invalid oauth signature error

[Ananda Krishna]

hi ,

I am getting this oauthSignature error:

Error Message:{ "error": {"code": 8, "message": "Invalid signature: oauth_signature 'iI0C/uiLLCGTOp WxNjd7ILv6cE='" }}

This is my code for hmac signature:

public static String computeHmac(String baseString, String key) throws Exception {

        Mac mac = Mac.getInstance("HmacSHA1");

        SecretKeySpec secret = new SecretKeySpec(key.getBytes(), mac.getAlgorithm());

        mac.init(secret);

        byte[] digest = mac.doFinal(baseString.getBytes("utf-8"));

        return (Base64.encode(digest));

       

    }

    public static String encodeUrl(String web_url) throws Exception {

        String encodedReqUrl = URLEncoder.encode(web_url, "UTF-8");

        return (encodedReqUrl);

    }

    public static String randomString() {

        final String ALPHA_NUM = "0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZ";

        StringBuilder sb = new StringBuilder(5);

        for (int i = 0; i < 5; i++) {

            int ndx = (int) (Math.random() * ALPHA_NUM.length());

            sb.append(ALPHA_NUM.charAt(ndx));

        }

        return (sb.toString());

    }

    public static String getSignaturedUrl(String methodType) throws Exception {

        String outhSignature = "";

        String finalUrl = "";

        String requestUrl = "http://platform.fatsecret.com/rest/server.api";

        String ecnodedUrl = Hmac_signature.encodeUrl(requestUrl);

        Long tstamp = System.currentTimeMillis() / 1000;

        int timestamp = tstamp.intValue();

        String nonce = Hmac_signature.randomString();

        String parameters = "oauth_consumer_key=xxxxxxx&oauth_signature_method=HMAC-SHA1&oauth_timestamp=" + timestamp + "&oauth_version=1.0&oauth_nonce="+ nonce;

        String encodedParm = Hmac_signature.encodeUrl(parameters);

        String baseString = "POST&" + ecnodedUrl + "&" + encodedParm;

        String key = "yyyyyy&";

        outhSignature = Hmac_signature.computeHmac(baseString, key);

        finalUrl = "http://platform.fatsecret.com/rest/server.api?"+parameters+"&oauth_signature="+outhSignature+"&format=json&method="+methodType;

        return (finalUrl);

    }

Please tell me where am i going wrong..

Regards,

AnandaKrishna S

[Peter L]

Hi

Did you solve it? I have the same problem. I work on Android platform.

Thanks Peter