cifra

cifra: A simple symmetric encryption tool

cifra is an easy-to-use symmetric encryption command-line tool, using the robust AES-256 encryption standard.

Available modes:

• Galois/Counter Mode (GCM)
• Cipher Feedback Mode (CFB).

Quick Start

$ go build
$ ./cifra -help

Examples

Encrypt a file called data.txt using AES-256 GCM:

$ ./cifra data.txt
Password:
$ ls
data.txt  data.txt.cif

Encrypt data.txt using AES-256 CFB. Output file should be named data.txt.cfb:

$ ./cifra -cfb -o data.txt.cfb data.txt
Password:
$ ls
data.txt  data.txt.cif  data.txt.cfb

Decrypt both files:

$ ./cifra -dec -o data.dec1 data.txt.cif
Password:
$ ./cifra -dec -cfb -o data.dec2 data.txt.cfb
Password:
$ ls
data.txt  data.txt.cif  data.txt.cfb  data.dec1  data.dec2