Convert x509 certificate from DER or PEM format to another format.

convcert.bat

:: Contact: ruzzzua@gmail.com
:: Version: 2015.08.14
:: Dependencies: OpenSSL

@echo off

if "%1"=="" goto :USAGE
if "%2"=="" goto :USAGE
if "%1"=="-toder" goto :TODER

:TOPEM
:: Convert from DER to PEM (Default)
openssl x509 -inform der -in %1 -out %2
goto :eof

:TODER
:: Convert from PEM to DER (Default)
if "%3"=="" goto :USAGE
openssl x509 -outform der -in %2 -out %3
goto :eof

:USAGE
echo Convert x509 certificate from DER or PEM format to another format.
echo Usage: %~nx0 [-toder] from-file to-file