crypt

crypt

crypt is a small app to encrypt and decrypt files with aes encryption. It is portable and works on OSX, Linux, and Windows along with any other OS that supports go.

A key can be specified with the --key flag or via stdin if --key is not specified. You may want to provide your key via stdin for encryption and decryption so that it is not saved in your bash history.

Examples

Encrypt the contents from STDIN to a file

> echo "hello world" | crypt -e --key test -i encrypted-text

Decrypt the contents from STDIN to STDOUT

> cat encrypted-text | crypt -d --key test -i -o
hello world

Encrypt a large tar file to a new file

> crypt -e docker-image.tar encrypted-image.xxx
please enter your key:
> secret
1.24 GB / 1.25 GB [=========================================================================] 99.70 % 58.72 MB/s
# test to see if I can read the file
> tar -tvf encrypted-image.xxx
tar: This does not look like a tar archive
tar: Skipping to next header
tar: Exiting with failure status due to previous errors

Decrypt a large file back to the original contents

> crypt -d encrypted-image.xxx docker-image-unencrypted.tar
please enter your key:
> secret
1.24 GB / 1.25 GB [=========================================================================] 99.45 % 70.80 MB/s
# look at the tar headers
> tar -tvf docker-image-unencrypted.tar
drwxr-xr-x 0/0               0 2014-11-22 21:14 05c6d847812ccad7f327f12ec2404dd972fc64e65c6c8a996b402c8e3f990d7c/
-rw-r--r-- 0/0               3 2014-11-22 21:14 05c6d847812ccad7f327f12ec2404dd972fc64e65c6c8a996b402c8e3f990d7c/
VERSION

NAME:
   crypt - encrypt and decrypt files easily

USAGE:
   crypt [global options] command [command options] [arguments...]

VERSION:
   1

AUTHOR:
  @crosbymichael

COMMANDS:
   help, h      Shows a list of commands or help for one command

GLOBAL OPTIONS:
   --key                key to use for the encryption algo
   --encrypt, -e        encrypt a file
   --decrypt, -d        decrypt a file
   --stdin, -i          accept input for STDIN
   --stdout, -o         return output to STDOUT
   --help, -h           show help
   --version, -v        print the version

TODO:

• Keep it simple stupid

License - MIT