authorization.js•995 B
import { getAddress } from "../address/index.js";
import { keccak256 } from "../crypto/index.js";
import { recoverAddress } from "../transaction/index.js";
import { assertArgument, concat, encodeRlp, toBeArray } from "../utils/index.js";
/**
* Computes the [[link-eip-7702]] authorization digest to sign.
*/
export function hashAuthorization(auth) {
assertArgument(typeof (auth.address) === "string", "invalid address for hashAuthorization", "auth.address", auth);
return keccak256(concat([
"0x05", encodeRlp([
(auth.chainId != null) ? toBeArray(auth.chainId) : "0x",
getAddress(auth.address),
(auth.nonce != null) ? toBeArray(auth.nonce) : "0x",
])
]));
}
/**
* Return the address of the private key that produced
* the signature %%sig%% during signing for %%message%%.
*/
export function verifyAuthorization(auth, sig) {
return recoverAddress(hashAuthorization(auth), sig);
}
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