Protecting a key does not automatically explain a request’s meaning.
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A secure pen can sign the wrong document just as effectively as the right one.
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From a public address to a verified signatureStep 1 / 4
An address is public receiving information. It is not the private key that authorizes actions.
An address is public receiving information. It is not the private key that authorizes actions.The local signing system uses secret authorization material. It produces a signature; the private key is not sent along with it.A verifier checks the signed request under the account’s rules. A valid signature does not by itself prove that the action is safe.Balances belong to network state. A wallet is an interface and signing system, not a box containing coins.
Animated local teaching model. No wallet, RPC or live blockchain data. Some labels and hashes are abbreviated for readability.
Separate key custody from intent
A hardware device can protect signing material while still producing a valid signature for the request you approve. If the request is harmful but authorized, secrecy of the key alone does not prevent its effect.
Inspect the trusted display
What you can verify depends on the device, software and request format. Check the network, recipient, value and permission scope where supported. A vague or unfamiliar prompt deserves explanation rather than automatic approval.
Contract calls can carry permissions
A zero-value call might authorize token spending or change control settings. A typed message can have later effects. Do not decide solely by whether a screen shows an immediate ETH transfer.
Recovery material is another boundary
A site claiming the device needs a phrase-based repair can be an attempt to bypass its key isolation. Follow official recovery procedures and keep actual secrets out of learning tools.
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Can a harmful authorization be validly signed while the private key remains secret?
The signed permission itself can be harmful, even when key material was never exposed.