API secret in hex format & Help needed to investigate API logs at your end

We use an industry standard, security appliance IBM DataPower and this will be your client accessing your API services. The code that signs and base 64 encodes the string is a custom Gateway script which supports ECMAScript, based on Javascript and Jscript.

The Get request our code made returned a 401 unauthorised response from you and the headers for the GET request is here:

Header in
our code: (that returns a 401 unauthorized response)

[{"Date":"Thu,
16 Mar 2017 14:46:12 GMT"Authorization":"Signature
keyId=\"a4364e62-e58b-4b64-9c71-faead5417557\",algorithm=\"hmac-sha256\",headers=\"(request-target)
host date content-type content-length\",signature=\"4+wzapqhR2CCERy1VJXzHDDl6jdQ939FnqI2NIwQZnM=\""}] 

The technical requirement at our end is to use the API secret in hex format preceded by 0x.

Can you confirm that the API secret we have (/NoVqWHBRv23t5ae9OuQlODUX5yoAcJcFP8Z2nJldBkrsTCdqhRzGzrrTvD9EVqLgwTrXC4xKZ/Khfv6shMwAA==) is in clear text format?

If no, can you provide the secret in clear text or in hex format?

If yes, can you please investigate at your end what is causing the 401 response?

Our GW script code is attached for reference:

apim.setvariable('gateway-host','rms-world-check-one-api-pilot.thomsonreuters.com','add');
apim.setvariable('gateway-url','/v1/','add');
apim.setvariable('api-key','a4364e62-e58b-4b64-9c71-faead5417557','add');
var date = new Date().toGMTString();
apim.setvariable('datasign', '(request-target): get ' + apim.getvariable('gateway-url') + 'groups' + '\\n' + 'host: '+apim.getvariable('gateway-host')  + '\\n' +'date: ' +date, 'add');
var crypto = require('crypto');
var myKey = 'Key_ThompsonReuters';
var hmac = crypto.createHmac('hmac-sha256', myKey);
var data2sign = apim.getvariable('datasign');
var result = hmac.update(data2sign).digest('base64');
apim.setvariable('authorisation','Signature keyId="' + apim.getvariable('api-key') + '",algorithm="hmac-sha256",headers="(request-target) host date content-type content-length",signature="' + result + '"', 'add');
apim.setvariable('message.headers.Date', date, 'add');
apim.setvariable('message.headers.Authorization', apim.getvariable('authorisation'), 'add');