Node.js

Walmart Partner API Authentication (Generate a Signature for a Request)

See more RSA Examples

Demonstrates how to generate a signature for a Walmart Partner REST API call. Node.js

NODEJS_PRELUDE

function chilkatExample() {

    var success = false;

    // This example requires the Chilkat API to have been previously unlocked.
    // See Global Unlock Sample for sample code.

    var consumerId = "b68d2a72....";
    var baseUrl = "https://marketplace.walmartapis.com/v2/feeds";
    // This is your Base64 encoded private key
    var privateEncodedStr = "MIICeAIBADANBgkqhkiG9w0BAQEFAA......";
    var httpMethod = "GET";

    // We need a timestamp in decimal string form representing the number of milliseconds since Jan 01 1970 UTC.
    var dt = new chilkat.CkDateTime();
    // Set bLocal = true for a timestamp in the local timezone.  Set bLocal = false for a UTC timestamp.
    var bLocal = false;
    // This gets the timestamp in seconds, not milliseconds.
    var timeStampVal = dt.GetAsUnixTime(bLocal);

    // Build the string to sign.
    var sbStringToSign = new chilkat.StringBuilder();
    sbStringToSign.Append(consumerId);
    sbStringToSign.Append("\n");
    sbStringToSign.Append(baseUrl);
    sbStringToSign.Append("\n");
    sbStringToSign.Append(httpMethod);
    sbStringToSign.Append("\n");
    sbStringToSign.AppendInt(timeStampVal);
    // We add three zero's so that the timestamp value is in milliseconds.
    // We don't care about accuracy down to less than a second.
    // All the server cares about is that the request was signed at the current date/time
    // within some reasonable margin of error (to account for systems having clocks
    // that may be slightly different).
    sbStringToSign.Append("000\n");

    var privKey = new chilkat.PrivateKey();
    // Load the private key into a private key object.
    // Note: Technically the private key is not PEM because it lacks the header/footer strings
    // used for PEM.  However, the LoadPem method will still accept it and load it correctly.
    success = privKey.LoadPem(privateEncodedStr);
    if (success == false) {
        console.log(privKey.LastErrorText);
        return;
    }

    var rsa = new chilkat.Rsa();
    success = rsa.UsePrivateKey(privKey);
    if (success == false) {
        console.log(rsa.LastErrorText);
        return;
    }

    // We want a base64 signature string.
    rsa.EncodingMode = "base64";

    var signatureString = rsa.SignStringENC(sbStringToSign.GetAsString(),"SHA256");
    if (rsa.LastMethodSuccess == false) {
        console.log(rsa.LastErrorText);
        return;
    }

    console.log("Signature String: " + signatureString);

}

chilkatExample();