FreeOTFE [freeotfe.org] runs in Windows and is compatible with Linux losetup/dm-crypt volumes. The only Win/Mac cross encryption program I've found is ccrypt [mathstat.dal.ca] which is unfortunately just a simple file encryption program. >From this slashdot thread http://ask.slashdot.org/article.pl?sid=05/08/24/2226218 Check out this thread http://blogostuff.blogspot.com/2006/11/jfilecrypt.html jfilecrypt is java based cross platform and uses blowfish instead of pgp for encryption. Kremlin 3.0 provides a cross-platform security suite for Mac and PC. http://www.gold-software.com/download6287.html * * * * * * * * * * * * * * * * * * * * * * www.mohanarun.com www.skoths.com * * * * * * * * * * * * * * * * * * * * * *