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@stablelib/sha256

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@stablelib/sha256

SHA-256 cryptographic hash function

  • 2.0.0
  • latest
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  • npm
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382K
increased by13.62%
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What is @stablelib/sha256?

@stablelib/sha256 is a JavaScript library that provides a secure and efficient implementation of the SHA-256 cryptographic hash function. It is part of the StableLib collection of cryptographic libraries, which are designed to be fast, secure, and easy to use.

What are @stablelib/sha256's main functionalities?

Hashing a string

This feature allows you to hash a string using the SHA-256 algorithm. The code sample demonstrates how to create a new hash instance, update it with a string, and then obtain the digest in hexadecimal format.

const { Hash } = require('@stablelib/sha256');
const hash = new Hash();
hash.update(Buffer.from('Hello, world!'));
const digest = hash.digest();
console.log(Buffer.from(digest).toString('hex'));

Hashing a file

This feature allows you to hash the contents of a file using the SHA-256 algorithm. The code sample demonstrates how to create a read stream for a file, update the hash with each chunk of data, and then obtain the digest in hexadecimal format once the stream ends.

const { Hash } = require('@stablelib/sha256');
const fs = require('fs');
const hash = new Hash();
const stream = fs.createReadStream('path/to/file');
stream.on('data', (chunk) => hash.update(chunk));
stream.on('end', () => {
  const digest = hash.digest();
  console.log(Buffer.from(digest).toString('hex'));
});

Hashing with incremental updates

This feature allows you to hash data incrementally using the SHA-256 algorithm. The code sample demonstrates how to create a new hash instance, update it with multiple chunks of data, and then obtain the digest in hexadecimal format.

const { Hash } = require('@stablelib/sha256');
const hash = new Hash();
hash.update(Buffer.from('Hello, '));
hash.update(Buffer.from('world!'));
const digest = hash.digest();
console.log(Buffer.from(digest).toString('hex'));

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Package last updated on 29 Jun 2024

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