Themis is an open-source high-level cryptographic services library designed to secure data across various stages including authentication, storage, messaging, and network exchange. The library addresses common data protection use cases by providing cryptographic features that can be implemented without requiring deep cryptographic expertise. Themis enables developers to integrate security measures into their applications while focusing on core application development. Key capabilities include: - Encryption of stored secrets such as API keys, session tokens, and files - Application-side field-level encryption for sensitive database fields - Support for searchable encryption, data tokenization, and data masking when used with Acra - Secure exchange of secrets between parties - Foundation for building secure communication applications The library is designed to handle typical data protection scenarios that most applications encounter, providing a standardized approach to implementing cryptographic security measures.