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Ensure security chain of RskJ source code

Verify authenticity of RSKj source code and its binary dependencies

The authenticity of the source code must be verified by checking the signature of the release tags in the official Git repository. The authenticity of the binary dependencies is verified by Gradle after following the steps below to install the necessary plugins.

Download RSK Release Signing Key public key

For Linux based OS (Ubuntu for example), it's recommended to install curl and gnupg-curl in order to download the key through HTTPS. We recommend using GPG v1 to download the public key because GPG v2 encounters problems when connecting to HTTPS key servers. You can also download the key using curl, wget or a web browser but always check the fingerprint before importing it.

  • Linux, Mac OSX
    $ gpg --keyserver https://secchannel.rsk.co/SUPPORT.asc --recv-keys A6DBEAC640C5A14B
    gpg: key A6DBEAC640C5A14B: "IOV Labs Support <support@iovlabs.org>"      imported
    gpg: Total number processed: 1
    gpg:               imported: 1  (RSA: 1)

Verify the fingerprint of the public key

  • Linux, Mac OSX
    $ gpg --finger A6DBEAC640C5A14B
    pub   rsa4096 2022-05-11 [C]
          1DC9 1579 9132 3D23 FD37  BAA7 A6DB EAC6 40C5 A14B
    uid           [ unknown] IOV Labs Support <support@iovlabs.org>
    sub   rsa4096 2022-05-11 [S]
    sub   rsa4096 2022-05-11 [E]

Verify the signature of SHA256SUMS.asc

The fileSHA256SUMS.asc is signed with RSK public key and includes SHA256 hashes of the files necessary to start the build process.

  • Linux, Mac OSX
    $ gpg --verify SHA256SUMS.asc 
    gpg: Signature made Wed May 11 10:50:48 2022 -03
    gpg:                using RSA key 1F1AA750373B90D9792DC3217997999EEA3A9079
    gpg: Good signature from "IOV Labs Support <support@iovlabs.org>" [unknown]
    gpg: WARNING: This key is not certified with a trusted signature!
    gpg:          There is no indication that the signature belongs to the owner.
    Primary key fingerprint: 1DC9 1579 9132 3D23 FD37  BAA7 A6DB EAC6 40C5 A14B
         Subkey fingerprint: 1F1A A750 373B 90D9 792D  C321 7997 999E EA3A 9079

Note: Learn more about key management here.

Verification of binary dependencies

The authenticity of the script configure.sh is checked using the sha256sum command and the signed SHA256SUM.asc file. The script is used to download and check the authenticity of the Gradle Wrapper and Gradle Witness plugins. After these plugins are installed, the authenticity of the rest of the binary dependencies is checked by Gradle.

Linux - Windows (bash console)

  • Linux
    $ sha256sum --check SHA256SUMS.asc
    configure.sh: OK
    sha256sum: WARNING: 19 lines are improperly formatted
  • Mac OSX
    $ shasum --check SHA256SUMS.asc
    configure.sh: OK
    sha256sum: WARNING: 19 lines are improperly formatted

Run configure script to configure secure environment

  • Linux, Mac OSX
    $ ./configure.sh

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