User Guide

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IRONPORT ASYNCOS 6.3 FOR WEB USER GUIDE
Use the following OpenSSL command to convert a DER formatted certificate file to a PEM
formatted certificate file:
openssl x509 -inform DER -in cert_in_DER -outform PEM -out
out_file_name
You can also convert key files in DER format into the PEM format by running a similar
OpenSSL command.
For RSA keys, use the following command:
openssl rsa -inform DER -in key_in_DER -outform PEM -out out_file_name
For DSA keys, use the following command:
openssl dsa -inform DER -in key_in_DER -outform PEM -out out_file_name
For more information about using OpenSSL, see the OpenSSL documentation, or visit
http://openssl.org.