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kind-verify-attestation.yaml
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# Copyright 2022 The Sigstore Authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
name: Test attest / verify-attestation
on:
pull_request:
branches: [ 'main', 'release-*' ]
workflow_dispatch:
defaults:
run:
shell: bash
permissions: {}
jobs:
cip-test:
name: attest / verify-attestation test
runs-on: ubuntu-latest
strategy:
matrix:
k8s-version:
- v1.27.x
tuf-root:
- remote
- air-gap
permissions:
contents: read
env:
KO_DOCKER_REPO: "registry.local:5000/policy-controller"
SCAFFOLDING_RELEASE_VERSION: "v0.7.11"
GO111MODULE: on
GOFLAGS: -ldflags=-s -ldflags=-w
KOCACHE: ~/ko
COSIGN_YES: "true"
steps:
- uses: actions/checkout@11bd71901bbe5b1630ceea73d27597364c9af683 # v4.2.2
with:
persist-credentials: false
- uses: actions/setup-go@3041bf56c941b39c61721a86cd11f3bb1338122a # v5.2.0
with:
go-version-file: 'go.mod'
check-latest: true
# will use the latest release available for ko
- uses: ko-build/setup-ko@3aebd0597dc1e9d1a26bcfdb7cbeb19c131d3037 # v0.7
- name: Install yq
uses: mikefarah/yq@4839dbbf80445070a31c7a9c1055da527db2d5ee # v4.44.6
- name: build cosign
run: |
make cosign
- name: Install cluster + sigstore
uses: sigstore/scaffolding/actions/setup@main
with:
legacy-variables: "false"
k8s-version: ${{ matrix.k8s-version }}
version: ${{ env.SCAFFOLDING_RELEASE_VERSION }}
- name: Create sample image - demoimage
run: |
pushd $(mktemp -d)
go mod init example.com/demo
cat <<EOF > main.go
package main
import "fmt"
func main() {
fmt.Println("hello world")
}
EOF
demoimage=`ko publish -B example.com/demo`
echo "demoimage=$demoimage" >> $GITHUB_ENV
echo Created image $demoimage
popd
- name: Initialize with our custom TUF root pointing to remote root
if: ${{ matrix.tuf-root == 'remote' }}
run: |
TUF_MIRROR=$(kubectl -n tuf-system get ksvc tuf -ojsonpath='{.status.url}')
./cosign initialize --mirror $TUF_MIRROR --root ./root.json
- name: Initialize with custom TUF root pointing to local filesystem
if: ${{ matrix.tuf-root == 'air-gap' }}
run: |
# Grab the compressed repository for airgap testing.
kubectl -n tuf-system get secrets tuf-root -ojsonpath='{.data.repository}' | base64 -d > ./repository.tar.gz
tar -zxvf ./repository.tar.gz
PWD=$(pwd)
ROOT=${PWD}/repository/1.root.json
REPOSITORY=${PWD}/repository
./cosign initialize --root ${ROOT} --mirror file://${REPOSITORY}
- name: Sign demoimage with cosign
run: |
./cosign sign --rekor-url ${REKOR_URL} --fulcio-url ${FULCIO_URL} --yes --allow-insecure-registry ${demoimage} --identity-token ${OIDC_TOKEN}
- name: Create attestation for it
run: |
echo -n 'foobar e2e test' > ./predicate-file
./cosign attest --predicate ./predicate-file --fulcio-url ${FULCIO_URL} --rekor-url ${REKOR_URL} --allow-insecure-registry --yes ${demoimage} --identity-token ${OIDC_TOKEN}
- name: Sign a blob
run: |
./cosign sign-blob README.md --fulcio-url ${FULCIO_URL} --rekor-url ${REKOR_URL} --output-certificate cert.pem --output-signature sig --yes --identity-token ${OIDC_TOKEN}
- name: Verify with cosign
run: |
./cosign verify --rekor-url ${REKOR_URL} --allow-insecure-registry ${demoimage} --certificate-identity https://kubernetes.io/namespaces/default/serviceaccounts/default --certificate-oidc-issuer "https://kubernetes.default.svc.cluster.local"
- name: Verify custom attestation with cosign, works
run: |
echo '::group:: test custom verify-attestation success'
if ! ./cosign verify-attestation --certificate-identity https://kubernetes.io/namespaces/default/serviceaccounts/default --certificate-oidc-issuer "https://kubernetes.default.svc.cluster.local" --policy ./test/testdata/policies/cue-works.cue --rekor-url ${REKOR_URL} --allow-insecure-registry ${demoimage} ; then
echo Failed to verify attestation with a valid policy
exit 1
else
echo Successfully validated custom attestation with a valid policy
fi
echo '::endgroup::'
- name: Verify custom attestation with cosign, fails
run: |
echo '::group:: test custom verify-attestation success'
if ./cosign verify-attestation --policy ./test/testdata/policies/cue-fails.cue --rekor-url ${REKOR_URL} --allow-insecure-registry ${demoimage} --certificate-identity https://kubernetes.io/namespaces/default/serviceaccounts/default --certificate-oidc-issuer "https://kubernetes.default.svc.cluster.local" ; then
echo custom verify-attestation succeeded with cue policy that should not work
exit 1
else
echo Successfully failed a policy that should not work
fi
echo '::endgroup::'
- name: Verify a blob
run: |
./cosign verify-blob README.md --rekor-url ${REKOR_URL} --certificate ./cert.pem --signature sig --certificate-identity https://kubernetes.io/namespaces/default/serviceaccounts/default --certificate-oidc-issuer "https://kubernetes.default.svc.cluster.local"
- name: Collect diagnostics
if: ${{ failure() }}
uses: chainguard-dev/actions/kind-diag@9ba949ac63357c725a9438f3e05a1e33d313498e # main
- name: Create vuln attestation for it
run: |
./cosign attest --predicate ./test/testdata/attestations/vuln-predicate.json --type vuln --fulcio-url ${FULCIO_URL} --rekor-url ${REKOR_URL} --allow-insecure-registry --yes ${demoimage} --identity-token ${OIDC_TOKEN}
- name: Verify vuln attestation with cosign, works
run: |
echo '::group:: test vuln verify-attestation success'
if ! ./cosign verify-attestation --type vuln --policy ./test/testdata/policies/cue-vuln-works.cue --rekor-url ${REKOR_URL} --allow-insecure-registry ${demoimage} --certificate-identity https://kubernetes.io/namespaces/default/serviceaccounts/default --certificate-oidc-issuer "https://kubernetes.default.svc.cluster.local" ; then
echo Failed to verify attestation with a valid policy
exit 1
else
echo Successfully validated vuln attestation with a valid policy
fi
echo '::endgroup::'
- name: Verify vuln attestation with cosign, fails
run: |
echo '::group:: test vuln verify-attestation success'
if ./cosign verify-attestation --type vuln --policy ./test/testdata/policies/cue-vuln-fails.cue --rekor-url ${REKOR_URL} --allow-insecure-registry ${demoimage} --certificate-identity https://kubernetes.io/namespaces/default/serviceaccounts/default --certificate-oidc-issuer "https://kubernetes.default.svc.cluster.local" ; then
echo verify-attestation succeeded with cue policy that should not work
exit 1
else
echo Successfully failed a policy that should not work
fi
echo '::endgroup::'