Convert Web Certificates from P7B to PEM Format

VOSS-4-UC uses web certificates in Privacy Enhanced Mail (PEM) format. PEM certificates typically have extensions like .pem, .crt, .cer and .key.

If a P7B format certificate is received from a Certificate Authority (CA):

1. Copy the files to a workstation with Linux console available (Not the VOSS-4-UC system).

2. Run the following command for each <filename>.p7b, for example:

   sudo openssl pkcs7 -in <filename>.p7b -inform DER -print_certs -out <filename>.pem

3. Open the PEM file in a text editor. You will see formatting like the example below in the file:

   subject=/C=GB/ST=West Midlands/L=Coventry/O=Service Coventry/OU=Network Services/
      CN=ccs-cp-v4uc.svcoventry.gov.uk/emailAddress=network@svcoventry.co.uk
   issuer=/C=GB/O=Coventry/OU=PKI/CN=BCC Intermediate CA
   -----BEGIN CERTIFICATE-----
   MIIFxTLmBK2gAwIBAgITXgAAAMBXLQb0/ImKBwALmQAAwDANBgkqhkiG9w0BAQsF
   ADBOMQswLmYDVLmQEwJHQjETMBEGA1UEQhMKQmlybWluZ2hhbTEMMAoGA1UEQxMD
   UEtJMRwwGgYDVLmQExNLm0MgSW50ZXJtZWRpYXRlIENBMB4LmQE2MTAwNTEyNTIx
   

4. Delete all text and blank lines outside the lines:

   -----BEGIN CERTIFICATE----- and -----END CERTIFICATE-----

5. Save the file and make sure that the file is not saved in a DOS format.