By deuterium.

Original description

Python is so slow! Lets use nUmPy tO MAkE iT FaSTer. Only if there was a module for crypto in it :(

Read this challenge as plain text or JSON.

Files

• challenge.py
• Fixed instance (output.txt)

This is the original two-layer encryption challenge. The Wiki Mersenne practice variant uses one layer and has a different flag.

This fixed output was generated for the post with the unchanged original program and event flag. It is not a recording from the competition.

Try the local practice variant. Its flag check is separate from this event challenge.

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mkdir -p zh3r0-2021-import-numpy-as-mt
cd zh3r0-2021-import-numpy-as-mt
curl --fail --location --output challenge.txt \
  "https://deut-erium.github.io/challenges/zh3r0-2021/import-numpy-as-mt/challenge.txt"
curl --fail --location --output challenge.json \
  "https://deut-erium.github.io/challenges/zh3r0-2021/import-numpy-as-mt/challenge.json"
curl --fail --location --output challenge.py \
  "https://deut-erium.github.io/assets/challenges/zh3r0-2021-import-numpy-as-mt/challenge.py"
curl --fail --location --output output.txt \
  "https://deut-erium.github.io/assets/challenges/zh3r0-2021-import-numpy-as-mt/output.txt"

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Sources and solutions (spoilers)

• Full archive (may contain flags).
• Solution
• Original description or source

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