Merge pull request #20543 from hashicorp/hashicorp-signing-key

plugin/discovery: Verify sig against HashiCorp key

plugin/discovery/get.go

@@ -383,14 +383,23 @@ func (i *ProviderInstaller) getProviderChecksum(urls *response.TerraformProvider
  return "", fmt.Errorf("error fetching checksums signature: %s", err)
  }
 
- // Verify GPG signature.
+ // Verify the GPG signature returned from the Registry.
  asciiArmor := urls.SigningKeys.GPGASCIIArmor()
  signer, err := verifySig(shasums, signature, asciiArmor)
  if err != nil {
  log.Printf("[ERROR] error verifying signature: %s", err)
  return "", fmt.Errorf(gpgVerificationError)
  }
 
+ // Also verify the GPG signature against the HashiCorp public key. This is
+ // a temporary additional check until a more robust key verification
+ // process is added in a future release.
+ _, err = verifySig(shasums, signature, HashicorpPublicKey)
+ if err != nil {
+ log.Printf("[ERROR] error verifying signature against HashiCorp public key: %s", err)
+ return "", fmt.Errorf(gpgVerificationError)
+ }
+
  // Display identity for GPG key which succeeded verifying the signature.
  // This could also be used to display to the user with i.Ui.Info().
  identities := []string{}

plugin/discovery/hashicorp.go

@@ -0,0 +1,34 @@
+package discovery
+
+// HashicorpPublicKey is the HashiCorp public key, also available at
+// https://www.hashicorp.com/security
+const HashicorpPublicKey = `-----BEGIN PGP PUBLIC KEY BLOCK-----
+Version: GnuPG v1
+
+mQENBFMORM0BCADBRyKO1MhCirazOSVwcfTr1xUxjPvfxD3hjUwHtjsOy/bT6p9f
+W2mRPfwnq2JB5As+paL3UGDsSRDnK9KAxQb0NNF4+eVhr/EJ18s3wwXXDMjpIifq
+fIm2WyH3G+aRLTLPIpscUNKDyxFOUbsmgXAmJ46Re1fn8uKxKRHbfa39aeuEYWFA
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+SwbbWBFd5RNPOR0qzrb/0p9ksKK48IIfH2FvABEBAAG0K0hhc2hpQ29ycCBTZWN1
+cml0eSA8c2VjdXJpdHlAaGFzaGljb3JwLmNvbT6JATgEEwECACIFAlMORM0CGwMG
+CwkIBwMCBhUIAgkKCwQWAgMBAh4BAheAAAoJEFGFLYc0j/xMyWIIAIPhcVqiQ59n
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+sJZnJgXKpybpibGiiTtmnFLOwibmprSu04rsnP4ncdC2XRD4wIjoyA+4PKgX3sCO
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+mTT6f34/oiY+Jam3zCK7RDN/OjuWheIPGj/Qbx9JuNiwgX6yRj7OE1tjUx6d8g9y
+0H1fmLJbb3WZZbuuGFnK6qrE3bGeY8+AWaJAZ37wpWh1p0cAEQEAAYkBHwQYAQIA
+CQUCUw5EzQIbDAAKCRBRhS2HNI/8TJntCAClU7TOO/X053eKF1jqNW4A1qpxctVc
+z8eTcY8Om5O4f6a/rfxfNFKn9Qyja/OG1xWNobETy7MiMXYjaa8uUx5iFy6kMVaP
+0BXJ59NLZjMARGw6lVTYDTIvzqqqwLxgliSDfSnqUhubGwvykANPO+93BBx89MRG
+unNoYGXtPlhNFrAsB1VR8+EyKLv2HQtGCPSFBhrjuzH3gxGibNDDdFQLxxuJWepJ
+EK1UbTS4ms0NgZ2Uknqn1WRU1Ki7rE4sTy68iZtWpKQXZEJa0IGnuI2sSINGcXCJ
+oEIgXTMyCILo34Fa/C6VCm2WBgz9zZO8/rHIiQm1J5zqz0DrDwKBUM9C
+=LYpS
+-----END PGP PUBLIC KEY BLOCK-----`