From 5e1fffa87191c3566bcbe20c6e8d29d5f21651d5 Mon Sep 17 00:00:00 2001 From: Mounir IDRASSI Date: Sat, 13 May 2017 17:34:16 +0200 Subject: Add HTML documentation. --- doc/html/Digital Signatures.html | 99 ++++++++++++++++++++++++++++++++++++++++ 1 file changed, 99 insertions(+) create mode 100644 doc/html/Digital Signatures.html (limited to 'doc/html/Digital Signatures.html') diff --git a/doc/html/Digital Signatures.html b/doc/html/Digital Signatures.html new file mode 100644 index 00000000..17717b48 --- /dev/null +++ b/doc/html/Digital Signatures.html @@ -0,0 +1,99 @@ + + + + +VeraCrypt - Free Open source disk encryption with strong security for the Paranoid + + + + + + +
+VeraCrypt +
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+Documentation +>> +Miscellaneous +>> +Digital Signatures +

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+

Digital Signatures

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Why Verify Digital Signatures

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It might happen that a VeraCrypt installation package you download from our server was created or modified by an attacker. For example, the attacker could exploit a vulnerability in the server software we use and alter the installation packages stored on + the server, or he/she could alter any of the files en route to you.
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+Therefore, you should always verify the integrity and authenticity of each VeraCrypt distribution package you download or otherwise obtain from any source. In other words, you should always make sure that the file was created by us and it was not altered by + an attacker. One way to do so is to verify so-called digital signature(s) of the file.

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Types of Digital Signatures We Use

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We currently use two types of digital signatures:

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Advantages of X.509 Signatures

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X.509 signatures have the following advantages, in comparison to PGP signatures:

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Advantages of PGP Signatures

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PGP signatures have the following advantages, in comparison to X.509 signatures:

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How to Verify X.509 Signatures

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Please note that X.509 signatures are currently available only for the VeraCrypt self-extracting installation packages for Windows. An X.509 digital signature is embedded in each of those files along with the digital certificate of the VeraCrypt Foundation + issued by a public certification authority. To verify the integrity and authenticity of a self-extracting installation package for Windows, follow these steps:

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  1. Download the VeraCrypt self-extracting installation package.
  2. In the Windows Explorer, click the downloaded file (‘VeraCrypt Setup.exe’) with the right mouse button and select ‘Properties’ from the context menu. +
  3. In the Properties dialog window, select the ‘Digital Signatures’ tab. +
  4. On the ‘Digital Signatures’ tab, in the ‘Signature list’, double click the line saying "IDRIX" or +"IDRIX SARL".
  5. The ‘Digital Signature Details’ dialog window should appear now. If you see the following sentence at the top of the dialog window, then the integrity and authenticity of the package have been successfully verified:
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    +"This digital signature is OK."
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    +If you do not see the above sentence, the file is very likely corrupted. Note: On some obsolete versions of Windows, some of the necessary certificates are missing, which causes the signature verification to fail. +
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How to Verify PGP Signatures

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To verify a PGP signature, follow these steps:

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  1. Install any public-key encryption software that supports PGP signatures. For Windows, you can download +Gpg4win. For more information, you can visit +https://www.gnupg.org/.
  2. Create a private key (for information on how to do so, please see the documentation for the public-key encryption software). +
  3. Download our PGP public key from IDRIX website (https://www.idrix.fr/VeraCrypt/VeraCrypt_PGP_public_key.asc) or from a trusted public key repository + (ID=0x54DDD393), and import the downloaded key to your keyring (for information on how to do so, please see the documentation for the public-key encryption software). Please check that its fingerprint is +993B7D7E8E413809828F0F29EB559C7C54DDD393.
  4. Sign the imported key with your private key to mark it as trusted (for information on how to do so, please see the documentation for the public-key encryption software).
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    +Note: If you skip this step and attempt to verify any of our PGP signatures, you will receive an error message stating that the signing key is invalid. +
  5. Download the digital signature by downloading the PGP Signature of the file you want to verify (on the +Downloads page). +
  6. Verify the downloaded signature (for information on how to do so, please see the documentation for the public-key encryption software). +
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Under Linux, these steps can be achieved using the following commands:

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