Sign and verify
- Signature
- Authenticity
- Integrity
- PLAY
- MANIPULATE
- UNDERSTAND
- INTEGRATE
01 /PLAY · Mission
Alice wants to authorize an action. Bob must be able to check it really is her — and that nothing changed.
02 / MANIPULATE — Sign, verify, then change the message or have someone else sign.
ALICE · expected signer
« I authorize action A. »
BOB · verifier
Nothing received yet.
Status
—
Simplified teaching model — Behavior simulation, not real cryptography. No key is generated: Alice, Bob and Mallory are fictional identifiers. In a real system, Bob verifies with Alice's public key without ever knowing her private key.
03 /UNDERSTAND
What you just observed
Handle the system: the explanation opens after the key moment.
Recommended after 3 experiments (0/3)