Authentication password transmitting method and authentication password acquiring method for mobile terminal

The invention discloses an authentication password transmitting method and an authentication password acquiring method for a mobile terminal, an authentication servicer side and a system. The authentication password transmitting method comprises the following steps: mapping an original authentication password into at least one of pictures or pixel values of some pixel sets in the picture sequence according to a set rule, the display order of the pictures in the picture sequence and the display intervals between the pictures in the picture sequence, wherein when the original authentication password is mapped into the display order of the pictures, and the pictures have different pixel characteristics; displaying the pictures or the picture sequence on a display screen of a mobile terminal. The authentication password transmitting method and the authentication password acquiring method for the mobile terminal can improve safety of authentication and are applied to intelligent mobile devices currently used in ci