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Understanding technical terms used in SSL is essential. Here you can learn more about:

• The additional licence purchase
• The certificate free reissue
  

Additional licence purchase

Depending on your needs or your technical pool, you may need to buy additionnal certificates or licences.

NOTA: Certigna's certificates can be installed on an unlimited number of machines.

• Physical machine: Electricaly connected machine
• Virtual machine: In process machine

Several configuration can be encountered:

• Active / Active
• Active / Inactive
• Back-up site
• Several virtual machines on one physical machine

A digital certificate reissue:

A new certificate can be reissued in substitution of an existing one with the same fields but a different pair of keys*.

Warning : Certigna certificates can only be reissued during the 3 months following the issuance.

That can be done in those situations:

• A certificate loss after a hard disk failure
• A software switching
• The modification of the key sizes
• The vulnerability of the privet key
• The upgrating of the signature from MD5 to SHA1

*pair of keys: Item privet key / public key elements: if a new pair of keys is needed a new CSR has to be requested.

The SSL certificate is trusted if it is signed by a "trusted" or pre-installed root certificate.