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Текущая директория: /usr/lib/node_modules/bitgo/node_modules/ripple-binary-codec/dist
Просмотр файла: hashes.js
"use strict";
Object.defineProperty(exports, "__esModule", { value: true });
exports.transactionID = exports.sha512Half = exports.Sha512Half = void 0;
const hash_prefixes_1 = require("./hash-prefixes");
const types_1 = require("./types");
const binary_serializer_1 = require("./serdes/binary-serializer");
const sha512_1 = require("@xrplf/isomorphic/sha512");
/**
* Class for hashing with SHA512
* @extends BytesList So SerializedTypes can write bytes to a Sha512Half
*/
class Sha512Half extends binary_serializer_1.BytesList {
constructor() {
super(...arguments);
this.hash = sha512_1.sha512.create();
}
/**
* Construct a new Sha512Hash and write bytes this.hash
*
* @param bytes bytes to write to this.hash
* @returns the new Sha512Hash object
*/
static put(bytes) {
return new Sha512Half().put(bytes);
}
/**
* Write bytes to an existing Sha512Hash
*
* @param bytes bytes to write to object
* @returns the Sha512 object
*/
put(bytes) {
this.hash.update(bytes);
return this;
}
/**
* Compute SHA512 hash and slice in half
*
* @returns half of a SHA512 hash
*/
finish256() {
return Uint8Array.from(this.hash.digest().slice(0, 32));
}
/**
* Constructs a Hash256 from the Sha512Half object
*
* @returns a Hash256 object
*/
finish() {
return new types_1.Hash256(this.finish256());
}
}
exports.Sha512Half = Sha512Half;
/**
* compute SHA512 hash of a list of bytes
*
* @param args zero or more arguments to hash
* @returns the sha512half hash of the arguments.
*/
function sha512Half(...args) {
const hash = new Sha512Half();
args.forEach((a) => hash.put(a));
return hash.finish256();
}
exports.sha512Half = sha512Half;
/**
* Construct a transactionID from a Serialized Transaction
*
* @param serialized bytes to hash
* @returns a Hash256 object
*/
function transactionID(serialized) {
return new types_1.Hash256(sha512Half(hash_prefixes_1.HashPrefix.transactionID, serialized));
}
exports.transactionID = transactionID;
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