Section: OpenSSL (1SSL)
The CA.pl script is a perl script that supplies the relevant command line arguments to the openssl command for some common certificate operations. It is intended to simplify the process of certificate creation and management by the use of some simple options.
Create a CA hierarchy:
Complete certificate creation example: create a CA, create a request, sign the request and finally create a PKCS#12 file containing it.
CA.pl -newca CA.pl -newreq CA.pl -signreq CA.pl -pkcs12 "My Test Certificate"
Although the CA.pl creates RSA CAs and requests it is still possible to use it with DSA certificates and requests using the req?(1) command directly. The following example shows the steps that would typically be taken.
Create some DSA parameters:
openssl dsaparam -out dsap.pem 1024
Create a DSA CA certificate and private key:
openssl req -x509 -newkey dsa:dsap.pem -keyout cacert.pem -out cacert.pem
Create the CA directories and files:
enter cacert.pem when prompted for the CA file name.
Create a DSA certificate request and private key (a different set of parameters can optionally be created first):
openssl req -out newreq.pem -newkey dsa:dsap.pem
Sign the request:
Most of the filenames mentioned can be modified by editing the CA.pl script.
If the demoCA directory already exists then the -newca command will not overwrite it and will do nothing. This can happen if a previous call using the -newca option terminated abnormally. To get the correct behaviour delete the demoCA directory if it already exists.
Under some environments it may not be possible to run the CA.pl script directly (for example Win32) and the default configuration file location may be wrong. In this case the command:
perl -S CA.pl
can be used and the OPENSSL_CONF environment variable changed to point to the correct path of the configuration file ``openssl.cnf''.
The script is intended as a simple front end for the openssl program for use by a beginner. Its behaviour isn't always what is wanted. For more control over the behaviour of the certificate commands call the openssl command directly.
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