RFC_READ_TABLE with other user (IS this possible?)

Hi I will explain my problem

I want use RFC connection with function RFC_READ_TABLE

The problem IS I dont want use the user where they are in the red circle (inside sm59)

I want use USER and password in my ABAP CODE or in a table with password in MD5

THIS IS POSSIBLE ?

My function look like that

CALL FUNCTION 'RFC_READ_TABLE' DESTINATION 'DCRCLNT440'
     EXPORTING
          query_table                = 'TMSBUFFER'
          delimiter                  = ' '
          no_data                    = ' '
          rowskips                   = 0
          rowcount                   = 0
        TABLES
           options                    = lv_options
           fields                     = lv_fields
           data                       = lv_data
       EXCEPTIONS
          table_not_available        = 1
          table_without_data         = 2
          option_not_valid           = 3
          field_not_valid            = 4
          not_authorized             = 5
          data_buffer_exceeded       = 6
          OTHERS