https://github.com/rubiojr/fcrypto

secretbox based file encryption/decryption
https://github.com/rubiojr/fcrypto

Last synced: 3 months ago
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secretbox based file encryption/decryption

• Host: GitHub
• URL: https://github.com/rubiojr/fcrypto
• Owner: rubiojr
• License: mit
• Created: 2019-06-24T13:33:19.000Z (almost 6 years ago)
• Default Branch: master
• Last Pushed: 2019-07-01T15:32:15.000Z (almost 6 years ago)
• Last Synced: 2024-04-14T17:10:25.172Z (about 1 year ago)
• Language: Go
• Size: 23.4 KB
• Stars: 1
• Watchers: 2
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md
  • License: LICENSE

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README

        
# fcrypto

[![Build Status](https://travis-ci.com/rubiojr/fcrypto.svg?branch=master)](https://travis-ci.com/rubiojr/fcrypto)

File encryption/decryption extracted from Nick Craig-Wood's [rclone source code](https://github.com/ncw/rclone).

> rclone uses nacl secretbox which in turn uses XSalsa20 and Poly1305 to encrypt and authenticate your configuration with secret-key cryptography. The password is SHA-256 hashed, which produces the key for secretbox. The hashed password is not stored.

>

> While this provides very good security, we do not recommend storing your encrypted rclone configuration in public if it contains sensitive information, maybe except if you use a very strong password.

See [file encryption in rclone docs.](https://github.com/ncw/rclone/blob/976a020a2f4814ab32686bd47870ddb45699950a/docs/content/docs.md)

```go

package main

import (

	"bytes"

	"fmt"

	"os"

	"github.com/rubiojr/fcrypto"

)

const secret = "bar"

const file = "secret.conf"

func main() {

	if _, err := os.Stat(file); os.IsNotExist(err) {

		fmt.Println("Saving a file with 'foobar'")

		fcrypto.SaveFile(bytes.NewBufferString("foobar"), file, secret)

	} else {

		fmt.Println("Loading existing " + file)

	}

	buf, err := fcrypto.LoadFile(file, secret)

	if err != nil {

		panic(err)

	}

	fmt.Println("Decrypting the file...")

	fmt.Println("File content: " + buf.String())

}

```