SessionKey handshake for V1-initial S7-1200 PLCs#761
Open
gijzelaerr wants to merge 1 commit into
Open
Conversation
Adds the full session_auth package (HarpoS7 port) for V1-initial S7-1200 PLCs that require a SessionKey handshake before data operations: - s7/session_auth/: Public-key-based session authentication (Family 0 key derivation, fingerprint matching, SecurityKeyEncryptedKey blob generation, legitimation challenge solver, HMAC key derivation) - V3 HMAC framing for post-auth data operations - TIA-style CreateObject attributes (required by V1-initial firmware) - PAOM string stripping in ServerSessionVersion echo - Post-auth legitimation flow (challenge read + solved blob write) - Connection.connect(password=) parameter for auth flow Co-Authored-By: Claude Opus 4.6 (1M context) <noreply@anthropic.com>
3 tasks
![github-advanced-security[bot]](https://avatars.githubusercontent.com/in/57789?s=60&v=4){kind=small}
This file contains hidden or bidirectional Unicode text that may be interpreted or compiled differently than what appears below. To review, open the file in an editor that reveals hidden Unicode characters.
Learn more about bidirectional Unicode characters
Sign up for free
to join this conversation on GitHub.
Already have an account?
Sign in to comment
2 participants
Add this suggestion to a batch that can be applied as a single commit.This suggestion is invalid because no changes were made to the code.Suggestions cannot be applied while the pull request is closed.Suggestions cannot be applied while viewing a subset of changes.Only one suggestion per line can be applied in a batch.Add this suggestion to a batch that can be applied as a single commit.Applying suggestions on deleted lines is not supported.You must change the existing code in this line in order to create a valid suggestion.Outdated suggestions cannot be applied.This suggestion has been applied or marked resolved.Suggestions cannot be applied from pending reviews.Suggestions cannot be applied on multi-line comments.Suggestions cannot be applied while the pull request is queued to merge.Suggestion cannot be applied right now. Please check back later.
Replaces #724 (GitHub's PR ref got stuck after force-push conflict resolution).
Summary
Adds the full
session_authpackage for V1-initial S7-1200 PLCs that require a SessionKey handshake before data operations:s7/session_auth/: Public-key-based session authentication (Family 0 key derivation, fingerprint matching, SecurityKeyEncryptedKey blob generation, legitimation challenge solver, HMAC key derivation)Connection.connect(password=)parameter for auth flowTest plan
Known limitations
01:prefix) public keys are includedsend_requestneeds V3 HMAC framing wired in for data operations