Hello, I'm using many years cryptoapi and cryptoloop with encrypting my data file through loop interface under 2.4.xx kernels Now I install kernel 2.6.4 and there dm-crypt. Can I connect existing my data file with dm-crypt or need create and encrypt all data file again ? It have size 4GB, cipher - blowfish, digest - sha512. I connect it with losetup like: losetup -e blowfish -P sha512 /dev/loopX /usr/local/big_enrypted_data_file If I can use this file without reencryption - how make this with dmsetup and dm-crypt ? I carefully read dm-crypt site, but still misunderstood how connect this loop file normal. Thanks. Best Regards, Dmitry Fedenko. - Linux-crypto: cryptography in and on the Linux system Archive: http://mail.nl.linux.org/linux-crypto/