This document proposes a Lightweight Data Sharing Scheme (LDSS) for mobile cloud computing that uses attribute-based encryption (ABE) to provide efficient access control over encrypted data. LDSS moves computationally intensive encryption and decryption operations from mobile devices to proxy servers to reduce the computational overhead on client devices. It also introduces attribute description fields and lazy re-encryption to reduce the overhead of user revocation. Experimental results show that LDSS can significantly reduce overhead for clients while introducing minimal additional costs on the server side, making it suitable for data sharing security in mobile applications.