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Encrypt anything with a password

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# Secret - Encrypt anything with a password

Ever wanted to hide a file? Now you can do it really easily!

[![asciicast](https://asciinema.org/a/401528.svg)](https://asciinema.org/a/401528?speed=2&autoplay=1)

## Usage

```text
secret {-e/--encrypt | -d/--decrypt} <source> [<destination>]
secret [-h/--help | -v/--version]
```

For example, run:
```shell
echo "foobardata" > foo.txt
secret --encrypt foo.txt
```
You will be prompted for a password that you can use to recover data later.
```text
Password:
```

After you input your password, Secret will make an encrypted `foo.txt.secret` file.

Then, when you want to decrypt `foo.txt.secret`, you can run:
```shell
secret --decrypt foo.txt.secret bar.txt
```
You must enter the same password you had when you encrypted the data.

Secret then decrypts `foo.txt.secret` and writes the data to a new file, `bar.txt`.

If you didn't specify `bar.txt`, Secret would try to write to `foo.txt`. However, Secret will never overwrite files and so it would print an error.

Now `bar.txt` and `foo.txt` are exactly the same! (you can check this with `diff`)

For larger files, Secret shows progress bars that indicate how much data has been encrypted or decrypted and even provides estimates for how much time is remaining.
```text
Decrypting  33% ████████████                    (687 MB/2.0 GB, 304.783 MB/s) [2s:4s]
```

You can also use pipes to specify the password (this can be useful in scripts):

```shell
echo "mypass" | secret -e foo   # use "mypass" as password and encrypt foo
```

### Details
```text
Options:
   -e, --encrypt   Encrypt the source file and save to destination. If no
                   destination is specified, secret makes a new file with a
                   .secret extension. This option reads for a password.
   -d, --decrypt   Decrypt the source file and save to destination. If no
                   destination is specified, secret makes a new file without
                   the .secret extension. This option reads for a password.
   -h, --help      Display this help message
   -v, --version   Show secret's version
```

## Installing

```shell
brew install quackduck/tap/secret # works for Linuxbrew too!
```
or get an executable from [releases](https://github.com/quackduck/secret/releases).

## Uninstalling
```shell
brew uninstall quackduck/tap/secret
```
or on Unix,
```shell
rm $(which secret)
```
or just delete it from wherever you installed the binary.

## Implementation details

Secret uses AES, GCM, Scrypt with N = 2^15, r = 8, p = 1 and a high quality, 32 byte random salt for deriving a key.

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