To implement data encryption at rest and in transit for Azure Table Storage, follow these steps:
1. Enable Storage Service Encryption (SSE) for data at rest by navigating to the Azure portal, selecting your storage account, and enabling SSE under the “Encryption” settings. This ensures that all data written to Azure Table Storage is encrypted automatically using Azure-managed keys.
2. For client-side encryption, use Azure Storage Client Library or SDKs to encrypt sensitive data before storing it in Table Storage. Implement a custom encryption strategy using symmetric or asymmetric algorithms like AES or RSA, respectively.
3. Store encryption keys securely, preferably in Azure Key Vault, which provides secure key management and access control features.
4. To ensure data encryption in transit, enforce HTTPS connections when accessing Table Storage. Configure your application to use HTTPS while connecting to the storage account by setting the “DefaultEndpointsProtocol” property to “https” in the connection string.
5. Use Shared Access Signatures (SAS) with limited permissions and expiry times to provide secure access to specific resources within your Table Storage.
6. Regularly monitor and audit access logs to detect any unauthorized access attempts or security breaches.
