MD5_CRYPT_ENAB (boolean) Indicate if passwords must be encrypted using the MD5-based algorithm. If set to yes, new passwords will be encrypted using the MD5-based algorithm compatible with the one used by recent releases of FreeBSD. It supports passwords of unlimited length and longer salt strings. Set to no if you need to copy encrypted passwords to other systems which don't understand the new algorithm. Default is no. This variable is superceded by the ENCRYPT_METHOD variable or by any command line option used to configure the encryption algorithm. This variable is deprecated. You should use ENCRYPT_METHOD. Note: if you use PAM, it is recommended to set this variable consistently with the PAM modules configuration.