code: function _createMiningInputBufferFromObject( objInput )
  {
  	let objInputCpy;
  	let sInput;
  	let bufSha512;
  	let bufMd5;
  	let bufRmd160;
  	let bufSha384;
  
  	if ( 'object' !== typeof objInput )
  	{
  		return null;
  	}
  
  	//	...
  	objInputCpy	= {
  		roundIndex		: objInput.roundIndex,
  		firstTrustMEBall	: objInput.firstTrustMEBall,
  		bits			: objInput.bits,
  		publicSeed		: objInput.publicSeed,
  		superNodeAuthor		: objInput.superNodeAuthor,
  	};
  	sInput		= JSON.stringify( objInputCpy );
  	bufSha512	= _crypto.createHash( 'sha512' ).update( sInput, 'utf8' ).digest();
  	bufMd5		= _crypto.createHash( 'md5' ).update( sInput, 'utf8' ).digest();
  	bufRmd160	= _crypto.createHash( 'rmd160' ).update( sInput, 'utf8' ).digest();
  	bufSha384	= _crypto.createHash( 'sha384' ).update( sInput, 'utf8' ).digest();
  
  	return Buffer.concat( [ bufSha512, bufMd5, bufRmd160, bufSha384 ], 140 );
  }
docs: create an input buffer with length of 140 from Js plain object
  @public
  @param	{object}	objInput
  @return	{Buffer}