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@smithy/signature-v4
Advanced tools
A standalone implementation of the AWS Signature V4 request signing algorithm
@smithy/signature-v4 is an npm package used for signing AWS requests using the AWS Signature Version 4 signing process. This is essential for securely making authenticated requests to AWS services.
Signing HTTP Requests
This feature allows you to sign HTTP requests to AWS services using the AWS Signature Version 4 signing process. The code sample demonstrates how to sign a GET request to an S3 bucket.
const { SignatureV4 } = require('@smithy/signature-v4');
const { Sha256 } = require('@aws-crypto/sha256-js');
const { HttpRequest } = require('@smithy/protocol-http');
const signer = new SignatureV4({
service: 's3',
region: 'us-east-1',
credentials: {
accessKeyId: 'AKID',
secretAccessKey: 'SECRET'
},
sha256: Sha256
});
const request = new HttpRequest({
method: 'GET',
hostname: 'examplebucket.s3.amazonaws.com',
path: '/exampleobject'
});
signer.sign(request).then(signedRequest => {
console.log(signedRequest);
});
Presigning URLs
This feature allows you to generate presigned URLs for AWS services, which can be used to grant temporary access to resources. The code sample demonstrates how to presign a URL for an S3 object with a 1-hour expiration.
const { SignatureV4 } = require('@smithy/signature-v4');
const { Sha256 } = require('@aws-crypto/sha256-js');
const { HttpRequest } = require('@smithy/protocol-http');
const { formatUrl } = require('@smithy/util-format-url');
const signer = new SignatureV4({
service: 's3',
region: 'us-east-1',
credentials: {
accessKeyId: 'AKID',
secretAccessKey: 'SECRET'
},
sha256: Sha256
});
const request = new HttpRequest({
method: 'GET',
hostname: 'examplebucket.s3.amazonaws.com',
path: '/exampleobject'
});
signer.presign(request, { expiresIn: 3600 }).then(presignedUrl => {
console.log(formatUrl(presignedUrl));
});
The aws-sdk package is the official AWS SDK for JavaScript, which includes a wide range of functionalities for interacting with AWS services, including request signing. It provides a higher-level abstraction compared to @smithy/signature-v4, making it easier to use for common tasks but less flexible for custom signing needs.
The aws4 package is a lightweight library for signing AWS requests with AWS Signature Version 4. It is similar to @smithy/signature-v4 in that it focuses specifically on request signing, but it is less integrated with the broader AWS SDK ecosystem.
This package contains an implementation of the AWS Signature Version 4 authentication scheme.
It is internal to Smithy-TypeScript generated clients, and not generally intended for standalone usage outside this context.
For custom usage, inspect the interface of the SignatureV4 class.
FAQs
A standalone implementation of the AWS Signature V4 request signing algorithm
We found that @smithy/signature-v4 demonstrated a healthy version release cadence and project activity because the last version was released less than a year ago. It has 0 open source maintainers collaborating on the project.
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