36 lines
890 B
Rust
36 lines
890 B
Rust
use ethers::{
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contract::{Eip712, EthAbiType},
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core::types::transaction::eip712::Eip712,
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types::{Address, U256},
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};
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// Generate the EIP712 permit hash to sign for a Uniswap V2 pair.
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// https://eips.ethereum.org/EIPS/eip-712
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// https://eips.ethereum.org/EIPS/eip-2612
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#[derive(Eip712, EthAbiType, Clone)]
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#[eip712(
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name = "Uniswap V2",
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version = "1",
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chain_id = 1,
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verifying_contract = "0xB4e16d0168e52d35CaCD2c6185b44281Ec28C9Dc"
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)]
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struct Permit {
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owner: Address,
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spender: Address,
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value: U256,
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nonce: U256,
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deadline: U256,
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}
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fn main() {
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let permit = Permit {
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owner: Address::random(),
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spender: Address::random(),
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value: 100.into(),
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nonce: 0.into(),
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deadline: U256::MAX,
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};
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let permit_hash = permit.encode_eip712().unwrap();
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println!("Permit hash: 0x{}", hex::encode(permit_hash));
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}
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