[SR-Users] Meddling with password during authentication

Hello all, During authentication, is there any way to affect the password user is sending? I do suspect not as it is a clear security matter, but won't hurt to ask. I use auth_db module with calculate_ha1 parameter set to 1. For reasons in integrating Kamailio into my system architecture there is a need to store a password in some other format than for example md5('555:domain.com:password)') while not allowing any passwords to be stored as plaintext. For example: md5('555:domain.com:md5('password')') but this would require me to hash the password before authentication, in Kamailio script as I can't do it in the clients. Reason for this question is to have my users in a separate database, and these users could have 0-n sip peers assigned to them, and have users authenticate to my software and the sip peers using the same password. cheers, Olli