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  • 1.  HMAC 256 Not working .

    Posted Thu March 09, 2023 01:25 PM
    Edited by mayur gharat Thu March 09, 2023 01:26 PM

    We have used below code for HMAC but getting  error as 256 bit require in datap[ower 
    as per client requirement key should be "TEIFHEW" but same is  working online js complier but on datapower not working .

    const crypto = require('crypto');

    const secret = Buffer.from('TEIFHEW');
    // Calling createHmac method

    const hash = crypto.createHmac('sha256', secret).update('mayur').digest('base64');
    // Displays output

    mayur gharat

  • 2.  RE: HMAC 256 Not working .

    This message was posted by a user wishing to remain anonymous
    Posted Fri March 17, 2023 01:28 PM
    This post was removed

  • 3.  RE: HMAC 256 Not working .

    User Group Leader
    Posted Fri March 17, 2023 03:20 PM

    Hi Mayur, 

    it seems like the issue is that there is no padding for the key - you need to provide a 32 byte key. the folks here have used stuff like 

    var encryptionKey = crypto.randomBytes(32);

    you could also potentially create a crypto key object on the device and point to a text like 0x123 for a 256 bit key then reference the name of the object in the script.

    Gabriel Marte Blanco
    Austin TX

  • 4.  RE: HMAC 256 Not working .

    Posted Sun March 19, 2023 08:39 AM

    Hi ,

     I can understand that key should be 256 bit but as per client requirement we need to use  keys as 7 digit like "TEIFHEW" , do we have an option to work this on datapower as same is working in  other js compiler .

    Regards ,


    mayur gharat