Crypt Password Storage Scheme
The Crypt Password Storage Scheme provides a mechanism for encoding user passwords like Unix crypt does. Like on most Unix systems, the password may be encrypted using different algorithms, either Unix crypt, md5, sha256 or sha512.
This scheme contains only an implementation for the user password syntax, with a storage scheme name of "CRYPT". Like on most Unixes, the "CRYPT" storage scheme has different algorithms, the default being Unix crypt. Warning: even though Unix crypt is a one-way digest, it is very weak by today’s standards. Only the first 8 characters in a password are used, and it only uses the bottom 7 bits of each character. It only supports a 12-bit salt (meaning that there are only 4096 possible ways to encode a given password), so it is vulnerable to dictionary attacks. You should therefore use this algorithm only in cases where an external application expects to retrieve the password and verify it outside of the directory, instead of by performing an LDAP bind.
Parent
The Crypt Password Storage Scheme object inherits from Password Storage Scheme.
Crypt Password Storage Scheme Properties
You can use configuration expressions to set property values at startup time. For details, see Property Value Substitution.
| Basic Properties | Advanced Properties |
|---|---|
crypt-password-storage-encryption-algorithm
Synopsis |
Specifies the algorithm to use to encrypt new passwords. |
Description |
Select the crypt algorithm to use to encrypt new passwords. The value can either be "unix", which means the password is encrypted with the weak Unix crypt algorithm, or "md5" which means the password is encrypted with the BSD MD5 algorithm and has a $1$ prefix, or "sha256" which means the password is encrypted with the SHA256 algorithm and has a $5$ prefix, or "sha512" which means the password is encrypted with the SHA512 algorithm and has a $6$ prefix. |
Default Value |
unix |
Allowed Values |
|
Multi-valued |
No |
Required |
Yes |
Admin Action Required |
None |
Advanced |
No |
Read-Only |
No |
Advanced Properties
Use the --advanced
option to access advanced properties.
java-class
Synopsis |
Specifies the fully-qualified name of the Java class that provides the Crypt Password Storage Scheme implementation. |
Default Value |
org.opends.server.extensions.CryptPasswordStorageScheme |
Allowed Values |
A Java class that extends or implements:
|
Multi-valued |
No |
Required |
Yes |
Admin Action Required |
None |
Advanced |
Yes |
Read-Only |
No |