How to encrypt and decrypt .cpt file

What is .cpt extension?

.cpt is a encrypted file format, you can use ccrypt to create and decrypt .cpt file

 

How to encrypt and decrypt .cpt file

Encrypt a file

Decrypt a file.

 

How to install ccrypt

Install ccrypt on CentOS

Install ccrypt on Debian/Ubuntu

 

Convert .cer to .crt certificates for Apache/mod_ssl using OpenSSL

Assume you have a CER is an DER encoded X.509 certificate in binary form, and you want to have a PEM-encoded X.509 Certificate file for Apache.

The following command may help:

 

Apache/mod_ssl request PEM-encoded X.509 Certificate file

Reference: http://www.modssl.org/docs/2.8/ssl_reference.html#ToC10