Content
Answer
No, encryption is not possible. There is one way to improve the password security during provisioning:
To provision the parameter "user_hash" instead of "user_pass"
user_hash = md5(user:realm:pass)
where
realm
Be sure to use realm while generating the hash: can happen that realm is different from registrar / SIP server
This method will hide the password information, however the hash value can be used to authenticate the SIP account on the server.
MD5 has been severely compromised and is considered as not really secure. The only complete protection can be achieved by an encrypted connection between phone and provisioning server. For more information, please read Securing Snom phones more effectively.
Further Information
Related articles