52 lines
1.7 KiB
JavaScript
52 lines
1.7 KiB
JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
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exports.verifyMessage = exports.hashMessage = void 0;
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const index_js_1 = require("../crypto/index.js");
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const index_js_2 = require("../constants/index.js");
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const index_js_3 = require("../transaction/index.js");
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const index_js_4 = require("../utils/index.js");
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/**
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* Computes the [[link-eip-191]] personal-sign message digest to sign.
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*
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* This prefixes the message with [[MessagePrefix]] and the decimal length
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* of %%message%% and computes the [[keccak256]] digest.
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*
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* If %%message%% is a string, it is converted to its UTF-8 bytes
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* first. To compute the digest of a [[DataHexString]], it must be converted
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* to [bytes](getBytes).
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*
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* @example:
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* hashMessage("Hello World")
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* //_result:
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*
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* // Hashes the SIX (6) string characters, i.e.
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* // [ "0", "x", "4", "2", "4", "3" ]
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* hashMessage("0x4243")
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* //_result:
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*
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* // Hashes the TWO (2) bytes [ 0x42, 0x43 ]...
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* hashMessage(getBytes("0x4243"))
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* //_result:
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*
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* // ...which is equal to using data
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* hashMessage(new Uint8Array([ 0x42, 0x43 ]))
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* //_result:
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*
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*/
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function hashMessage(message) {
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if (typeof (message) === "string") {
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message = (0, index_js_4.toUtf8Bytes)(message);
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}
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return (0, index_js_1.keccak256)((0, index_js_4.concat)([
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(0, index_js_4.toUtf8Bytes)(index_js_2.MessagePrefix),
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(0, index_js_4.toUtf8Bytes)(String(message.length)),
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message
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]));
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}
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exports.hashMessage = hashMessage;
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function verifyMessage(message, sig) {
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const digest = hashMessage(message);
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return (0, index_js_3.recoverAddress)(digest, sig);
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}
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exports.verifyMessage = verifyMessage;
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//# sourceMappingURL=message.js.map
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