Overview#

Digest SSP is a Security Support Provider as used in the Microsoft Active Directory Security Support Provider Interface

Digest SSP (Wdigest.dll) is the preferred authentication protocol for certain applications, such as LDAP and HTTPS.

Digest SSP is used for the following:

• Internet Explorer (IE) and Internet Information Services (IIS) access.
• LDAP queries.

Digest SSP uses DIGEST-MD5 as used in Windows Server 2003+ for Lightweight Directory Access Protocol (LDAP) and Web authentication.

The DIGEST-MD5 is shown as a SASL Mechanism within the SupportedSASLMechanisms attribute of Microsoft Active Directory.

More Information#

There might be more information for this subject on one of the following:

• Kerberos
• Security Support Provider
• Security Support Provider Interface