Verify and validate via cosign and slsa-verifier
Prerequisites
Step 1: Verify GUAC image via Cosign
-
Based on the latest GUAC release, validate that the GUAC image is signed and verifiable via cosign by running the following command:
LATEST_VERSION=$(curl https://api.github.com/repos/guacsec/guac/releases/latest | grep tag_name | cut -d : -f2 | tr -d "v\", ") GUAC_DIGEST=$(crane digest ghcr.io/guacsec/guac:v$LATEST_VERSION) cosign verify ghcr.io/guacsec/guac@$GUAC_DIGEST \ --certificate-oidc-issuer https://token.actions.githubusercontent.com \ --certificate-identity https://github.com/guacsec/guac/.github/workflows/release.yaml@refs/tags/v$LATEST_VERSION
You should see an output similar to this:
Verification for ghcr.io/guacsec/guac@sha256:de50517b5a527f031395ba11de5576462bc4db6fa0eef5073f82fab052c2b07e -- The following checks were performed on each of these signatures: - The cosign claims were validated - Existence of the claims in the transparency log was verified offline - The code-signing certificate was verified using trusted certificate authority certificates [{"critical":{"identity":{"docker-reference":"ghcr.io/guacsec/guac"},"image":{"docker-manifest-digest":"sha256:de50517b5a527f031395ba11de5576462bc4db6fa0eef5073f82fab052c2b07e"},"type":"cosign container image signature"},"optional":{"1.3.6.1.4.1.57264.1.1":"https://token.actions.githubusercontent.com","1.3.6.1.4.1.57264.1.2":"push","1.3.6.1.4.1.57264.1.3":"463b8004beebbd413ecf556e4fc5a1bf986534ab","1.3.6.1.4.1.57264.1.4":"release","1.3.6.1.4.1.57264.1.5":"guacsec/guac","1.3.6.1.4.1.57264.1.6":"refs/tags/v0.1.2","Bundle":{"SignedEntryTimestamp":"MEUCIBuRzf/8IPBSjPINRC1XvzmSUhX83wGj+tX+g/7FektaAiEAq84FtWJAj+39qf8AB9ZJvbLOUUGCPdM9SsC1mDyZW24=","Payload":{"body":"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","integratedTime":1692210967,"logIndex":31541333,"logID":"c0d23d6ad406973f9559f3ba2d1ca01f84147d8ffc5b8445c224f98b9591801d"}},"Issuer":"https://token.actions.githubusercontent.com","Subject":"https://github.com/guacsec/guac/.github/workflows/release.yaml@refs/tags/v0.1.2","git_sha":"463b8004beebbd413ecf556e4fc5a1bf986534ab","githubWorkflowName":"release","githubWorkflowRef":"refs/tags/v0.1.2","githubWorkflowRepository":"guacsec/guac","githubWorkflowSha":"463b8004beebbd413ecf556e4fc5a1bf986534ab","githubWorkflowTrigger":"push"}}]
-
We can also verify the SLSA attestation on the image via:
cosign verify-attestation ghcr.io/guacsec/guac@$GUAC_DIGEST \ --certificate-identity https://github.com/slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@refs/tags/v1.8.0 \ --certificate-oidc-issuer https://token.actions.githubusercontent.com --type 'https://slsa.dev/provenance/v0.2'
you should see an output similar to this:
Verification for ghcr.io/guacsec/guac@sha256:de50517b5a527f031395ba11de5576462bc4db6fa0eef5073f82fab052c2b07e -- The following checks were performed on each of these signatures: - The cosign claims were validated - Existence of the claims in the transparency log was verified offline - The code-signing certificate was verified using trusted certificate authority certificates Certificate subject: https://github.com/slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@refs/tags/v1.8.0 Certificate issuer URL: https://token.actions.githubusercontent.com GitHub Workflow Trigger: push GitHub Workflow SHA: 463b8004beebbd413ecf556e4fc5a1bf986534ab GitHub Workflow Name: release GitHub Workflow Repository: guacsec/guac GitHub Workflow Ref: refs/tags/v0.1.2 {"payloadType":"application/vnd.in-toto+json","payload":"{"_type":"https://in-toto.io/Statement/v0.1","predicateType":"https://slsa.dev/provenance/v0.2","subject":[{"name":"ghcr.io/guacsec/guac","digest":{"sha256":"de50517b5a527f031395ba11de5576462bc4db6fa0eef5073f82fab052c2b07e"}}],"predicate":{"builder":{"id":"https://github.com/slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@refs/tags/v1.8.0"},"buildType":"https://github.com/slsa-framework/slsa-github-generator/container@v1","invocation":{"configSource":{"uri":"git+https://github.com/guacsec/guac@refs/tags/v0.1.2","digest":{"sha1":"463b8004beebbd413ecf556e4fc5a1bf986534ab"},"entryPoint":".github/workflows/release.yaml"},"parameters":{},"environment":{"github_actor":"pxp928","github_actor_id":"88045217","github_base_ref":"","github_event_name":"push","github_event_payload":{"after":"463b8004beebbd413ecf556e4fc5a1bf986534ab","base_ref":"refs/heads/main","before":"0000000000000000000000000000000000000000","commits":[],"compare":"https://github.com/guacsec/guac/compare/v0.1.2","created":true,"deleted":false,"forced":false,"head_commit":{"author":{"email":"42319948+nathannaveen@users.noreply.github.com","name":"Nathan Naveen","username":"nathannaveen"},"committer":{"email":"noreply@github.com","name":"GitHub","username":"web-flow"},"distinct":true,"id":"463b8004beebbd413ecf556e4fc5a1bf986534ab","message":":book: Included comments for the bfs on patchPlanning (#1130)\n\n* [docs] Included comments for the bfs on patchPlanning\n\n* Included comments on SearchDependenciesFromStartNode\n\nSigned-off-by: nathannaveen \u003c42319948+nathannaveen@users.noreply.github.com\u003e\n\n* Updated Based on Code Review\n\nSigned-off-by: nathannaveen \u003c42319948+nathannaveen@users.noreply.github.com\u003e\n\n* Removed extra return value\n\nSigned-off-by: nathannaveen \u003c42319948+nathannaveen@users.noreply.github.com\u003e\n\n* Updated based on code review\n\nSigned-off-by: nathannaveen \u003c42319948+nathannaveen@users.noreply.github.com\u003e\n\n---------\n\nSigned-off-by: nathannaveen \u003c42319948+nathannaveen@users.noreply.github.com\u003e","timestamp":"2023-08-15T21:11:27Z","tree_id":"fd0653ca03c3c5a55b101b073588484af8ffc35e","url":"https://github.com/guacsec/guac/commit/463b8004beebbd413ecf556e4fc5a1bf986534ab"},"organization":{"avatar_url":"https://avatars.githubusercontent.com/u/111393891?v=4","description":null,"events_url":"https://api.github.com/orgs/guacsec/events","hooks_url":"https://api.github.com/orgs/guacsec/hooks","id":111393891,"issues_url":"https://api.github.com/orgs/guacsec/issues","login":"guacsec","members_url":"https://api.github.com/orgs/guacsec/members{/member}","node_id":"O_kgDOBqO8Yw","public_members_url":"https://api.github.com/orgs/guacsec/public_members{/member}","repos_url":"https://api.github.com/orgs/guacsec/repos","url":"https://api.github.com/orgs/guacsec"},"pusher":{"email":"88045217+pxp928@users.noreply.github.com","name":"pxp928"},"ref":"refs/tags/v0.1.2","repository":{"allow_forking":true,"archive_url":"https://api.github.com/repos/guacsec/guac/{archive_format}{/ref}","archived":false,"assignees_url":"https://api.github.com/repos/guacsec/guac/assignees{/user}","blobs_url":"https://api.github.com/repos/guacsec/guac/git/blobs{/sha}","branches_url":"https://api.github.com/repos/guacsec/guac/branches{/branch}","clone_url":"https://github.com/guacsec/guac.git","collaborators_url":"https://api.github.com/repos/guacsec/guac/collaborators{/collaborator}","comments_url":"https://api.github.com/repos/guacsec/guac/comments{/number}","commits_url":"https://api.github.com/repos/guacsec/guac/commits{/sha}","compare_url":"https://api.github.com/repos/guacsec/guac/compare/{base}...{head}","contents_url":"https://api.github.com/repos/guacsec/guac/contents/{+path}","contributors_url":"https://api.github.com/repos/guacsec/guac/contributors","created_at":1654882087,"default_branch":"main","deployments_url":"https://api.github.com/repos/guacsec/guac/deployments","description":"GUAC aggregates software security metadata into a high fidelity graph database.","disabled":false,"downloads_url":"https://api.github.com/repos/guacsec/guac/downloads","events_url":"https://api.github.com/repos/guacsec/guac/events","fork":false,"forks":116,"forks_count":116,"forks_url":"https://api.github.com/repos/guacsec/guac/forks","full_name":"guacsec/guac","git_commits_url":"https://api.github.com/repos/guacsec/guac/git/commits{/sha}","git_refs_url":"https://api.github.com/repos/guacsec/guac/git/refs{/sha}","git_tags_url":"https://api.github.com/repos/guacsec/guac/git/tags{/sha}","git_url":"git://github.com/guacsec/guac.git","has_discussions":false,"has_downloads":true,"has_issues":true,"has_pages":false,"has_projects":true,"has_wiki":true,"homepage":"https://guac.sh","hooks_url":"https://api.github.com/repos/guacsec/guac/hooks","html_url":"https://github.com/guacsec/guac","id":502127166,"is_template":false,"issue_comment_url":"https://api.github.com/repos/guacsec/guac/issues/comments{/number}","issue_events_url":"https://api.github.com/repos/guacsec/guac/issues/events{/number}","issues_url":"https://api.github.com/repos/guacsec/guac/issues{/number}","keys_url":"https://api.github.com/repos/guacsec/guac/keys{/key_id}","labels_url":"https://api.github.com/repos/guacsec/guac/labels{/name}","language":"Go","languages_url":"https://api.github.com/repos/guacsec/guac/languages","license":{"key":"apache-2.0","name":"Apache License 2.0","node_id":"MDc6TGljZW5zZTI=","spdx_id":"Apache-2.0","url":"https://api.github.com/licenses/apache-2.0"},"master_branch":"main","merges_url":"https://api.github.com/repos/guacsec/guac/merges","milestones_url":"https://api.github.com/repos/guacsec/guac/milestones{/number}","mirror_url":null,"name":"guac","node_id":"R_kgDOHe3aPg","notifications_url":"https://api.github.com/repos/guacsec/guac/notifications{?since,all,participating}","open_issues":100,"open_issues_count":100,"organization":"guacsec","owner":{"avatar_url":"https://avatars.githubusercontent.com/u/111393891?v=4","email":null,"events_url":"https://api.github.com/users/guacsec/events{/privacy}","followers_url":"https://api.github.com/users/guacsec/followers","following_url":"https://api.github.com/users/guacsec/following{/other_user}","gists_url":"https://api.github.com/users/guacsec/gists{/gist_id}","gravatar_id":"","html_url":"https://github.com/guacsec","id":111393891,"login":"guacsec","name":"guacsec","node_id":"O_kgDOBqO8Yw","organizations_url":"https://api.github.com/users/guacsec/orgs","received_events_url":"https://api.github.com/users/guacsec/received_events","repos_url":"https://api.github.com/users/guacsec/repos","site_admin":false,"starred_url":"https://api.github.com/users/guacsec/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/guacsec/subscriptions","type":"Organization","url":"https://api.github.com/users/guacsec"},"private":false,"pulls_url":"https://api.github.com/repos/guacsec/guac/pulls{/number}","pushed_at":1692210784,"releases_url":"https://api.github.com/repos/guacsec/guac/releases{/id}","size":6290,"ssh_url":"git@github.com:guacsec/guac.git","stargazers":1004,"stargazers_count":1004,"stargazers_url":"https://api.github.com/repos/guacsec/guac/stargazers","statuses_url":"https://api.github.com/repos/guacsec/guac/statuses/{sha}","subscribers_url":"https://api.github.com/repos/guacsec/guac/subscribers","subscription_url":"https://api.github.com/repos/guacsec/guac/subscription","svn_url":"https://github.com/guacsec/guac","tags_url":"https://api.github.com/repos/guacsec/guac/tags","teams_url":"https://api.github.com/repos/guacsec/guac/teams","topics":[],"trees_url":"https://api.github.com/repos/guacsec/guac/git/trees{/sha}","updated_at":"2023-08-15T15:39:59Z","url":"https://github.com/guacsec/guac","visibility":"public","watchers":1004,"watchers_count":1004,"web_commit_signoff_required":false},"sender":{"avatar_url":"https://avatars.githubusercontent.com/u/88045217?v=4","events_url":"https://api.github.com/users/pxp928/events{/privacy}","followers_url":"https://api.github.com/users/pxp928/followers","following_url":"https://api.github.com/users/pxp928/following{/other_user}","gists_url":"https://api.github.com/users/pxp928/gists{/gist_id}","gravatar_id":"","html_url":"https://github.com/pxp928","id":88045217,"login":"pxp928","node_id":"MDQ6VXNlcjg4MDQ1MjE3","organizations_url":"https://api.github.com/users/pxp928/orgs","received_events_url":"https://api.github.com/users/pxp928/received_events","repos_url":"https://api.github.com/users/pxp928/repos","site_admin":false,"starred_url":"https://api.github.com/users/pxp928/starred{/owner}{/repo}","subscriptions_url":"https://api.github.com/users/pxp928/subscriptions","type":"User","url":"https://api.github.com/users/pxp928"}},"github_head_ref":"","github_ref":"refs/tags/v0.1.2","github_ref_type":"tag","github_repository_id":"502127166","github_repository_owner":"guacsec","github_repository_owner_id":"111393891","github_run_attempt":"1","github_run_id":"5882548240","github_run_number":"224","github_sha1":"463b8004beebbd413ecf556e4fc5a1bf986534ab"}},"metadata":{"buildInvocationID":"5882548240-1","completeness":{"parameters":true,"environment":false,"materials":false},"reproducible":false},"materials":[{"uri":"git+https://github.com/guacsec/guac@refs/tags/v0.1.2","digest":{"sha1":"463b8004beebbd413ecf556e4fc5a1bf986534ab"}}]}}","signatures":[{"keyid":"","sig":"MEQCIGod4j6gQywneGxoMj1WaICGb5T6+mmF3a8G3YfTS1oMAiBuiEup7lmOgLpGQKwWIiXQE+keBWYZSmuLgXTKnLh47g=="}]}
Step 2: Download GUAC binary and verify
-
We can also verify the binaries via the checksums associated with each. Download the latest GUAC release guac_checksums.txt file. This contains all the checksums for all artifacts included in the release:
curl -O -L "https://github.com/guacsec/guac/releases/latest/download/guac_checksums.txt"
First we will verify signature of this file via:
LATEST_VERSION=$(curl https://api.github.com/repos/guacsec/guac/releases/latest | grep tag_name | cut -d : -f2 | tr -d "v\", ") cosign verify-blob --cert https://github.com/guacsec/guac/releases/download/v$LATEST_VERSION/guac_checksums.txt-keyless.pem \ --signature https://github.com/guacsec/guac/releases/download/v$LATEST_VERSION/guac_checksums.txt-keyless.sig \ ./guac_checksums.txt \ --certificate-identity https://github.com/guacsec/guac/.github/workflows/release.yaml@refs/tags/v$LATEST_VERSION \ --certificate-oidc-issuer https://token.actions.githubusercontent.com
The output should be:
Verified OK
-
Download the GUAC CLI
guacone
binary for your machine’s OS and architecture from the latest GUAC release. For example Linux x86_64 is `guacone-linux-amd64’. -
Calculate the checksum of the binary. For example:
shasum -a 256 guacone-linux-amd64
which will output:
769040ce66e97a6398e2e697107fbdb02daa2fdeb97784ac70dc38b794c8b02b guacone-linux-amd64
compare this against the guac_checksums.txt downloaded above and you should see that they match.
-
Verify the signature. We generate SLSA 3 provenance using the OpenSSF’s slsa-framework/slsa-github-generator. To verify our release, install the verification tool from slsa-framework/slsa-verifier#installation and verify as follows:
For example if using `guacone-linux-amd64’ the command would would be as follows:
LATEST_VERSION=$(curl https://api.github.com/repos/guacsec/guac/releases/latest | grep tag_name | cut -d : -f2 | tr -d "v\", ") curl -sL https://github.com/guacsec/guac/releases/download/v$LATEST_VERSION/multiple.intoto.jsonl > multiple.intoto.jsonl slsa-verifier verify-artifact ./guacone-linux-amd64 --provenance-path ./multiple.intoto.jsonl --source-uri github.com/guacsec/guac
You should see an output similar to this:
Verified signature against tlog entry index 31541425 at URL: https://rekor.sigstore.dev/api/v1/log/entries/24296fb24b8ad77a020e9997ab4ec1312d9f95e211b528e9a8751f775d78c5542a365cd2bfb82871 Verified build using builder "https://github.com/slsa-framework/slsa-github-generator/.github/workflows/generator_generic_slsa3.yml@refs/tags/v1.8.0" at commit 463b8004beebbd413ecf556e4fc5a1bf986534ab Verifying artifact ./guacone-linux-amd64: PASSED PASSED: Verified SLSA provenance
Step 3: Verify guac-visualizer image via Cosign
-
Similar to the above, we can verify the latest guac-visualizer release, by running the following command. As the current guac-visualizer is in pre-release, we cannot fetch the latest version. Replace the
LATEST_VERSION
with the latest verion for the guac-visualizer:LATEST_VERSION=0.1.1 GUAC_DIGEST=$(crane digest ghcr.io/guacsec/guac-visualizer:v$LATEST_VERSION) cosign verify ghcr.io/guacsec/guac-visualizer@$GUAC_DIGEST \ --certificate-oidc-issuer https://token.actions.githubusercontent.com \ --certificate-identity https://github.com/guacsec/guac-visualizer/.github/workflows/release.yaml@refs/tags/v$LATEST_VERSION
You should see an output similar to this:
Verification for ghcr.io/guacsec/guac-visualizer@sha256:d75c71a4ad5cec96d1a453d7aea7e6ae5886af178a6380dececf695fcc7f3ad1 -- The following checks were performed on each of these signatures: - The cosign claims were validated - Existence of the claims in the transparency log was verified offline - The code-signing certificate was verified using trusted certificate authority certificates [{"critical":{"identity":{"docker-reference":"ghcr.io/guacsec/guac-visualizer"},"image":{"docker-manifest-digest":"sha256:d75c71a4ad5cec96d1a453d7aea7e6ae5886af178a6380dececf695fcc7f3ad1"},"type":"cosign container image signature"},"optional":{"1.3.6.1.4.1.57264.1.1":"https://token.actions.githubusercontent.com","1.3.6.1.4.1.57264.1.2":"push","1.3.6.1.4.1.57264.1.3":"59751aae96e5290cf2cab9f721a63050bf5db42e","1.3.6.1.4.1.57264.1.4":"release-guac-visualizer-image","1.3.6.1.4.1.57264.1.5":"guacsec/guac-visualizer","1.3.6.1.4.1.57264.1.6":"refs/tags/v0.1.1","Bundle":{"SignedEntryTimestamp":"MEUCIHfbwjJNVK4TPGqjf6Duw9enBO4mPANckvN2PJp2jDtjAiEAkEIpM0I34T3yW6q6SaAsAT+ZDyLc5SOdKjH5USCZZqs=","Payload":{"body":"eyJhcGlWZXJzaW9uIjoiMC4wLjEiLCJraW5kIjoiaGFzaGVkcmVrb3JkIiwic3BlYyI6eyJkYXRhIjp7Imhhc2giOnsiYWxnb3JpdGhtIjoic2hhMjU2IiwidmFsdWUiOiJmMzcwMTBlN2NhOWI1YjdiNTY3MDA2OGRmN2M3NmViNTNiMzM4ZjU1NGQ1NjRjNzZhODE2Y2Q0MDNiYTQ1ZGY2In19LCJzaWduYXR1cmUiOnsiY29udGVudCI6Ik1FVUNJUUN5UGZ4S05TaWMycSt6K3U1SEYyQS91WVFBV0pYeUZFeGZpcGd3NW5TNmRnSWdIbStYRUZxUnV3WDF3dEg0TXNpRXVWeEdueWJENTdaVkh5ZUk0SEZuZHQ4PSIsInB1YmxpY0tleSI6eyJjb250ZW50IjoiTFMwdExTMUNSVWRKVGlCRFJWSlVTVVpKUTBGVVJTMHRMUzB0Q2sxSlNVYzFha05EUW0xNVowRjNTVUpCWjBsVllVZFJOelpKZVdOQ2IyWjRiWGRyU1hKQ1IxQmpaREZ1WjA5UmQwTm5XVWxMYjFwSmVtb3dSVUYzVFhjS1RucEZWazFDVFVkQk1WVkZRMmhOVFdNeWJHNWpNMUoyWTIxVmRWcEhWakpOVWpSM1NFRlpSRlpSVVVSRmVGWjZZVmRrZW1SSE9YbGFVekZ3WW01U2JBcGpiVEZzV2tkc2FHUkhWWGRJYUdOT1RXcE5kMDlFUlROTlZHdDRUbFJCZDFkb1kwNU5hazEzVDBSRk0wMVVhM2xPVkVGM1YycEJRVTFHYTNkRmQxbElDa3R2V2tsNmFqQkRRVkZaU1V0dldrbDZhakJFUVZGalJGRm5RVVV2UlVkWU5XdHlZbVJhWW1aU1JVZHFkMDVwYzNkWWJXaHhUR0Y0WTFWVmVuRjNkMjBLTVdKUlpURk9VMlJZUm1Kb1JrdFFjMk5uYjFaVVRqRXlXVTVQVkVGRmVGRXJUbmM0TUU5a01HUnNNM3BKYURKaEwwdFBRMEpaYzNkbloxZElUVUUwUndwQk1WVmtSSGRGUWk5M1VVVkJkMGxJWjBSQlZFSm5UbFpJVTFWRlJFUkJTMEpuWjNKQ1owVkdRbEZqUkVGNlFXUkNaMDVXU0ZFMFJVWm5VVlZFV0ZONUNuTmlRMGRCYms1NWNURk1TV2x1T0c1RmIyc3JjbkZuZDBoM1dVUldVakJxUWtKbmQwWnZRVlV6T1ZCd2VqRlphMFZhWWpWeFRtcHdTMFpYYVhocE5Ga0tXa1E0ZDJGQldVUldVakJTUVZGSUwwSkdOSGRZU1ZwaFlVaFNNR05JVFRaTWVUbHVZVmhTYjJSWFNYVlpNamwwVERKa01WbFhUbnBhVjAxMldqTldhQXBaZVRFeVlWaE9NVmxYZUhCbGJWWjVUSGsxYm1GWVVtOWtWMGwyWkRJNWVXRXlXbk5pTTJSNlRETktiR0pIVm1oak1sVjFaVmRHZEdKRlFubGFWMXA2Q2t3elVtaGFNMDEyWkdwQmRVMVROSGhOUkd0SFEybHpSMEZSVVVKbk56aDNRVkZGUlVzeWFEQmtTRUo2VDJrNGRtUkhPWEphVnpSMVdWZE9NR0ZYT1hVS1kzazFibUZZVW05a1Ywb3hZekpXZVZreU9YVmtSMVoxWkVNMWFtSXlNSGRGWjFsTFMzZFpRa0pCUjBSMmVrRkNRV2RSUldOSVZucGhSRUV5UW1kdmNncENaMFZGUVZsUEwwMUJSVVJDUTJjeFQxUmpNVTFYUm1oYVZHc3lXbFJWZVU5VVFtcGFha3BxV1ZkSk5WcHFZM2xOVjBVeVRYcEJNVTFIU20xT1YxSnBDazVFU214TlEzTkhRMmx6UjBGUlVVSm5OemgzUVZGUlJVaFlTbXhpUjFab1l6SlZkRm96Vm1oWmVURXlZVmhPTVZsWGVIQmxiVlo1VEZkc2RGbFhaR3dLVFVOVlIwTnBjMGRCVVZGQ1p6YzRkMEZSVlVWR01tUXhXVmRPZWxwWFRYWmFNMVpvV1hreE1tRllUakZaVjNod1pXMVdlVTFDTkVkRGFYTkhRVkZSUWdwbk56aDNRVkZaUlVWSVNteGFiazEyWkVkR2JtTjVPVEpOUXpSNFRHcEZkMDkzV1V0TGQxbENRa0ZIUkhaNlFVSkRRVkYwUkVOMGIyUklVbmRqZW05MkNrd3pVblpoTWxaMVRHMUdhbVJIYkhaaWJrMTFXakpzTUdGSVZtbGtXRTVzWTIxT2RtSnVVbXhpYmxGMVdUSTVkRTFIYjBkRGFYTkhRVkZSUW1jM09IY0tRVkZyUlZoQmVHRmhTRkl3WTBoTk5reDVPVzVoV0ZKdlpGZEpkVmt5T1hSTU1tUXhXVmRPZWxwWFRYWmFNMVpvV1hreE1tRllUakZaVjNod1pXMVdlUXBNZVRWdVlWaFNiMlJYU1haa01qbDVZVEphYzJJelpIcE1NMHBzWWtkV2FHTXlWWFZsVjBaMFlrVkNlVnBYV25wTU0xSm9Xak5OZG1ScVFYVk5VelI0Q2sxRVowZERhWE5IUVZGUlFtYzNPSGRCVVc5RlMyZDNiMDVVYXpOT1ZFWm9XVmRWTlU1dFZURk5hbXQzV1RKWmVWa3lSbWxQVjFrelRXcEdhRTVxVFhjS1RsUkNhVnBxVm10WmFsRjVXbFJCWkVKbmIzSkNaMFZGUVZsUEwwMUJSVXhDUVRoTlJGZGtjR1JIYURGWmFURnZZak5PTUZwWFVYZFBaMWxMUzNkWlFncENRVWRFZG5wQlFrUkJVWE5FUTNCdlpFaFNkMk42YjNaTU1tUndaRWRvTVZscE5XcGlNakIyV2pOV2FGa3pUbXhaZVRsdVpGZEdha3hZV25Cak0xWm9DbUpIYkRaYVdFbDNUMEZaUzB0M1dVSkNRVWRFZG5wQlFrUlJVWEZFUTJjeFQxUmpNVTFYUm1oYVZHc3lXbFJWZVU5VVFtcGFha3BxV1ZkSk5WcHFZM2tLVFZkRk1rMTZRVEZOUjBwdFRsZFNhVTVFU214TlEwRkhRMmx6UjBGUlVVSm5OemgzUVZFMFJVVm5kMUZqYlZadFkzazVNRmxYWkhwTU0xbDNUR3BGZFFwTlZFRmFRbWR2Y2tKblJVVkJXVTh2VFVGRlVFSkJjMDFEVkZsM1RXcGpkMDVFVVhkT1JFRnhRbWR2Y2tKblJVVkJXVTh2VFVGRlVVSkNkMDFIYldnd0NtUklRbnBQYVRoMldqSnNNR0ZJVm1sTWJVNTJZbE01Ym1SWFJtcGpNbFpxVFVKclIwTnBjMGRCVVZGQ1p6YzRkMEZTUlVWRGQzZEtUVlJGZUUxNmEzb0tUMFJyZUUxSGIwZERhWE5IUVZGUlFtYzNPSGRCVWtsRldFRjRZV0ZJVWpCalNFMDJUSGs1Ym1GWVVtOWtWMGwxV1RJNWRFd3laREZaVjA1NldsZE5kZ3BhTTFab1dYa3hNbUZZVGpGWlYzaHdaVzFXZVV4NU5XNWhXRkp2WkZkSmRtUXlPWGxoTWxwellqTmtla3d6U214aVIxWm9ZekpWZFdWWFJuUmlSVUo1Q2xwWFducE1NMUpvV2pOTmRtUnFRWFZOVXpSNFRVUm5SME5wYzBkQlVWRkNaemM0ZDBGU1RVVkxaM2R2VGxSck0wNVVSbWhaVjFVMVRtMVZNVTFxYTNjS1dUSlplVmt5Um1sUFYxa3pUV3BHYUU1cVRYZE9WRUpwV21wV2ExbHFVWGxhVkVGVlFtZHZja0puUlVWQldVOHZUVUZGVlVKQldVMUNTRUl4WXpKbmR3cFlVVmxMUzNkWlFrSkJSMFIyZWtGQ1JsRlNVRVJGTVc5a1NGSjNZM3B2ZGt3eVpIQmtSMmd4V1drMWFtSXlNSFphTTFab1dUTk9iRmw1T1c1a1YwWnFDa3hZV25Cak0xWm9Za2RzTmxwWVNYWlpWMDR3WVZjNWRXTjVPWGxrVnpWNlRIcFZORTlVVVRWUFJFVXpUV3BKZGxsWVVqQmFWekYzWkVoTmRrMVVRVmNLUW1kdmNrSm5SVVZCV1U4dlRVRkZWMEpCWjAxQ2JrSXhXVzE0Y0ZsNlEwSnBkMWxMUzNkWlFrSkJTRmRsVVVsRlFXZFNPVUpJYzBGbFVVSXpRVTR3T1FwTlIzSkhlSGhGZVZsNGEyVklTbXh1VG5kTGFWTnNOalF6YW5sMEx6UmxTMk52UVhaTFpUWlBRVUZCUW1sblZITktOVlZCUVVGUlJFRkZaM2RTWjBsb0NrRk1TMngwYW5vd2VGUjBUVkJwY0RBdmNXOWtkM0ZWWlc0M1NHaHdMekZVZDJ4NVJrNWFSM28zWVZNMFFXbEZRWFZYT0RsTmIyZE5VbEpaUVdSUFJWY0tSMW92VVZoMlEycE5jMWRQUVRoU1FVRnBRazV5V2psMk5HcHJkME5uV1VsTGIxcEplbW93UlVGM1RVUmhRVUYzV2xGSmVFRk9hWFpZTWxGR1NrRnFhUW8xUlV4Tk5WRkRlbkJ0ZDBoVVlWTnhhVmxwTTAxelpXMVFaMnM1VVRKdmRsVXpSMEpFYzBGUFlteG5lazE1T0doaWVrcDZlRkZKZDB0TUwzaG9RVWx6Q2tOVlJIVkNVa2xuVjBKT2VVUmpWazUzY3l0VWR5dFFXVEpZWTAxWVIxbGxTREYxUTBjek4zUXJabFpOY0hRNGJVVlNaRU5qZVUxaENpMHRMUzB0UlU1RUlFTkZVbFJKUmtsRFFWUkZMUzB0TFMwSyJ9fX19","integratedTime":1692299701,"logIndex":31716148,"logID":"c0d23d6ad406973f9559f3ba2d1ca01f84147d8ffc5b8445c224f98b9591801d"}},"Issuer":"https://token.actions.githubusercontent.com","Subject":"https://github.com/guacsec/guac-visualizer/.github/workflows/release.yaml@refs/tags/v0.1.1","git_sha":"59751aae96e5290cf2cab9f721a63050bf5db42e","githubWorkflowName":"release-guac-visualizer-image","githubWorkflowRef":"refs/tags/v0.1.1","githubWorkflowRepository":"guacsec/guac-visualizer","githubWorkflowSha":"59751aae96e5290cf2cab9f721a63050bf5db42e","githubWorkflowTrigger":"push"}}]
-
SLSA attestation for the guac-visualizer are currently not generated for v0.1.1 as it is pre-release but will be for all following releases. Verification can be done the following command:
cosign verify-attestation ghcr.io/guacsec/guac-visualizer@$GUAC_DIGEST \ --certificate-identity https://github.com/slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@refs/tags/v1.9.0 \ --certificate-oidc-issuer https://token.actions.githubusercontent.com --type 'https://slsa.dev/provenance/v0.2'
you should see an output similar to this:
Verification for ghcr.io/guacsec/guac-visualizer@visualizer:d75c71a4ad5cec96d1a453d7aea7e6ae5886af178a6380dececf695fcc7f3ad1 -- The following checks were performed on each of these signatures: - The cosign claims were validated - Existence of the claims in the transparency log was verified offline - The code-signing certificate was verified using trusted certificate authority certificates Certificate subject: https://github.com/slsa-framework/slsa-github-generator/.github/workflows/generator_container_slsa3.yml@refs/tags/v1.9.0 Certificate issuer URL: https://token.actions.githubusercontent.com GitHub Workflow Trigger: push GitHub Workflow SHA: 463b8004beebbd413ecf556e4fc5a1bf986534ab GitHub Workflow Name: release GitHub Workflow Repository: guacsec/guac GitHub Workflow Ref: refs/tags/v0.1.2 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