Root certificate:
The authenticity of the Carl Zeiss AG root certificates can be verified by means of the following fingerprints:
The certificates can be downloaded from the download field. You may be required to indicate your trust in these certificates in your email program.
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Certificates of Carl Zeiss AG employees
Carl Zeiss AG issues certificates to owners of email addresses, in particular to the employees of the Carl Zeiss Group.
If you require such a certificate, e.g. to send an encrypted email to Carl Zeiss AG employees, simply request a signed email or the public PGP key from its owner.
These are advanced signatures within the terminology of EU Directive 1999/93/EC and the German Signature Law of 2001-05-16.
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Status Information
Certificates can and must be revoked to prevent any misuse. Status information (revoked/not revoked) regarding Carl Zeiss AG certificates is published on a regular basis in the certificate revocation list (CRL). In the event that a certificate is revoked, a new CRL is immediately compiled and published.
 www.zeiss.com/cert/CRL of root CA (830 kB)
www.zeiss.com/cert/CRL of email CA (678 kB)
Many email programs are able to automatically download these lists at regular intervals. You may need to specify the above addresses (URLs) for this purpose.
If your email client does not assist the automatically update, you can download the CRL’s and import it manually.
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