lyra

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A lightweight encryption tool designed for ease of use.

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---
Lyra is a lightweight and fast encryption tool that makes protecting your sensitive files easy.

# Features
* Simple command line encryption and decryption. 
  * Encrypting is as easy as entering: `lyra encrypt file` and to decrypting is just as simple: `lyra decrypt file`
* No need to worry about complex cipher options and configurations.
  * Lyra uses a single strong time tested cipher to protect your data. Your data is encrypted with AES-256-GCM which simultaneously provides data confidentiality, authenticity and integrity (see [authenticated encryption](https://en.wikipedia.org/wiki/Authenticated_encryption)).
  * Values that need to be unique and random (ex: salt) are generated via a cryptographically secure pseudo random number generator.
* Strong GPU and ASIC resistant KDF being used to protect your passphrase.
  * Lyra uses argon2 to make dictionary attacks and brute force guessing even harder.
* Generate strong memorable passphrases via the diceware method.

# Requirements (if building from source)
* Go 1.9 and above
* [Go Dep](https://golang.github.io/dep/) for dependency management.

# Dependencies
* [gware](https://github.com/brsmsn/gware) for diceware passphrase generation.
* [golang.org/x/crypto](https://github.com/golang/crypto) for argon2 and passphrase terminal.
* [memguard](https://github.com/awnumar/memguard) for handling keys and plaintext secrurely in memory.

# Installation
#### Binaries
* Signed [binaries](#releases) available for windows, linux and macOs available [here](https://github.com/azohra/lyra/releases).
* Simply `mv` the binary to your `$PATH`
#### Installation from source
* You can alternatively install lyra using:
  * `go get -d github.com/azohra/lyra`
  * `cd $(go env GOPATH)/src/github.com/azohra/lyra && make install`
#### Installation from Brew
* Lyra can also be installed via brew:
  * `brew install azohra/tools/lyra`

# Usage
```
Lyra is a lightweight tool used to protect sensitive data

Usage: lyra [Command]

Commands:

encrypt		Encipher a specified file with inputed passphrase
	decrypt		Decipher a specified file with inputed passphrase
	generate	Generate passphrase(s)
		
To get more info on commands do: lyra [Command] --help
```

# Releases
Binaries and tags are all signed. The signing key used can be found by searching keyid `5604E4DC6DC74D9B`.

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