# HTTP Request with Oauth Authorisation (HMAC)

**URL:** <https://discourse.processing.org/t/http-request-with-oauth-authorisation-hmac/190>\
**Category:** Processing\
**Created:** [May 21, 2018, 10:29am UTC](https://discourse.processing.org/t/http-request-with-oauth-authorisation-hmac/190 "2018-05-21T10:29:12Z")\
**Posts on this page:** 1\
**Page:** 1

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**Author:** ![rallyestyle](https://avatars.discourse-cdn.com/v4/letter/r/3ab097/32.png) [@rallyestyle](https://discourse.processing.org/u/rallyestyle)\
**Post date:** [May 21, 2018, 10:29am UTC](https://discourse.processing.org/t/http-request-with-oauth-authorisation-hmac/190/1 "2018-05-21T10:29:12Z")

</div>

First question on the new forum for me, literally cant find an answer anywhere so here goes…

I have have a sketch that uploads a file to my Wordpress site using an HTTP Post Request, the process uses basic access authentication (Basic Auth). Now i know this is not the most secure way of completing this so i would like to use OAuth 1 authorisation instead. I have everything setup in WordPress on the server side and have most of the required parameters, the only one that is proving a problem is the request HMAC-SHA1 signature. From what i have read i should be able to import a combo of Java libraries and make use of something similar to this code on github [(first and last examples)](https://gist.github.com/ishikawa/88599).

```auto
import java.security.SignatureException;
import java.util.Base64;

import javax.crypto.Mac;
import javax.crypto.spec.SecretKeySpec;

public class HMAC_SHA1 {
	public static String Signature(String xData, String AppKey) throws java.security.SignatureException {
		try {
			final Base64.Encoder encoder = Base64.getEncoder();
			// get an hmac_sha1 key from the raw key bytes
			SecretKeySpec signingKey = new SecretKeySpec(AppKey.getBytes("UTF-8"),"HmacSHA1");

			// get an hmac_sha1 Mac instance and initialize with the signing key
			Mac mac = Mac.getInstance("HmacSHA1");
			mac.init(signingKey);

			// compute the hmac on input data bytes
			byte[] rawHmac = mac.doFinal(xData.getBytes("UTF-8"));
			String result = encoder.encodeToString(rawHmac);
			return result;

		} catch (Exception e) {
			throw new SignatureException("Failed to generate HMAC : "+ e.getMessage());
		}
	}
}

```

Only issue here is i cant figure out how to do that sadly. I have imported the required .jar files into my sketch and have copied over the code from github but after staring at it for ages i just cant figure out how i would use the HMAC\_SHA1 class in my sketch with the variables/parameters i have already. I think i already have the xData and AppKey information if that makes any sense.

Any help would be really appreciated although i realise it’s a big ask, not your normal sort of processing thing.

Cheers