How to edit the arrow in TIKZ?

Question

How to edit the arrow on the WME to be like the attached image (to have an inclined angle at the corner)?

 \documentclass[border=2pt]{standalone}
 \usepackage{tikz}
 \usetikzlibrary{positioning}
 \usetikzlibrary{positioning,calc,arrows.meta}
 \begin{document}


\begin{tikzpicture}[%
 block/.style={rectangle, draw, fill=blue!10, text width=5em, text centered,
rounded corners},line/.style={draw, -latex},arrow/.style={draw, -latex}]

   \node[block,text width=1.1cm, align=center,font=\bfseries](Driver) at 
 (0,0) 
 {A};
 \path [arrow, text width=8.5cm, align=left] ($(Driver)+(0,-0.8)$) -- ++ 
(0.3cm,0cm) |- node[near start, right] { 
\scalebox{0.8}{
\begin{tabular}{l}
\scalebox{0.5}{\textbullet}  Picks $x \in_{R} \mathbb{Z}_{p}$ \\  
 \scalebox{0.5}{\textbullet}  Computes $y \in g^{x}$.\\ \scalebox{0.5} 
   {\textbullet}  Computes $\mathcal{A}_i = BN^{1/(f+k)}$
  \end{tabular}}} ($(Driver)+(0,-1.7)$);


\end{tikzpicture}
\end{document}

Answer 1

You only need to add rounded corners. Your MWE also requires amssymb to be loaded.

 \documentclass[border=2pt]{standalone}
 \usepackage{amssymb}
 \usepackage{tikz}
 \usetikzlibrary{positioning}
 \usetikzlibrary{positioning,calc,arrows.meta}
 \begin{document}


\begin{tikzpicture}[%
 block/.style={rectangle, draw, fill=blue!10, text width=5em, text centered,
rounded corners},line/.style={draw, -latex},arrow/.style={draw, -latex}]

   \node[block,text width=1.1cm, align=center,font=\bfseries](Driver) at 
 (0,0) 
 {A};
 \path [arrow, text width=8.5cm, align=left,rounded corners,thick] ($(Driver)+(0,-0.8)$) -- ++ 
(0.3cm,0cm) |- node[near start, right] { 
\scalebox{0.8}{
\begin{tabular}{l}
\scalebox{0.5}{\textbullet}  Picks $x \in_{R} \mathbb{Z}_{p}$ \\  
 \scalebox{0.5}{\textbullet}  Computes $y \in g^{x}$.\\ \scalebox{0.5} 
   {\textbullet}  Computes $\mathcal{A}_i = BN^{1/(f+k)}$
  \end{tabular}}} ($(Driver)+(0,-1.7)$);


\end{tikzpicture}
\end{document}

A somewhat more minimal version thereof which also has a tighter bounding box is

\documentclass[border=2pt]{standalone}
\usepackage{amssymb}
\usepackage{tikz}
\usetikzlibrary{positioning}
\begin{document}
\begin{tikzpicture}[%
 block/.style={rectangle, draw, fill=blue!10, text width=5em, text centered,
rounded corners},line/.style={draw, -latex},arrow/.style={draw, -latex}]

 \node[block,text width=1.1cm, align=center,font=\bfseries](Driver)  {A};
 \path [arrow, rounded corners,thick] 
  ([yshift=-4mm]Driver.south) -- ++ 
  (0.3cm,0cm) |- node[near start, align=left,right,scale=0.8] {\begin{tabular}{l}
   \scalebox{0.5}{\textbullet}  Picks $x \in_{R} \mathbb{Z}_{p}$ \\  
   \scalebox{0.5}{\textbullet}  Computes $y \in g^{x}$.\\ 
   \scalebox{0.5}{\textbullet}  Computes $\mathcal{A}_i = BN^{1/(f+k)}$
  \end{tabular}} ([yshift=-14mm]Driver.south);
\end{tikzpicture}
\end{document}