Category Archives: Tutorial

Quickstart Guide to NouveauPG for OS X

To encrypt a message for some party, you must first import their certificate into NouveauPG.

You can import public key certificates from either the clipboard or a file.
You can import public key certificates from either the clipboard or a file.

Before using a certificate, be sure it’s valid. NouveauPG will warn before performing encryption with an invalid certificate.

User ID validation Click on Compose Message to write a new message for the recipient.

Compose Screenshot

You can either type a message or choose a file to encrypt. At this time, NouveauPG will only encrypt plain text files. (UTF-8 supported)

Compose Screenshot

You can export your encrypted message by copying to the clipboard, or save as a text file.

Compose Screenshot 3


If you wish to receive encrypted messages from another party, you must first create a new identity. Press the add button on the lower left hand corner of the window.

Create Identity

An identity looks a lot like the public key certificate but you have two more options: Decrypt Message and Private Keystore

My New Identity screenshot


The two new options are protected by the password you chose while creating the account.

enter_passwordTo decrypt a message, either paste the encrypted message in the space provided or load an encrypted message from a file.

Decrypt ScreenshotYou should use the Private Keystore feature to backup your identity. Make sure your keystore is saved on an encrypted volume. To restore an identity, or move it to a new computer, simply import the private key block.

Export Identity Keystore


Getting Started with NouveauPG for iPhone

NouveauPG allows you to securely message others using iPhone apps you already have. You use the clipboard to efficiently shuffle encrypted messages into and out of your favorite messaging and e-mail apps.

Before you can receive (and decrypt) any encrypted messages, you must first generate an identity. An identity is sometimes referred to as a key pair or public/private key pair. Your identity has a public part that can and should be distributed to anyone that might want to send you an encrypted message. The private part of your identity is used to decrypt messages that were encrypted using the public part of the identity.

Generate user The private portion of the identity is further protected by a password. Even if you have the password for an identity, you can’t decrypt a message without the private key. The password is just another line of defense against unauthorized access to the private key.

It will take a few moments to generate a new identity, depending on how recent your iPhone is.

Identity menu

Clicking on your newly created identity will bring up a short menu. You can export a public key certificate for this identity, which others will use to encrypt messages for the identity.

Export OpenPGP public key certificate

From this screen you can either e-mail this public key certificate someone that may want to send you an encrypted message or copy and paste into another app.

Compose a message to self

You can also add this public key certificate to your Recipients list and be able to encrypt messages to yourself.  This may help you understand the OpenPGP process better by examining from end to end.

Export encrypted OpenPGP message

As usual, you can easily send the encrypted message to the e-mail address specified in the public key certificate. But since you’re sending the message to yourself, simply save it to your Messages. (The Save button on the toolbar)


The messages is where encrypted messages are stored waiting to be decrypted. The add icon on the upper left will add an empty message. You can paste an encrypted OpenPGP message into this empty message and NouveauPG will automatically recognize if it is encrypted for the public key of an Identity.

If NouveauPG recognizes the Identity the message was encrypted for, it’s identicon will appear on the left side of the cell. Otherwise, a preview of the message’s content will show instead.

Decrypt message

Once you select an encrypted message, you have the option of attempting to decrypt the message.

Identity locked

First you must unlock the private part of identity with the password you selected.Identity menu

This is known as “unlocking the keystore.” The key store is always protected by a password as a line of defense against unauthorized access to the key.

Unlocked menu

Once you unlock an identity, the menu has a couple more options. Exporting the private keystore will allow you to use import this identity into NouveauPG on another device or NouveauPG for Mac OS. If you intend on using a key for a period of time, you would be well advised to export and backup a private keystore for the identity. You will be prompted for a password to protect the keystore with.Decrypted message

Now that you have unlocked the identity, you are able to freely decrypt the OpenPGP messages encrypted for that identity.

How to encrypt a message using NouveauPG for iPhone

The way to import OpenPGP messages into NouveauPG is using the clipboard. This allows you to use NouveauPG in conjunction with other applications for encrypted communications beyond e-mail.

Copy an OpenPGP Public Key certificate you your iPhone clipboard, navigate to the Recipients tab and press the Add Contact icon indicated below.

Version: NouveauPG 1.10 (OS X)


Import public key certificate

If the public key certificate is valid, a new listing will appear at the bottom of your Recipients list.

Two recipients

The colorful icon on the left side of each cell is an identicon generated to help you identify keys. Each key has a unique identicon which is impossible to forge because it is generated from the key itself.

Compose message

Selecting a recipient will allow you to compose a new message for them. You can either type a message or paste a message from another app.

Export OpenPGP data

Pressing encrypt will encrypt your secret message and clear it from memory. From this point on, if you want to read the message, you will need the private key. You can safely put this message in any public place where the receiver may find it.

E-mail export

Pressing e-mail will generate a new e-mail containing your message, addressed to the e-mail address in the public key certificate (if applicable).

E-mail is an effective way, but obviously not the only way to exchange OpenPGP messages.