Mixing oldstylenums with strings

Question

I want to display the following string:

344F9DA1EA1859437077CCA38923C67797BDB8F6

Using \oldstylenums, but the alphabetic characters are messed up. Any ideas (using LaTeX and CM/CL fonts), without resorting to:

\oldstylenums{344}F\oldstylenums{9}DA\oldstylenums{1} ...

Minimal working example:

\documentclass[a4paper,10pt,pdftex]{article} % define the title 

\usepackage{textcomp}

\begin{document}
    \oldstylenums{344F9DA1EA1859437077CCA38923C67797BDB8F6}
\end{document}

Answer 1

I suggest to use the cfr-lm package.

\documentclass{article}

\usepackage[rm={oldstyle=false}]{cfr-lm}

\begin{document}

344F9DA1EA1859437077CCA38923C67797BDB8F6

\texto{344F9DA1EA1859437077CCA38923C67797BDB8F6}

\end{document}