使用 openssl 循环解密？

Question

I'm trying to use openssl to decrypt files. I can successfully encrypt them in a loop, but when I try to change the command to make it decrypt, I get "error reading input file."

for f in /dir1/dir2/*.txt ;
  do [ -f $f ] && openssl aes-256-cbc enc -in $f -out $f.enc -k PASSWORD ;
done

!the above works for encrypting

for f in /dir1/dir2/*.txt.enc ;
  do [ -f $f ] && openssl enc -d -aes-256-cbc -k PASSWORD -in $f -out $f;
done


"error reading input file"

So I've tried making the input file $f.txt.enc, and $f.enc, and similar fiddling with the outfile. No luck.

Answer 1

I think your encoding line has problem, missing - in front of the aes part... for reference here are lines that work for me:

openssl enc -aes-256-cbc    -in $f      -out $f.enc -k PASSWORD 

openssl enc -aes-256-cbc -d -in $f.enc  -out $f.dec -k PASSWORD