LIP-PA: A Logistics Information Privacy Protection Scheme with Position and Attribute-Based Access Control on Mobile Devices

Algorithm 5

Logistics information retrieval.

Input: ciphertext

Output: logistics information

1: Courier executes:

2: I-PBKE

3:

4:

5: if   satisfies   then

6:   node of access tree

7:  

8:  

9: end if

10: return logistics information