Certificate Signing Request - CSR Decoding Tools

CSR Decoding Tools

The publicly available OpenSSL service can decode a CSR locally, without transmitting sensitive information over unsecure networks.

Microsoft Windows OS versions newer than XP contain certutil.exe. Older OS versions may be able to install certutil.exe as part of another package, e.g. the Windows 2003 Server Service Pack 1 version of adminpak. The basic command to view the contents of a CSR locally using this tool is certutil.exe -dump filename.csr.

Many other programs that are capable of creating a CSR are also capable of decoding it locally into a human readable format.