What is @aws-sdk/hash-blob-browser?
@aws-sdk/hash-blob-browser is a package from the AWS SDK for JavaScript that provides utilities for computing cryptographic hashes of Blob objects in a browser environment. This is particularly useful for tasks such as data integrity checks, digital signatures, and other cryptographic operations.
What are @aws-sdk/hash-blob-browser's main functionalities?
Compute SHA-256 Hash
This feature allows you to compute the SHA-256 hash of a Blob object. The code sample demonstrates how to create a new Sha256 instance, update it with the Blob data, and then compute the digest.
const { Sha256 } = require('@aws-sdk/hash-blob-browser');
async function computeSHA256(blob) {
const hash = new Sha256();
hash.update(blob);
const digest = await hash.digest();
return digest;
}
// Usage example
const blob = new Blob(['Hello, world!']);
computeSHA256(blob).then(digest => console.log(digest));
Compute MD5 Hash
This feature allows you to compute the MD5 hash of a Blob object. The code sample demonstrates how to create a new Md5 instance, update it with the Blob data, and then compute the digest.
const { Md5 } = require('@aws-sdk/hash-blob-browser');
async function computeMD5(blob) {
const hash = new Md5();
hash.update(blob);
const digest = await hash.digest();
return digest;
}
// Usage example
const blob = new Blob(['Hello, world!']);
computeMD5(blob).then(digest => console.log(digest));
Other packages similar to @aws-sdk/hash-blob-browser
crypto-js
crypto-js is a widely-used library that provides a variety of cryptographic algorithms for JavaScript, including MD5, SHA-1, SHA-256, and more. Unlike @aws-sdk/hash-blob-browser, crypto-js is not specifically designed for Blob objects but can be used for general-purpose cryptographic operations.
js-sha256
js-sha256 is a lightweight library that provides a simple API for computing SHA-256 hashes in JavaScript. It is smaller and more focused than @aws-sdk/hash-blob-browser, making it a good choice for projects that only require SHA-256 hashing.
spark-md5
spark-md5 is a fast and efficient library for computing MD5 hashes in JavaScript. It is optimized for large files and can process data in chunks, making it a good alternative to @aws-sdk/hash-blob-browser for MD5 hashing.