$ ctf42

The_Twitching_Patient

Crypto weight 24.51 No technique tags yet.
Difficulty Not rated yet

Patient 7F can't keep still.

The tremor is subtle — barely noticeable in any single signature. The ward collects consent forms. Hundreds of them. All signed. All slightly wrong in the same way.

In mathematics, even a twitch leaves a trace.

The asylum's digital consent system uses elliptic curve signatures. The signing process has a flaw in how randomness is generated.

Each signature leaks a small bias in the nonce. Alone, it means nothing. Together, they whisper the private key.

You may request up to 200 signatures. Use them wisely.

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