Revealer

Revealer, found online at Revealer.cc, is a passphrase management system that promises to offer maximum security for your cryptocurrencies. Find out how it works today in our review.

What Is Revealer?

Revealer, found online at Revealer.cc, helps you securely manage your passphrases. Revealer consists of two core products, including:

  • A plugin for the Electrum Bitcoin Wallet
  • A physical Revealer that allows you to encrypt and decrypt your passphrase

The plugin also allows you to print your own physical revealer. Or, you can order one for 20 EUR from the Revealer.cc online store. The physical Revealer consists of two identical screens that can be manipulated to reveal your 12 word passphrase – the passphrase that protects your private key and your cryptocurrency balances.

The Electrum plugin is called Revealer, while the physical passphrase storage device is called Revealer Zero.

How Does Revealer Work?

Revealer allows you to encrypt your seeds visually while protecting them with a “deep cold”, two factor backup wallet. You can print and store the backup in any secure location. You create redundancy without risking compromise. You can also decrypt your passphrase without relying on a computer.

In more straightforward terms, you can use the Revealer Zero to store your passphrase securely. Unlike a paper wallet or a similar solution, your passphrase isn’t printed directly on the paper for the entire world to see. You’re not engraving your words into a piece of steel and then letting that steel sit in a location.

With traditional paper wallets, your 12 word passphrase isn’t encrypted: it’s just available in the open. With Revealer, your passphrase is encrypted and you can decrypt it without the use of a computer.

Revealer hides your passphrase behind a scrambled screen of “white noise”. It’s impossible to decipher that passphrase from the white noise without the use of a special device – called the Revealer. You slide the Revealer screen over the top of the device, and your passphrase clearly reveals itself underneath. Without the Revealer, the passphrase is indecipherable.

It’s a unique and creative way to manage your passphrase with maximum security. You can theoretically leave your Revealer Zero anywhere in an unsecure location – the device is useless without the Revealer. Only with the Revealer can your passphrase be revealed.

From a more technical standpoint, each Revealer has a unique code. That code starts with a version number, then adds 128 bits of entropy encoded in hex format. The last three digits are a checksum. The version number indicates the dimension of the Revealer, while the 128 bits of entropy are used as a random seed. The checksum offers some protection against a typing mistake.

Using the 128 bits of entropy as a random seed, the software will generate a noise image. In the case of Revealer Zero, that noise image will have 15423 pseudo-random bits (159×97 pixel binary image). It looks like a TV screen filled with black and white static: it’s white noise. Revealer uses this system to encrypt your seeds based on the cryptography work published by Moni Naor and Adi Shamir in 1994.

When you need to decrypt the seed and reveal your passphrase, you slide the Revealer over the display. An XOR operation occurs, and your secret passphrase will be revealed. You’ve successfully decrypted your 128-bit encrypted private key without the use of a computer.

How To Use Revealer To Protect Your Cryptocurrency

After you purchase your Revealer Zero, you’ll get a semi-transparent plastic card with unique encoded noise that you can use to encrypt your seeds. You enter the code into the Revealer software, then print the encrypted seed. You place the right Revealer on top of the encrypted seed whenever you want to see the seed – like when you want to check the passphrase.

Alternatively, you can create a Revealer in the software and print it out yourself. However, the company cautions users on the dangers of printing a revealer and the encrypted seed on the same printer because it’s not trustless towards the printer.

The Revealer software comes as a plugin for the Electrum Bitcoin Wallet. It’s merged onto the master branch, but not yet released in the binaries.

Further details on how to setup the Electrum plugin can be found on the official Revealer website here: https://revealer.cc/how-to-use/

Who’s Behind Revealer?

Revealer GmbH was founded in 2018 by Tiago Romagnani Silveira and Thomas Voegtlin. The goal of the company is to produce cryptocurrency backup solutions. Revealer is the company’s first product.

Revealer Pricing

The Revealer plugin for Electrum is free to download.

The Revealer product (the encrypted display and decoding screen) is available online at a price of 19.90 EUR. Your purchase will come as a set of identical cards inside a sealed envelope.

Revealer is available to be shipped worldwide, with shipping estimated to begin in May 2018.

Revealer Conclusion

Revealer is a unique and creative way to protect your passphrase and private key. The passphrase management system consists of two screens that collectively decode your 128-bit encrypted private key without the use of computers. The secret is an XOR operation performed on a display with “white noise”. Without the screen, that white noise is meaningless. With the screen, a decryption operation occurs and your private passphrase is revealed.

The first Revealer units are expected to ship in May 2018. They’re priced at 20 EUR apiece. Meanwhile, you can download the Revealer plugin for the Electrum Bitcoin Wallet today.

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