code: function(Ne,je){// Shortcuts
  var Le=this._cipher,ze=Le.blockSize,De=Ne.slice(je,je+ze);// Remember this block to use with next block
  Le.decryptBlock(Ne,je),Oe.call(this,Ne,je,ze),this._prevBlock=De}
docs: Processes the data block at offset.
  
  @param {Array} words The data words to operate on.
  @param {number} offset The offset where the block starts.
  
  @example
  
  mode.processBlock(data.words, offset);