%0 Journal Article %B Multimedia Tools and Applications %D 2019 %N 9 %P 11735-11742, %R 10.1007/s11042-018-6725-7 %T Comments on “verifiable outsourced attribute-based signature scheme” %U https://doi.org/10.1007/s11042-018-6725-7 %V 78 %8 2019/05/01 %@ 1573-7721