I am encrypting a file on Ubuntu machine with openSSL using following command:
openssl enc -aes-256-cbc -in mydbBackup.tar -out mydbBackup.enc.tar -pass pass:scecret
I transfer it to ftp server. Now when I copy the file from ftp to another machine and try to decrypt it with following command:
openssl enc -aes-256-cbc -d -in mydbBackup.tar -out mydbBackup.enc.tar -pass pass:scecret
I get following error:
bad decrypt 139727625037472:error:06065064:digital envelope routines:EVP_DecryptFinal_ex: bad decrypt:evp_enc.c:467:
Is it some problem due to file transfer or is it not possible to decrypt the files encrypted on another system?
I have executed
ls -l command after running decrypt command with (
-out decrypt.tar.gz) and without (
-out decrypt.tar.gz) salt argument and I get following output:
-rw-r--r-- 1 backup backup 43119360 2012-01-29 07:10 encrypt-20120128.enc.tar.gz -rw-r--r-- 1 backup backup 43119328 2012-01-29 07:12 decrypt1.tar.gz -rw-r--r-- 1 backup backup 43119328 2012-01-29 07:12 decrypt.tar.gz
so it is churning out something but it is throwing up error and
tar complains that resulting file is not
UPDATE:- I have calculated MD5 checksum (as suggested by @Oliver Salzburg) of original file and one transferred from ftp and surprisingly it gives same value for both the files.