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Add missing word to examples doc explainer

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John B Nelson 2020-09-11 09:32:15 -07:00 committed by John Bjorn Nelson
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commit 59533792b4
1 changed files with 5 additions and 6 deletions
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docs/examples/micropayment.rst
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@ -61,12 +61,11 @@ For a contract that fulfils payments, the signed message must include:
2. The amount to be transferred.
3. Protection against replay attacks.
A replay attack is when a signed message is reused to claim authorization for
a second action.
To avoid replay attacks we use the same as in Ethereum transactions
themselves, a so-called nonce, which is the number of transactions sent by an
account.
The smart contract checks if a nonce is used multiple times.
A replay attack is when a signed message is reused to claim
authorization for a second action. To avoid replay attacks
we use the same technique as in Ethereum transactions themselves,
a so-called nonce, which is the number of transactions sent by
an account. The smart contract checks if a nonce is used multiple times.
Another type of replay attack can occur when the owner
deploys a ``ReceiverPays`` smart contract, makes some