Chris,

> -----Original Message-----
> From: Christopher Schultz <ch...@christopherschultz.net>
> Sent: Tuesday, August 24, 2021 5:52 PM
> To: users@tomcat.apache.org
> Subject: Re: UserDatabaseRealm and DIGEST
> 
> Jon,
> 
> On 8/24/21 12:53, jonmcalexan...@wellsfargo.com.INVALID wrote:
> >> -----Original Message-----
> >> From: Mark Thomas <ma...@apache.org>
> >> Sent: Tuesday, August 24, 2021 11:41 AM
> >> To: users@tomcat.apache.org
> >> Subject: Re: UserDatabaseRealm and DIGEST
> >>
> >> On 24/08/2021 17:28, jonmcalexan...@wellsfargo.com.INVALID wrote:
> >>> Ok, so I've been reading thru the documentation on DIGEST but not
> >> entirely sure I have it right. What is the best practice for DIGEST
> >> and what algorithms are allowed, such as is sha-256 allowed?
> >>
> >> First, a question of clarification.
> >>
> >> Do you mean HTTP DIGEST authentication or do you mean storing
> >> password hashes rather than the actual passwords in the
> UserDatabaseRealm?
> >>
> >> Mark >
> > I mean the Password Hashes rather than the actual password for the
> UserDatabaseRealm.
> 
> You can use any algorithm that Java's MessageDigest supports.
> 
> I would recommend against using "Digest" credential storage and instead use
> something more secure such as PBKDF2, which Tomcat also supports.
> 
> You might find this informative:
> https://urldefense.com/v3/__https://tomcat.apache.org/presentations.htm
> l*latest-credential-
> security__;Iw!!F9svGWnIaVPGSwU!7c3eGMZdJEU_EmV4XmOqEiivhaDIfji3A
> sGbXN4DAVlFM-pSfYgsX93DDHm6520mF1wBLNc$
> 
> -chris
> 
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In this case I am wanting to know the proper way to use DIGEST as we have some 
folks with vendor applications that Use Tomcat that insist on using the 
UserDatabaseRealm. I agree that using LDAP or something other is the better way 
to go. We typically do NOT allow the use of the UserDatabaseRealm unless the 
passwords are hashed with DIGEST. I just want to make sure that when we check 
for compliance, we are approving the various means.

Thanks,



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Jon McAlexander
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