On 07/28/2016 09:32 AM, Pascal wrote: > I've a large file (some Gb) that I want to encrypt without copying it, so I > do this : > > # md5sum myfile > d2e539a1ff722e9f8f8f97605ca4ec1e - > # cryptsetup --type plain open myfile enc > Enter passphrase: > # dd bs=4M < myfile > /dev/mapper/enc > w+1 records in > w+1 records out > x bytes copied, y s, z MB/s > # md5sum < /dev/mapper/enc > d2e539a1ff722e9f8f8f97605ca4ec1e - > > and all is ok for encryption. > now, I want to decrypt my encrypted file in the same way, so I do this : > > # dd bs=4M < /dev/mapper/enc | md5sum > d2e539a1ff722e9f8f8f97605ca4ec1e - > > it starts well but the result does not go as desired : > > # dd bs=4M < /dev/mapper/enc > myfile > w+1 records in > w+1 records out > x bytes copied, y s, z MB/s > # md5sum myfile > 120f0695aa0c2c0940f8a5a4c0bbd18f - > > I tried increasing the bs (32M) but the result is the same :-( > > what is my problem ? Is that redacted console output? It would be better if you posted complete and accurate console output. What operating system (name, architecture, version, etc.) are you using? Please provide a URL to the manual page for your cryptsetup. David _______________________________________________ dm-crypt mailing list dm-crypt@xxxxxxxx http://www.saout.de/mailman/listinfo/dm-crypt
