@aws-sdk/hash-node

What is @aws-sdk/hash-node?

The @aws-sdk/hash-node package is part of the AWS SDK for JavaScript (v3) and is specifically designed for hashing functionalities within Node.js environments. It provides a set of utilities for generating hash digests of data. This can be particularly useful for creating secure, fixed-size representations of data for tasks such as validating the integrity of files, securely storing passwords, or implementing caching mechanisms.

What are @aws-sdk/hash-node's main functionalities?

Generating SHA-256 Hashes

This feature allows you to generate SHA-256 hash digests of data. The code sample demonstrates how to create a new Hash instance, update it with the data to be hashed, and then generate the digest.

const { Hash } = require('@aws-sdk/hash-node');
const hash = new Hash('sha256');
hash.update('data to hash');
const digest = await hash.digest();
console.log(digest);

Streaming Data Hashing

This feature is useful for hashing large files or streaming data. The code sample shows how to create a hash instance, stream a file, update the hash with chunks of the file, and finally generate the digest once the stream ends.

const { Hash } = require('@aws-sdk/hash-node');
const fs = require('fs');
const fileStream = fs.createReadStream('path/to/file');
const hash = new Hash('sha256');
fileStream.on('data', (chunk) => hash.update(chunk));
fileStream.on('end', async () => {
  const digest = await hash.digest();
  console.log(digest);
});

Other packages similar to @aws-sdk/hash-node

crypto

The 'crypto' module is a built-in Node.js module that provides cryptographic functionality that includes a set of wrappers for OpenSSL's hash, HMAC, cipher, decipher, sign, and verify functions. Unlike @aws-sdk/hash-node, it is built into Node.js and does not require an additional installation. It offers a wider range of cryptographic functions but might be more complex to use for simple hashing needs.

hasha

Hasha is a high-performance Node.js hashing module that makes it easy to create hash digests of data. It supports multiple algorithms and can hash strings, buffers, and streams. Compared to @aws-sdk/hash-node, hasha is more focused on simplicity and ease of use for hashing operations, without the broader AWS SDK context.

README

@aws-sdk/md5-node

An internal package

Usage

You probably shouldn't, at least directly.

Changelog

3.374.0 (2023-07-20)

Bug Fixes

• packages: fix migrated package imports (#4990) (d800f78)

Features

• client-codecatalyst: This release adds support for updating and deleting spaces and projects in Amazon CodeCatalyst. It also adds support for creating, getting, and deleting source repositories in CodeCatalyst projects. (05a9f89)
• client-connectcases: This release adds the ability to assign a case to a queue or user. (f47d6f4)
• client-lex-models-v2: This release updates type for Channel field in SessionSpecification and UtteranceSpecification (1f77d0a)
• client-route53resolver: This release adds support for Route 53 On Outposts, a new feature that allows customers to run Route 53 Resolver and Resolver endpoints locally on their Outposts. (8acc64c)
• client-s3: Improve performance of S3 clients by simplifying and optimizing endpoint resolution. (72eb598)
• client-sagemaker-featurestore-runtime: Cross account support for SageMaker Feature Store (b0593ab)
• client-sagemaker: Cross account support for SageMaker Feature Store (e4918c1)
• client-securitylake: Adding support for Tags on Create and Resource Tagging API. (596636d)
• client-transcribe: Added API argument --toxicity-detection to startTranscriptionJob API, which allows users to view toxicity scores of submitted audio. (9e7552a)
• smithy-client: update client defaults provider (830cb06)