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FSS protocol primitives: provenance, integrity, auth, FIT

Project description

fss-core

PyPI Python License: MIT OpenSSF Scorecard

Protocol primitives for the Forensic Software Standards (FSS) series. Used by FSS-compliant forensic tool providers to produce auditable, signed provenance records on every tool invocation.

What it provides

  • provenance — construct and sign _provenance blocks (FSS-0004)
  • integrity — JCS (RFC 8785) canonical form and SHA-256 CAI hashes (FSS-0005)
  • errors — standard FSS error codes (FSS_AUTH_DENIED, FSS_RATE_LIMITED, …)
  • fss_context — context variables for investigation ID, FIT token, analyst identity

Install

pip install fss-core

# with JWT/Ed25519 auth support (L2+):
pip install "fss-core[auth]"

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