LFSR-102 Clarify README security limitations and API usage

[Abdelrahman-Elshahed]

Jira Ticket

LFSR-102 — Clarify the project's security limitations and API usage in README

Implementation Summary

Updated README.md to remove the cryptographically secure claim, add Security Limitations explaining deterministic LFSR output and non-production use, and document FastAPI /api/encrypt and /api/decrypt endpoints with required form fields.

Commit

129df26d0a36b764929c9e2d638c84f6125248fa

Evaluation Summary

Passed. Cloned the public repository branch dify/lfsr-102 and verified HEAD is the expected commit 129df26d0a36b764929c9e2d638c84f6125248fa. The diff against fetched main changes only README.md. The README removes the prior "cryptographically secure" wording, adds clearly titled "API Endpoints" and "Security Limitations" sections, documents POST /api/encrypt with image, seed, and tap_positions, documents POST /api/decrypt with encryption_id plus image or encrypted_base64 input, and explicitly states LFSR output is deterministic and the project must not be used for sensitive/confidential/production data. No application code, notebooks, images, or dependencies were changed.

Evaluator Test Report

Repository verification:

• git clone --depth 1 --branch dify/lfsr-102 https://github.com/Abdelrahman-Elshahed/LFSR_Image_Encryption_Project repo
• git rev-parse HEAD => 129df26d0a36b764929c9e2d638c84f6125248fa
• git branch --show-current => dify/lfsr-102

Diff inspection:

• git fetch --depth 1 origin main:refs/remotes/origin/main
• git diff --name-only origin/main HEAD => README.md
  • Note: origin/main...HEAD had no merge base in the depth-1 clone, so two-dot comparison to fetched origin/main was used for file/content verification.

Acceptance checks:

• grep -i "cryptographically secure" README.md => no occurrences
• README.md contains ## API Endpoints and ## Security Limitations
• README.md documents POST /api/encrypt with image, seed, tap_positions
• README.md documents POST /api/decrypt with encryption_id and image/encrypted_base64 input
• README.md states LFSR output is deterministic and warns not to protect sensitive/confidential/production data

Machine checks:

• git diff --check FETCH_HEAD HEAD => PASS (no output)
• python -m compileall LFSR_Encryption.py backend/app.py frontend/app.py => PASS

  Compiling 'LFSR_Encryption.py'...
  Compiling 'backend/app.py'...
  Compiling 'frontend/app.py'
  

[Copilot]

Pull request overview

Updates project documentation to more accurately set expectations about LFSR security and to document the FastAPI encryption/decryption endpoints for users integrating via API.

Changes:

• Removes the “cryptographically secure” claim and reframes the project as a demonstration.
• Adds an “API Endpoints” section documenting POST /api/encrypt and POST /api/decrypt form fields.
• Adds a “Security Limitations” section warning against production/sensitive use due to deterministic LFSR output.

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