You could, however, take this process one step further by signing Thomas Voegtlin’s public key. The line will be appended with the bolded text “undefined trust.”Īt this stage, you’ve verified the signature of an Electrum installer. You should see text beginning with “Signed by: Thomas Voegtlin”. The second gives the result of the verification. The first entry gives the installer’s filename. You should be presented with a window titled “Verification Results.” A single line should appear. One of its entries will be “OpenPGP: Verify Signature of File.” Click it. A context menu will appear whose last item is called Services. To verify the signature of the installer, right click on it. The former file is the installer itself and the latter is the signature file. $ echo " is the version of Electrum you downloaded.
Commands are entered, in text form, after this prompt.įrom Terminal, enter the following two commands: $ cd Downloads You’ll see a mostly empty window with a prompt after a dollar sign (“$”).
To access Terminal, press command-spacebar and type “Terminal”. shasum is run from the Terminal application. OSX allows hash values to be checked with the shasum utility. Think of a hash value as an immutable, unique identifier that can be assigned to any file. We are immediately faced with a dilemma: how do we know that our copy of GPG Suite is authentic? We can’t verify a signature because if we could do that we wouldn’t need GPG Suite.įortunately, we can verify the installer’s hash value. Begin by downloading the installer from the main page.
#MAC GPG SUITE INSTALL#
Download and Install GPG SuiteĪ popular PGP implementation on OSX is GPG Suite. Implementations are available for all operating systems. The standard method for signing binaries is known as Pretty Good Privacy (PGP). A forged file that changes a single bit can be detected with this system, as can a developer who attempts to apply an invalid signature. Users verify the download using the developer’s public key. The developer signs a download with a private key.
#MAC GPG SUITE SOFTWARE#
The same idea can be applied to software downloads. Many Bitcoin users are familiar with the idea of digital signatures. The phishing site was followed as the first advertising link from a Google search. For example, in 2017 a Reddit user reported that a phishing site was deploying malware through a forged copy of Electrum, resulting in the loss of five bitcoin. The loss is irreversible and can be life-changing. When the unwitting user enters the private key or seed, the wallet steals the funds. Then they distribute the result, which looks identical to the authentic version. They begin by tweaking some of the open source code. This makes Bitcoin wallets especially profitable targets for malware authors. The Threat of MalwareĪny piece of software that handles your private keys can steal them or sign transactions you never authorized. A procedure for verifying Electrum on Windows is also available.
#MAC GPG SUITE HOW TO#
This tutorial describes how to do so on OSX. To reduce the risk of running malware, users can verify the authenticity of Electrum downloads before using them. Users running this software are trusting their private keys to it. Electrum is one of Bitcoin’s oldest and best-known wallets.
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