Manually Pre-Sign Amazon Put Request

Manually Pre-Sign Amazon Put Request

var hmacSha1Base64 = function (message) {
        return require("crypto").createHmac('sha1', process.env.AMAZON_SECRET_ACCESS_KEY)
            .update(message)
            .digest('base64')
    }
    
var expires = Math.floor(Date.now() / 1000) + 60 * 60 * 24 * 365

var put_request = "PUT\n" + md5Base64 + "\n"+contentType+"\n"+expires+"\n/"+ "xxxxxxx/" + bucketObjectKey

var signature = hmacSha1Base64((process.env.AMAZON_SECRET_ACCESS_KEY, )put_request);

return 'https://xxxxxxx.s3.amazonaws.com/'+ bucketObjectKey +
        '?AWSAccessKeyId=' + encodeURIComponent(process.env.AWS_ACCESS_KEY_ID) +
        '&Content-MD5=' + md5Base64 +
        "&Content-Type=" + encodeURIComponent(contentType) +
        "&Expires=" + encodeURIComponent(expires) +
        "&Signature=" + encodeURIComponent(signature)