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+Toplip – A Very Strong File Encryption And Decryption CLI Utility
+======
+There are numerous file encryption tools available on the market to protect
+your files. We have already reviewed some encryption tools such as
+[**Cryptomater**][1], [**Cryptkeeper**][2], [**CryptGo**][3], [**Cryptr**][4],
+[**Tomb**][5], and [**GnuPG**][6] etc. Today, we will be discussing yet
+another file encryption and decryption command line utility named **"
+Toplip"**. It is a free and open source encryption utility that uses a very
+strong encryption method called **[AES256][7]** , along with an **XTS-AES**
+design to safeguard your confidential data. Also, it uses [**Scrypt**][8], a
+password-based key derivation function, to protect your passphrases against
+brute-force attacks.
+
+### Prominent features
+
+Compared to other file encryption tools, toplip ships with the following
+unique and prominent features.
+
+  * Very strong XTS-AES256 based encryption method.
+  * Plausible deniability.
+  * Encrypt files inside images (PNG/JPG).
+  * Multiple passphrase protection.
+  * Simplified brute force recovery protection.
+  * No identifiable output markers.
+  * Open source/GPLv3.
+
+### Installing Toplip
+
+There is no installation required. Toplip is a standalone executable binary
+file. All you have to do is download the latest toplip from the [**official
+products page**][9] and make it as executable. To do so, just run:
+
+```
+chmod +x toplip
+```
+
+### Usage
+
+If you run toplip without any arguments, you will see the help section.
+
+```
+./toplip
+```
+
+[![][10]][11]
+
+Allow me to show you some examples.
+
+For the purpose of this guide, I have created two files namely **file1** and
+**file2**. Also, I have an image file which we need it to hide the files
+inside it. And finally, I have **toplip** executable binary file. I have kept
+them all in a directory called **test**.
+
+[![][12]][13]
+
+**Encrypt/decrypt a single file**
+
+Now, let us encrypt **file1**. To do so, run:
+
+```
+./toplip file1 > file1.encrypted
+```
+
+This command will prompt you to enter a passphrase. Once you have given the
+passphrase, it will encrypt the contents of **file1** and save them in a file
+called **file1.encrypted** in your current working directory.
+
+Sample output of the above command would be:
+
+```
+This is toplip v1.20 (C) 2015, 2016 2 Ton Digital. Author: Jeff Marrison A showcase piece for the HeavyThing library. Commercial support available Proudly made in Cooroy, Australia. More info: https://2ton.com.au/toplip file1 Passphrase #1: generating keys...Done 
+Encrypting...Done
+```
+
+To verify if the file is really encrypted., try to open it and you will see
+some random characters.
+
+To decrypt the encrypted file, use **-d** flag like below:
+
+```
+./toplip -d file1.encrypted
+```
+
+This command will decrypt the given file and display the contents in the
+Terminal window.
+
+To restore the file instead of writing to stdout, do:
+
+```
+./toplip -d file1.encrypted > file1.decrypted
+```
+
+Enter the correct passphrase to decrypt the file. All contents of **file1.encrypted** will be restored in a file called **file1.decrypted**.
+
+Please don't follow this naming method. I used it for the sake of easy understanding. Use any other name(s) which is very hard to predict.
+
+**Encrypt/decrypt multiple files
+**
+
+Now we will encrypt two files with two separate passphrases for each one.
+
+```
+./toplip -alt file1 file2 > file3.encrypted
+```
+
+You will be asked to enter passphrase for each file. Use different
+passphrases.
+
+Sample output of the above command will be:
+
+```
+This is toplip v1.20 (C) 2015, 2016 2 Ton Digital. Author: Jeff Marrison A showcase piece for the HeavyThing library. Commercial support available Proudly made in Cooroy, Australia. More info: https://2ton.com.au/toplip 
+**file2 Passphrase #1** : generating keys...Done 
+**file1 Passphrase #1** : generating keys...Done 
+Encrypting...Done
+```
+
+What the above command will do is encrypt the contents of two files and save
+them in a single file called **file3.encrypted**. While restoring, just give
+the respective password. For example, if you give the passphrase of the file1,
+toplip will restore file1. If you enter the passphrase of file2, toplip will
+restore file2.
+
+Each **toplip** encrypted output may contain up to four wholly independent
+files, and each created with their own separate and unique passphrase. Due to
+the way the encrypted output is put together, there is no way to easily
+determine whether or not multiple files actually exist in the first place. By
+default, even if only one file is encrypted using toplip, random data is added
+automatically. If more than one file is specified, each with their own
+passphrase, then you can selectively extract each file independently and thus
+deny the existence of the other files altogether. This effectively allows a
+user to open an encrypted bundle with controlled exposure risk, and no
+computationally inexpensive way for an adversary to conclusively identify that
+additional confidential data exists. This is called **Plausible deniability**
+, one of the notable feature of toplip.
+
+To decrypt **file1** from **file3.encrypted** , just enter:
+
+```
+./toplip -d file3.encrypted > file1.encrypted
+```
+
+You will be prompted to enter the correct passphrase of file1.
+
+To decrypt **file2** from **file3.encrypted** , enter:
+
+```
+./toplip -d file3.encrypted > file2.encrypted
+```
+
+Do not forget to enter the correct passphrase of file2.
+
+**Use multiple passphrase protection**
+
+This is another cool feature that I admire. We can provide multiple
+passphrases for a single file when encrypting it. It will protect the
+passphrases against brute force attempts.
+
+```
+./toplip -c 2 file1 > file1.encrypted
+```
+
+Here, **-c 2** represents two different passphrases. Sample output of above
+command would be:
+
+```
+This is toplip v1.20 (C) 2015, 2016 2 Ton Digital. Author: Jeff Marrison A showcase piece for the HeavyThing library. Commercial support available Proudly made in Cooroy, Australia. More info: https://2ton.com.au/toplip 
+**file1 Passphrase #1:** generating keys...Done
+**file1 Passphrase #2:** generating keys...Done 
+Encrypting...Done
+```
+
+As you see in the above example, toplip prompted me to enter two passphrases.
+Please note that you must **provide two different passphrases** , not a single
+passphrase twice.
+
+To decrypt this file, do:
+
+```
+$ ./toplip -c 2 -d file1.encrypted > file1.decrypted 
+This is toplip v1.20 (C) 2015, 2016 2 Ton Digital. Author: Jeff Marrison A showcase piece for the HeavyThing library. Commercial support available Proudly made in Cooroy, Australia. More info: https://2ton.com.au/toplip 
+**file1.encrypted Passphrase #1:** generating keys...Done
+**file1.encrypted Passphrase #2:** generating keys...Done
+Decrypting...Done
+```
+
+**Hide files inside image**
+
+The practice of concealing a file, message, image, or video within another
+file is called **steganography**. Fortunately, this feature exists in toplip
+by default.
+
+To hide a file(s) inside images, use **-m** flag as shown below.
+
+```
+$ ./toplip -m image.png file1 > image1.png
+This is toplip v1.20 (C) 2015, 2016 2 Ton Digital. Author: Jeff Marrison A showcase piece for the HeavyThing library. Commercial support available Proudly made in Cooroy, Australia. More info: https://2ton.com.au/toplip 
+file1 Passphrase #1: generating keys...Done 
+Encrypting...Done
+```
+
+This command conceals the contents of file1 inside an image named image1.png.
+To decrypt it, run:
+
+```
+$ ./toplip -d image1.png > file1.decrypted This is toplip v1.20 (C) 2015, 2016 2 Ton Digital. Author: Jeff Marrison A showcase piece for the HeavyThing library. Commercial support available Proudly made in Cooroy, Australia. More info: https://2ton.com.au/toplip 
+image1.png Passphrase #1: generating keys...Done 
+Decrypting...Done
+```
+
+**Increase password complexity**
+
+To make things even harder to break, we can increase the password complexity
+like below.
+
+```
+./toplip -c 5 -i 0x8000 -alt file1 -c 10 -i 10 file2 > file3.encrypted
+```
+
+The above command will prompt to you enter 10 passphrases for the file1, 5
+passphrases for the file2 and encrypt both of them in a single file called
+"file3.encrypted". As you may noticed, we have used one more additional flag
+**-i** in this example. This is used to specify key derivation iterations.
+This option overrides the default iteration count of 1 for scrypt's initial
+and final PBKDF2 stages. Hexadecimal or decimal values permitted, e.g.
+**0x8000** , **10** , etc. Please note that this can dramatically increase the
+calculation times.
+
+To decrypt file1, use:
+
+```
+./toplip -c 5 -i 0x8000 -d file3.encrypted > file1.decrypted
+```
+
+To decrypt file2, use:
+
+```
+./toplip -c 10 -i 10 -d file3.encrypted > file2.decrypted
+```
+
+To know more about the underlying technical information and crypto methods
+used in toplip, refer its official website given at the end.
+
+My personal recommendation to all those who wants to protect their data. Don't
+rely on single method. Always use more than one tools/methods to encrypt
+files. Do not write passphrases/passwords in a paper and/or do not save them
+in your local or cloud storage. Just memorize them and destroy the notes. If
+you're poor at remembering passwords, consider to use any trustworthy password
+managers.
+
+And, that's all. More good stuffs to come. Stay tuned!
+
+Cheers!
+
+
+
+
+--------------------------------------------------------------------------------
+
+via: https://www.ostechnix.com/toplip-strong-file-encryption-decryption-cli-utility/
+
+作者：[SK][a]
+译者：[译者ID](https://github.com/译者ID)
+校对：[校对者ID](https://github.com/校对者ID)
+
+本文由 [LCTT](https://github.com/LCTT/TranslateProject) 原创编译，[Linux中国](https://linux.cn/) 荣誉推出
+
+[a]:https://www.ostechnix.com/author/sk/
+[1]:https://www.ostechnix.com/cryptomator-open-source-client-side-encryption-tool-cloud/
+[2]:https://www.ostechnix.com/how-to-encrypt-your-personal-foldersdirectories-in-linux-mint-ubuntu-distros/
+[3]:https://www.ostechnix.com/cryptogo-easy-way-encrypt-password-protect-files/
+[4]:https://www.ostechnix.com/cryptr-simple-cli-utility-encrypt-decrypt-files/
+[5]:https://www.ostechnix.com/tomb-file-encryption-tool-protect-secret-files-linux/
+[6]:https://www.ostechnix.com/an-easy-way-to-encrypt-and-decrypt-files-from-commandline-in-linux/
+[7]:http://en.wikipedia.org/wiki/Advanced_Encryption_Standard
+[8]:http://en.wikipedia.org/wiki/Scrypt
+[9]:https://2ton.com.au/Products/
+[10]:https://www.ostechnix.com/wp-content/uploads/2017/12/toplip-2.png%201366w,%20https://www.ostechnix.com/wp-content/uploads/2017/12/toplip-2-300x157.png%20300w,%20https://www.ostechnix.com/wp-content/uploads/2017/12/toplip-2-768x403.png%20768w,%20https://www.ostechnix.com/wp-content/uploads/2017/12/toplip-2-1024x537.png%201024w
+[11]:http://www.ostechnix.com/wp-content/uploads/2017/12/toplip-2.png
+[12]:https://www.ostechnix.com/wp-content/uploads/2017/12/toplip-1.png%20779w,%20https://www.ostechnix.com/wp-content/uploads/2017/12/toplip-1-300x101.png%20300w,%20https://www.ostechnix.com/wp-content/uploads/2017/12/toplip-1-768x257.png%20768w
+[13]:http://www.ostechnix.com/wp-content/uploads/2017/12/toplip-1.png
+