Posit Signed Builds
Official Posit builds for Linux-based operating systems are signed with a GnuPG key. You can validate the signature of the binaries yourself; this helps assure that
- The binaries are genuine artifacts produced by Posit, and
- They have not been tampered with by a third party.
Obtaining the Public Key
In order to validate a build’s signature, you must first import and trust Posit’s public code-signing key. Which key you use depends on which build you are using. All builds (new releases or patches to old ones) released after 7/25/2023 must use the post 7/25/2023 key. You can obtain the public key from a keyserver using gpg at the command line:
Post 7/25/2023
Pre 7/25/2023
gpg --keyserver keys.openpgp.org --search-keys 51C0B5BB19F92D60
gpg --keyserver keyserver.ubuntu.com --recv-keys 3F32EE77E331692F
The complete key public key is also reproduced at the end of this page. If you are not able to retrieve the key from the keyserver, save the contents of the GnuPG Public Key below into a file, /tmp/posit.key and run:
gpg --import /tmp/posit.key
Validating Build Signatures
Debian/Ubuntu
On Debian-based Linux systems, use the dpkg-sig command to validate the signature. You may need to install the dpkg-sig package if it isn’t already installed.
dpkg-sig --verify rstudio-download-1.2.3.deb
Red Hat/CentOS/SuSE
On RedHat-based Linux systems, validation is built into the rpm command; however, rpm doesn’t use the GnuPG key store, so you first need to import the public key. You can validate the signature as follows:
Post 7/25/2023
Pre 7/25/2023
gpg --export --armor 51C0B5BB19F92D60 > posit-signing.key
rpm --import posit-signing.key
rpm -K rstudio-download-1.2.3.rpm
gpg --export --armor 3F32EE77E331692F > rstudio-signing.key
rpm --import rstudio-signing.key
rpm -K rstudio-download-1.2.3.rpm
GnuPG Public Key
Post 7/25/2023
Pre 7/25/2023
-----BEGIN PGP PUBLIC KEY BLOCK-----
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-----END PGP PUBLIC KEY BLOCK-----
-----BEGIN PGP PUBLIC KEY BLOCK-----
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=WoWq
-----END PGP PUBLIC KEY BLOCK-----