derive a secret key by performing the polynomial operation more efficiently, and at minimal cost [44].
Related topics:
Computer ScienceCryptographyDirected graphsCloud Computing SecurityDirected acyclic graphsSecurity in Cloud ComputingMission-Critical Systems
580 California St., Suite 400
San Francisco, CA, 94104
© 2025 Academia. All rights reserved