DS Sign Download

This tool signs data artifacts by taking a base64-encoded file and a private key, then generating a verifiable signature using a chosen algorithm. It targets developers, data scientists, security engineers, and DevOps teams who prepare datasets, models, or configuration files for distribution. By producing a detached signature and an optional envelope containing the signed payload, it enables recipients to verify integrity and origin without modifying the artifact itself. The operation is local and self-contained, avoiding external signing services and ensuring control over keys and syntax. It supports common cryptographic standards and common file types.
Conceptually, the tool computes a digest of the input data and applies a cryptographic signature using the provided private key and algorithm (RSA-SHA256 or Ed25519). The result includes a base64-encoded signature and a base64-encoded signed artifact or a detached signature file, depending on configuration. This separation supports verifier workflows that fetch the data and signature separately. Core differentiators include local execution, explicit key material input, and support for both RSA and modern elliptic-curve schemes, making it suitable for software releases, data science pipelines, and compliance-ready distributions.
Typical use cases include signing datasets before publication, signing model artifacts in ML workflows, and adding a verifiable provenance tag to configuration packages. The tool emphasizes correctness of input formats (base64 data, PEM private keys) and provides explicit error signals for invalid keys, mismatched algorithms, or malformed base64. It does not manage certificates or host keys, and it does not implement verification logic beyond providing the signature and signed payload for downstream checks. Advanced options cover key_passphrase, timestamps, and envelope choices to meet organizational policies.