@fioprotocol/fiojs
Version:
FioJS is a Utility SDK for packing, signing and encryption functionality for the FIO blockchain. It is used by the FIO TypeScript SDK
92 lines • 3.11 kB
JavaScript
;
var __createBinding = (this && this.__createBinding) || (Object.create ? (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
var desc = Object.getOwnPropertyDescriptor(m, k);
if (!desc || ("get" in desc ? !m.__esModule : desc.writable || desc.configurable)) {
desc = { enumerable: true, get: function() { return m[k]; } };
}
Object.defineProperty(o, k2, desc);
}) : (function(o, m, k, k2) {
if (k2 === undefined) k2 = k;
o[k2] = m[k];
}));
var __setModuleDefault = (this && this.__setModuleDefault) || (Object.create ? (function(o, v) {
Object.defineProperty(o, "default", { enumerable: true, value: v });
}) : function(o, v) {
o["default"] = v;
});
var __importStar = (this && this.__importStar) || function (mod) {
if (mod && mod.__esModule) return mod;
var result = {};
if (mod != null) for (var k in mod) if (k !== "default" && Object.prototype.hasOwnProperty.call(mod, k)) __createBinding(result, mod, k);
__setModuleDefault(result, mod);
return result;
};
Object.defineProperty(exports, "__esModule", { value: true });
exports.accountHash = void 0;
/**
* @module AccountName
*/
var bs58 = __importStar(require("bs58"));
var Long = __importStar(require("long"));
var PublicKey = require("./ecc").PublicKey;
/**
* Hashes a public key to a valid FIOIO account name.
*
* @arg {string} pubkey
* @return {string} valid FIOIO account name
*/
function accountHash(pubkey) {
if (!PublicKey.isValid(pubkey, "FIO")) {
throw new TypeError("invalid public key");
}
pubkey = pubkey.substring("FIO".length, pubkey.length);
var decoded58 = bs58.decode(pubkey);
var long = shortenKey(decoded58);
var output = stringFromUInt64T(long);
return output;
}
exports.accountHash = accountHash;
function shortenKey(key) {
var res = Long.fromValue(0, true);
var temp = Long.fromValue(0, true);
var toShift = 0;
var i = 1;
var len = 0;
while (len <= 12) {
// assert(i < 33, "Means the key has > 20 bytes with trailing zeroes...")
temp = Long.fromValue(key[i], true).and(len == 12 ? 0x0f : 0x1f);
if (temp == 0) {
i += 1;
continue;
}
if (len == 12) {
toShift = 0;
}
else {
toShift = (5 * (12 - len) - 1);
}
temp = Long.fromValue(temp, true).shiftLeft(toShift);
res = Long.fromValue(res, true).or(temp);
len += 1;
i += 1;
}
return res;
}
function stringFromUInt64T(temp) {
var charmap = ".12345abcdefghijklmnopqrstuvwxyz".split("");
var str = new Array(13);
str[12] = charmap[Long.fromValue(temp, true).and(0x0f)];
temp = Long.fromValue(temp, true).shiftRight(4);
for (var i = 1; i <= 12; i++) {
var c = charmap[Long.fromValue(temp, true).and(0x1f)];
str[12 - i] = c;
temp = Long.fromValue(temp, true).shiftRight(5);
}
var result = str.join("");
if (result.length > 12) {
result = result.substring(0, 12);
}
return result;
}
//# sourceMappingURL=accountname.js.map