[Feature]: Implement Git Secret Backend for Sensitive Values

[ritwik-g]

Title

[Feature]: Implement Git Secret Backend for Sensitive Values

Problem Statement

After implementing the GCS backend for sensitive values, we need to expand support to other popular secret management systems. Git Secret provides a way to store encrypted files in Git repositories, which is useful for teams already using Git for configuration management.

Proposed Solution

Implement a Git Secret backend for sensitive values:

1. Create a Git Secret backend implementation:

   • Implement GitSecretValueBackend class that extends the ValueBackend interface
   • Add integration with the git-secret tool
   • Implement secure storage and retrieval of sensitive values

2. Update the configuration schema:

   • Add Git Secret-specific configuration options to the backend_config schema
   • Document the required Git Secret setup and GPG configuration

3. Add CLI commands for Git Secret backend configuration:

   • Add options to configure Git repository paths and GPG keys
   • Support initialization and configuration of Git Secret

4. Update documentation:

   • Add user guide for configuring and using Git Secret
   • Add examples and best practices

Implementation Details

The implementation will:

1. Store sensitive values in Git Secret-encrypted files
2. Use reference-based approach where only references are stored in the config file
3. Support automatic retrieval of sensitive values when needed
4. Include proper error handling for Git Secret-specific errors
5. Add comprehensive tests for the Git Secret backend

Dependencies

This feature depends on the implementation of the base sensitive values support with the GCS backend.

Additional Context

This is part of a series of backend implementations for sensitive values, including:

• GCS
• AWS Secrets Manager
• Azure Key Vault
• HashiCorp Vault
• Git Secret

Each backend will be implemented as a separate task to maintain focus and allow for incremental releases.

Labels

• enhancement

Requirements

• This feature aligns with the project's scope and goals
• I've checked that this feature doesn't already exist
• I've searched for existing feature requests