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| 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 | 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x 1x | 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";
import type { Addressable } from "../address/index.js";
import type { SignatureLike } from "../crypto/index.js";
import type { BigNumberish, Numeric } from "../utils/index.js";
export interface AuthorizationRequest {
address: string | Addressable;
nonce?: Numeric;
chainId?: BigNumberish;
}
/**
* Computes the [[link-eip-7702]] authorization digest to sign.
*/
export function hashAuthorization(auth: AuthorizationRequest): string {
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: AuthorizationRequest, sig: SignatureLike): string {
return recoverAddress(hashAuthorization(auth), sig);
}
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