What is LAN Manager Hash (LANMAN Hash)?

What does LANMAN Hash stand for?

The LAN supervisor hash (LANMAN hash) is an Encryption mechanism implemented through Microsoft prior to its release of NTLM. The LANMAN hash became marketed as a one-way hash that could allow give up users to enter their Credentials at a pc, which could, in turn, encrypt said credentials thru the LANMAN hash.

What Does LAN Manager Hash Mean?

It seems that the LANMAN hash isn't always a true one-way hash. First, no matter how the cease user entered his Password, the LANMAN hash would convert the Characters into uppercase. Then, if the password cHanged into less than 14 characters, the password become Null padded to fourteen bytes. (This certainly approach that the hash might Upload characters to an quit user’s password inside the Event that the chosen password changed into too quick). The hash then break up the 14 characters into halves, and every 7-byte half of changed into utilized by the Data Encryption Standard (DES) as two separate keys. This efficaciously created 7-byte hashes that were appreciably weaker than say, a 14-byte hash, and Hackers quick located that the LANMAN hash was very susceptible to brute force assaults.

Microsoft has given that replaced the LANMAN hash with NTLM, after which the Kerberos Protocol. However, LANMAN remains to be had in more Moderen structures to be able to permit for backward compatibility with legacy structures.