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RealPresence Collaboration Server (RMX) 1500/2000/4000 Administrator’s Guide
23-54 Polycom, Inc.
For backward compatibility with previous versions, either SHA-1 or SHA-256 can be
selected as the hash algorithm used in the creation of CSRs.
Upgrade / Downgrade Guidelines
The RMX configuration, including users and passwords, should be backed up before
upgrading or downgrading.
Table 23-16 summarizes the system behavior with regard to passwords and certificates
when upgrading to or downgrading from this version.
Table 23-16 Version Change - Password and Certificate Compatibility
Version
Change
Behavior
Passwords Certificates
Upgrade
from old
version to new
version
On login, the SHA-1 hashed
passwords of all users are
automatically hashed with SHA-256
and saved as SHA-256 hashed
passwords. The SHA-1 hashed
passwords are deleted.
Note: To ensure that system only has
SHA-256 passwords saved, the
administrator must either log in for all
users, or delete and re create all users.
The new version accepts certificates
issued with SHA-1 hashing.