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@aws-crypto/kms-keyring

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@aws-crypto/kms-keyring

The AWS Encryption SDK for JavaScript is a client-side encryption library designed to make it easy for everyone to encrypt and decrypt data using industry standards and best practices. It uses a data format compatible with the AWS Encryption SDKs in other

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What is @aws-crypto/kms-keyring?

@aws-crypto/kms-keyring is an npm package that provides key management and cryptographic operations using AWS Key Management Service (KMS). It allows developers to encrypt and decrypt data using AWS KMS keys, making it easier to manage encryption keys and secure data in AWS environments.

What are @aws-crypto/kms-keyring's main functionalities?

Encrypt Data

This feature allows you to encrypt data using a specified AWS KMS key. The code sample demonstrates how to create a KMS keyring and use it to encrypt a plaintext string.

const { KmsKeyringNode } = require('@aws-crypto/kms-keyring');
const { encrypt } = require('@aws-crypto/client-node');

const keyring = new KmsKeyringNode({ generatorKeyId: 'arn:aws:kms:us-west-2:123456789012:key/abcd-1234-efgh-5678' });
const plaintext = 'Hello, World!';

async function encryptData() {
  const { result } = await encrypt(keyring, plaintext);
  console.log('Encrypted data:', result);
}

encryptData();

Decrypt Data

This feature allows you to decrypt data that was previously encrypted using an AWS KMS key. The code sample demonstrates how to create a KMS keyring and use it to decrypt an encrypted string.

const { KmsKeyringNode } = require('@aws-crypto/kms-keyring');
const { decrypt } = require('@aws-crypto/client-node');

const keyring = new KmsKeyringNode({ generatorKeyId: 'arn:aws:kms:us-west-2:123456789012:key/abcd-1234-efgh-5678' });
const encryptedData = '...'; // Encrypted data from previous example

async function decryptData() {
  const { plaintext } = await decrypt(keyring, encryptedData);
  console.log('Decrypted data:', plaintext.toString());
}

decryptData();

Generate Data Key

This feature allows you to generate a data key using an AWS KMS key. The code sample demonstrates how to create a KMS keyring and use it to generate a data key, returning both the plaintext and encrypted versions of the key.

const { KmsKeyringNode } = require('@aws-crypto/kms-keyring');
const { generateDataKey } = require('@aws-crypto/client-node');

const keyring = new KmsKeyringNode({ generatorKeyId: 'arn:aws:kms:us-west-2:123456789012:key/abcd-1234-efgh-5678' });

async function generateKey() {
  const { plaintext, ciphertext } = await generateDataKey(keyring, { length: 32 });
  console.log('Generated data key:', plaintext);
  console.log('Encrypted data key:', ciphertext);
}

generateKey();

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Package last updated on 13 Jul 2021

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