init

system/node_modules/ethers/src.ts/transaction/address.ts

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+import { getAddress } from "../address/index.js";
+import { keccak256, SigningKey } from "../crypto/index.js";
+
+import type { SignatureLike } from "../crypto/index.js";
+import type { BytesLike } from "../utils/index.js";
+
+/**
+ *  Returns the address for the %%key%%.
+ *
+ *  The key may be any standard form of public key or a private key.
+ */
+export function computeAddress(key: string | SigningKey): string {
+    let pubkey: string;
+    if (typeof(key) === "string") {
+        pubkey = SigningKey.computePublicKey(key, false);
+    } else {
+        pubkey = key.publicKey;
+    }
+    return getAddress(keccak256("0x" + pubkey.substring(4)).substring(26));
+}
+
+/**
+ *  Returns the recovered address for the private key that was
+ *  used to sign %%digest%% that resulted in %%signature%%.
+ */
+export function recoverAddress(digest: BytesLike, signature: SignatureLike): string {
+    return computeAddress(SigningKey.recoverPublicKey(digest, signature));
+}