[willdye] If you're looking for a way to perform the crypt function in Tcl, then the link you want is probably [crypt in pure tcl]. [JMN] 2005-08-31 The [crypt in pure tcl] above is packaged as 'tclcrypt' in the [TclHttpd] distribution. In the non-starkit TclHttpd distribution, there is also the much faster binary version packaged as 'crypt'. These are also available separately here: http://vectorstream.com/tcl/packages/ The [trf] package also provides the crypt function, but apparently not on the Windows platform at least. While on the general subject - beware that at least one crypt implementation (crypt.exe in Cygwin on Windows) takes its 'password & salt' arguments in the reverse order to that of the Tcl implementations mentioned above. See [md5crypt] for a more 'modern' method of password encryption. <>Cryptography|Security