Dynamic Searchable Symmetric Encryption (DSSE) is pivotal for secure search over encrypted data in cloud storage. DSSE allows clients to delegate keyword search operations to a server while maintaining data confidentiality. Existing DSSE solutions prioritize strong security measures, including forward and Type-I-backward security, to mitigate information leakage to servers. However, these solutions often overlook robustness against irrational client queries, such as duplicate operations or deletion of non-existent entries, which can compromise search correctness. To address these challenges, this paper introduces two new DSSE schemes, SR-DSSE a  and SR-DSSE b, ensuring both forward and Type-I-backward security while enhancing robustness. These schemes are designed to maintain search correctness and stable security even in the presence of unintended client errors. The proposed schemes utilize AES encryption for securing patient reports, illustrating their applicability in healthcare scenarios involving doctors, patients, trusted authorities, and cloud servers.

Keywords: DSSE, Doctor, Patient, Cloud Server, Trusted Authority, AES, Encryption, Decryption.