What Hashing Algorithm OID uses to store user Password : SSHA or MD5

User’s password is stored in attribute userPassword and for security reasons value in password userPassword is hashed using SSHA (Salted Secure Hashing Algorithm) Algorithm . More on SHA here and Salt here

Here are key points related to password in OID

1. User’s Password in OID are stored in attribute userPassword

2. User’s password can be stored either in
a) One-way hashed value (This is more secure)
b) Encrypted value

3. Default userPassword hashing algorithm has changed from MD5 (in 10g OID) to SHA (in 11g OID)

4. Hashed algoritm used by OID is stored in attribute orclCryptoScheme in Root entry (Note: By default this attribute is not visible but when you update attribute value using ldapmodify then you can view attribute orclCyyptScheme)




5. To check hashing algorithm used for userPassword attribute, create dump of OID users using

ldifwrite connect=”OIDDB”  basedn=”cn=atul,cn=Users,dc=onlineAppsDBA,dc=com” ldiffile=”atul.ldif”

Check {Algorithm} SSHA for attribute userPassword


dn: cn=atul,cn=Users,dc=onlineAppsDBA,dc=com

authpassword;oid: {SASL/MD5}Af40OwzEC+cpEGGhxgEKiA==
authpassword;oid: {SASL/MD5-DN}J7Y7iZLzL9olRbPBQPkPdQ==
orclpassword: {x- orcldbpwd}1.0:DBC33603EF1B2081
orclsamaccountname: atul
pwdchangedtime: 20140219161252z

sn: atul
uid: atul
userpassword: {SSHA}sTrbgp/d46Ay8ipXHSor7f9YYl+CmaLSv2jr6A==


6. To change hashing algorithm used for userPassword attribute use ldapmodify as mentioned here



Share This Post with Your Friends over Social Media!

About the Author Atul Kumar

Oracle ACE, Author, Speaker and Founder of K21 Technologies & K21 Academy : Specialising in Design, Implement, and Trainings.

follow me on:

Leave a Comment:

venkat says March 8, 2018

what is default salt lenght for SSHA and how do we cofigure that length to 128 bit

Add Your Reply