Bulk Operations in HMAC

The bulk operation in HMAC is supported only with HmacSHA256. To perform the bulk operation follow the steps below:

1. Create an instance of HmacSHA256

   
       HmacSHA256 hmc = new HmacSHA256( hkey );
       

2. Call doFinalBulk method and pass the array of data to be encrypted.

   
   byte[][] macValue = hmc.doFinalBulk( dataToEncrypt);