The request signature we calculated does not match the signature you provided. Check your key and signing method

[Vaibhavsigh]

I get this error only when i use lambda function. Their is no issue in local environment .

const { S3Client, DeleteObjectCommand, PutObjectCommand } = require("@aws-sdk/client-s3");
const dotenv = require('dotenv');

dotenv.config();

const bucketName = process.env.AWS_BUCKET_BLOG;
const region = process.env.AWS_BUCKET_REGION;
const accessKeyId = process.env.AWS_ACCESS_KEY;
const secretAccessKey = process.env.AWS_SECRET_ACCESS_KEY;
const domain = process.env.AWS_CD_URL_BLOG;

const s3Client = new S3Client({
    region,
    credentials: {
        accessKeyId,
        secretAccessKey
    },
    signatureVersion: 'v4',
});

function uploadPost(fileBuffer, fileName , mimetype) {
    const uploadParams = {
        Bucket: bucketName,
        Body: fileBuffer,
        Key: fileName,
        ContentType: mimetype,
    };


    return s3Client.send(new PutObjectCommand(uploadParams));
}

function deletePost(fileName) {
    const deleteParams = {
        Bucket: bucketName,
        Key: fileName,
    };


    return s3Client.send(new DeleteObjectCommand(deleteParams));
}

async function getObjectSignedUrlPost(key) {
    const url = domain + key;


    return url;
}

module.exports = {
    uploadPost,
    deletePost,
    getObjectSignedUrlPost,
};

[Vaibhavsigh]

https://repost.aws/questions/QUL9e2HmUGQrmV1aQYHx2m2A/the-request-signature-we-calculated-does-not-match-the-signature-you-provided-check-your-key-and-signing-method-i-get-this-error-only-when-i-use-lambda-function-their-is-no-issue-in-local-server
Might help someone else

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Hello! Reopening this discussion to make it searchable.