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.
Encrypt the contents from STDIN to a file
> echo "hello world" | crypt -e --key test -i encrypted-textDecrypt the contents from STDIN to STDOUT
> cat encrypted-text | crypt -d --key test -i -o
hello worldEncrypt 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 errorsDecrypt 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/
VERSIONNAME:
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- Keep it simple stupid