mirror of
https://github.com/kyverno/kyverno.git
synced 2024-12-14 11:57:48 +00:00
334 lines
14 KiB
Go
334 lines
14 KiB
Go
package cosign
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import (
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"context"
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"crypto/x509"
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"fmt"
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"io"
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"testing"
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v1 "github.com/google/go-containerregistry/pkg/v1"
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"github.com/google/go-containerregistry/pkg/v1/types"
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"github.com/kyverno/kyverno/pkg/images"
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"github.com/kyverno/kyverno/pkg/registryclient"
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"github.com/sigstore/cosign/v2/pkg/cosign"
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"github.com/sigstore/cosign/v2/pkg/cosign/bundle"
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"github.com/sigstore/cosign/v2/pkg/oci"
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"gotest.tools/assert"
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)
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const cosignPayload = `{
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"critical": {
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"identity": {
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"docker-reference": "registry-v2.nirmata.io/pause"
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},
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"image": {
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"docker-manifest-digest": "sha256:4a1c4b21597c1b4415bdbecb28a3296c6b5e23ca4f9feeb599860a1dac6a0108"
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},
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"type": "cosign container image signature"
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},
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"optional": {
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"foo": "bar",
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"bar": "baz"
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}
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}`
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const keylessPayload = `{
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"critical": {
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"identity": {
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"docker-reference": "ghcr.io/kyverno/test-verify-image"
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},
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"image": {
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"docker-manifest-digest": "sha256:ee53528c4e3c723945cf870d73702b76135955a218dd7497bf344aa73ebb4227"
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},
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"type": "cosign container image signature"
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},
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"optional": {
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"Bundle": {
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"SignedEntryTimestamp": "--TIME-STAMP--",
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"Payload": {
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"integratedTime": 1689234389,
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"logIndex": 27432442,
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"logID": "--LOG-ID--"
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}
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},
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"Issuer": "https://accounts.google.com",
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"Subject": "kyverno@nirmata.com"
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}
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}`
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const globalRekorPubKey = `-----BEGIN PUBLIC KEY-----
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MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAE2G2Y+2tabdTV5BcGiBIx0a9fAFwr
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kBbmLSGtks4L3qX6yYY0zufBnhC8Ur/iy55GhWP/9A/bY2LhC30M9+RYtw==
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-----END PUBLIC KEY-----
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`
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const wrongPubKey = `-----BEGIN PUBLIC KEY-----
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MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEoiR2ouEAp4JS/JIgkCVYCxpp/dMe
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4Mkc/92O8rbWs6xIAcIEju7+Z2yecpQH6RbztEVCZbBZhEVfMdRgWKOrrQ==
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-----END PUBLIC KEY-----`
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func TestCosignPayload(t *testing.T) {
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image := "registry-v2.nirmata.io/pause"
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signedPayloads := cosign.SignedPayload{Payload: []byte(cosignPayload)}
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ociSig, err := getSignature(signedPayloads)
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assert.NilError(t, err)
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p, err := extractPayload([]oci.Signature{ociSig})
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assert.NilError(t, err)
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a := map[string]string{"foo": "bar"}
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err = checkAnnotations(p, a)
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assert.NilError(t, err)
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d, err := extractDigest(image, p)
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assert.NilError(t, err)
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assert.Equal(t, d, "sha256:4a1c4b21597c1b4415bdbecb28a3296c6b5e23ca4f9feeb599860a1dac6a0108")
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image2 := "ghcr.io/kyverno/test-verify-image"
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signedPayloads2 := cosign.SignedPayload{Payload: []byte(keylessPayload)}
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ociSig, err = getSignature(signedPayloads2)
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assert.NilError(t, err)
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signatures2 := []oci.Signature{ociSig}
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p2, err := extractPayload(signatures2)
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assert.NilError(t, err)
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d2, err := extractDigest(image2, p2)
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assert.NilError(t, err)
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assert.Equal(t, d2, "sha256:ee53528c4e3c723945cf870d73702b76135955a218dd7497bf344aa73ebb4227")
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}
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func TestCosignKeyless(t *testing.T) {
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opts := images.Options{
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ImageRef: "ghcr.io/jimbugwadia/pause2",
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Issuer: "https://github.com/",
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Subject: "jim",
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RekorURL: "https://rekor.sigstore.dev",
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IgnoreSCT: true,
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}
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rc, err := registryclient.New()
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assert.NilError(t, err)
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opts.Client = rc
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verifier := &cosignVerifier{}
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_, err = verifier.VerifySignature(context.TODO(), opts)
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assert.ErrorContains(t, err, "subject mismatch: expected jim, received jim@nirmata.com")
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opts.Subject = "jim@nirmata.com"
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_, err = verifier.VerifySignature(context.TODO(), opts)
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assert.ErrorContains(t, err, "issuer mismatch: expected https://github.com/, received https://github.com/login/oauth")
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opts.Issuer = "https://github.com/login/oauth"
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_, err = verifier.VerifySignature(context.TODO(), opts)
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assert.NilError(t, err)
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}
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func TestRekorPubkeys(t *testing.T) {
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opts := images.Options{
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ImageRef: "ghcr.io/jimbugwadia/pause2",
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Issuer: "https://github.com/login/oauth",
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Subject: "jim@nirmata.com",
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RekorURL: "--INVALID--", // To avoid using the default rekor url as thats where signature is uploaded
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RekorPubKey: wrongPubKey,
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IgnoreSCT: true,
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}
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rc, err := registryclient.New()
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assert.NilError(t, err)
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opts.Client = rc
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verifier := &cosignVerifier{}
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_, err = verifier.VerifySignature(context.TODO(), opts)
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assert.ErrorContains(t, err, "rekor log public key not found for payload")
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opts.RekorPubKey = globalRekorPubKey
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_, err = verifier.VerifySignature(context.TODO(), opts)
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assert.NilError(t, err)
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}
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func TestIgnoreTlogsandIgnoreSCT(t *testing.T) {
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err := SetMock("ghcr.io/kyverno/test-verify-image", [][]byte{[]byte(keylessPayload)})
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defer ClearMock()
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assert.NilError(t, err)
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opts := images.Options{
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ImageRef: "ghcr.io/kyverno/test-verify-image",
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}
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rc, err := registryclient.New()
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assert.NilError(t, err)
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opts.Client = rc
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verifier := &cosignVerifier{}
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opts.RekorPubKey = "--INVALID KEY--"
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_, err = verifier.VerifySignature(context.TODO(), opts)
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// RekorPubKey is checked when ignoreTlog is set to false
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assert.ErrorContains(t, err, "failed to load Rekor public keys: failed to get rekor public keys: PEM decoding failed")
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opts.IgnoreTlog = true
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_, err = verifier.VerifySignature(context.TODO(), opts)
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// RekorPubKey is NOT checked when ignoreTlog is set to true
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assert.NilError(t, err)
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opts.CTLogsPubKey = "--INVALID KEY--"
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_, err = verifier.VerifySignature(context.TODO(), opts)
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// CTLogsPubKey is checked when ignoreSCT is set to false
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assert.ErrorContains(t, err, "failed to load CTLogs public keys: failed to get transparency log public keys: PEM decoding failed")
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opts.IgnoreSCT = true
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_, err = verifier.VerifySignature(context.TODO(), opts)
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// CTLogsPubKey is NOT checked when ignoreSCT is set to true
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assert.NilError(t, err)
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}
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func TestCTLogsPubkeys(t *testing.T) {
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opts := images.Options{
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ImageRef: "ghcr.io/vishal-chdhry/cosign-test:v1",
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Issuer: "https://accounts.google.com",
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Subject: "vishal.choudhary@nirmata.com",
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RekorPubKey: globalRekorPubKey,
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CTLogsPubKey: wrongPubKey,
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}
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rc, err := registryclient.New()
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assert.NilError(t, err)
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opts.Client = rc
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verifier := &cosignVerifier{}
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_, err = verifier.VerifySignature(context.TODO(), opts)
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assert.ErrorContains(t, err, "no matching signatures: ctfe public key not found for payload.")
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opts.CTLogsPubKey = ""
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_, err = verifier.VerifySignature(context.TODO(), opts)
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assert.NilError(t, err)
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}
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func TestCosignMatchCertificateData(t *testing.T) {
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pem1 := "-----BEGIN CERTIFICATE-----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\n+oZgwE6hsDazJzoTcBZ1mYVF6bAlwVdtMiC98aApG6T+qaBirxSgu7IGQw==\n-----END CERTIFICATE-----\n"
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cert1, err := loadCert([]byte(pem1))
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assert.NilError(t, err)
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subject1 := "https://github.com/JimBugwadia/demo-java-tomcat/.github/workflows/publish.yaml@refs/tags/*"
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issuer1 := "https://token.actions.githubusercontent.com"
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extensions := map[string]string{
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"githubWorkflowTrigger": "push",
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"githubWorkflowSha": "c7645284fa7aebe554618eee879b4d6947f8564e",
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"githubWorkflowName": "build-sign-attest",
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"githubWorkflowRepository": "JimBugwadia/demo-java-tomcat",
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}
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matchErr := matchCertificateData(cert1, subject1, issuer1, extensions)
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assert.NilError(t, matchErr)
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matchErr = matchCertificateData(cert1, "", issuer1, extensions)
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assert.NilError(t, matchErr)
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matchErr = matchCertificateData(cert1, subject1, issuer1, nil)
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assert.NilError(t, matchErr)
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matchErr = matchCertificateData(cert1, "wrong-subject", issuer1, extensions)
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assert.Error(t, matchErr, "subject mismatch: expected wrong-subject, received https://github.com/JimBugwadia/demo-java-tomcat/.github/workflows/publish.yaml@refs/tags/v0.0.22")
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extensions["githubWorkflowTrigger"] = "pull"
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matchErr = matchCertificateData(cert1, subject1, issuer1, extensions)
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assert.Error(t, matchErr, "extension mismatch: expected pull for key githubWorkflowTrigger, received push")
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}
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type testSignature struct {
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cert *x509.Certificate
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}
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func (ts testSignature) Digest() (v1.Hash, error) {
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return v1.Hash{}, fmt.Errorf("not implemented")
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}
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func (ts testSignature) DiffID() (v1.Hash, error) {
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return v1.Hash{}, fmt.Errorf("not implemented")
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}
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func (ts testSignature) Compressed() (io.ReadCloser, error) {
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return nil, fmt.Errorf("not implemented")
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}
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func (ts testSignature) Uncompressed() (io.ReadCloser, error) {
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return nil, fmt.Errorf("not implemented")
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}
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func (ts testSignature) Size() (int64, error) {
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return 0, fmt.Errorf("not implemented")
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}
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func (ts testSignature) MediaType() (types.MediaType, error) {
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return "", fmt.Errorf("not implemented")
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}
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func (ts testSignature) Annotations() (map[string]string, error) {
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return nil, fmt.Errorf("not implemented")
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}
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func (ts testSignature) Payload() ([]byte, error) {
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return nil, fmt.Errorf("not implemented")
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}
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func (ts testSignature) Signature() ([]byte, error) {
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return nil, fmt.Errorf("not implemented")
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}
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func (ts testSignature) Base64Signature() (string, error) {
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return "", fmt.Errorf("not implemented")
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}
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func (ts testSignature) Cert() (*x509.Certificate, error) {
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return ts.cert, nil
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}
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func (ts testSignature) Chain() ([]*x509.Certificate, error) {
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return nil, fmt.Errorf("not implemented")
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}
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func (ts testSignature) Bundle() (*bundle.RekorBundle, error) {
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return nil, fmt.Errorf("not implemented")
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}
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func (ts testSignature) RFC3161Timestamp() (*bundle.RFC3161Timestamp, error) {
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return nil, nil
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}
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func TestCosignMatchSignatures(t *testing.T) {
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pem1 := "-----BEGIN CERTIFICATE-----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\n+oZgwE6hsDazJzoTcBZ1mYVF6bAlwVdtMiC98aApG6T+qaBirxSgu7IGQw==\n-----END CERTIFICATE-----\n"
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cert1, err := loadCert([]byte(pem1))
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assert.NilError(t, err)
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pem2 := "-----BEGIN CERTIFICATE-----\nMIICnjCCAiSgAwIBAgIUfHC63TD7cn1QEYwI6sJ50PclbMMwCgYIKoZIzj0EAwMw\nNzEVMBMGA1UEChMMc2lnc3RvcmUuZGV2MR4wHAYDVQQDExVzaWdzdG9yZS1pbnRl\ncm1lZGlhdGUwHhcNMjIxMTIxMTczNDIwWhcNMjIxMTIxMTc0NDIwWjAAMFkwEwYH\nKoZIzj0CAQYIKoZIzj0DAQcDQgAEpJeio6iqU9TbHm+WV5KmeinSPWFrMFzoduFN\ntvrjMRAJV6qDX7aHvZRQPtSUxt3PvWwPwZz6Id8XwfHgJwtpp6OCAUMwggE/MA4G\nA1UdDwEB/wQEAwIHgDATBgNVHSUEDDAKBggrBgEFBQcDAzAdBgNVHQ4EFgQU+sL4\nr0BAYZhtjWXdqZd6ktDbl60wHwYDVR0jBBgwFoAU39Ppz1YkEZb5qNjpKFWixi4Y\nZD8wHQYDVR0RAQH/BBMwEYEPamltQG5pcm1hdGEuY29tMCwGCisGAQQBg78wAQEE\nHmh0dHBzOi8vZ2l0aHViLmNvbS9sb2dpbi9vYXV0aDCBigYKKwYBBAHWeQIEAgR8\nBHoAeAB2AN09MGrGxxEyYxkeHJlnNwKiSl643jyt/4eKcoAvKe6OAAABhJtBVS4A\nAAQDAEcwRQIgbWUReMySzQUjZBII8Mdfrw7+MtmcPObrU7lDGNzvc40CIQCSa0xj\nafVdGMlgOPxDvc9gkI2ht6eQN2kmZXkNHe95PTAKBggqhkjOPQQDAwNoADBlAjEA\npQJPNKjRHqsfjhTcrvS1tKodYbz/NKWRJQbacmQaEX3aGZEa/Jczp2IFkcU6eEH/\nAjADp3TpZ56DdgAGCFXDRk3xOcgeDtPeIG6i+fq8Xfik+pIFs+thR7n1ya6LmaXv\nkhw=\n-----END CERTIFICATE-----\n"
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cert2, err := loadCert([]byte(pem2))
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assert.NilError(t, err)
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sigs := []oci.Signature{
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testSignature{cert: cert1},
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testSignature{cert: cert2},
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}
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subject1 := "https://github.com/JimBugwadia/demo-java-tomcat/.github/workflows/publish.yaml@refs/tags/*"
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issuer1 := "https://token.actions.githubusercontent.com"
|
|
extensions := map[string]string{
|
|
"githubWorkflowTrigger": "push",
|
|
"githubWorkflowSha": "c7645284fa7aebe554618eee879b4d6947f8564e",
|
|
"githubWorkflowName": "build-sign-attest",
|
|
"githubWorkflowRepository": "JimBugwadia/demo-java-tomcat",
|
|
}
|
|
|
|
subject2 := "*@nirmata.com"
|
|
issuer2 := "https://github.com/login/oauth"
|
|
|
|
matchErr := matchSignatures(sigs, subject1, issuer1, extensions)
|
|
assert.NilError(t, matchErr)
|
|
|
|
matchErr = matchSignatures(sigs, subject2, issuer2, nil)
|
|
assert.NilError(t, matchErr)
|
|
|
|
matchErr = matchSignatures(sigs, subject2, issuer1, nil)
|
|
assert.Error(t, matchErr, "subject mismatch: expected *@nirmata.com, received https://github.com/JimBugwadia/demo-java-tomcat/.github/workflows/publish.yaml@refs/tags/v0.0.22; issuer mismatch: expected https://token.actions.githubusercontent.com, received https://github.com/login/oauth")
|
|
|
|
matchErr = matchSignatures(sigs, subject2, issuer2, extensions)
|
|
assert.ErrorContains(t, matchErr, "extension mismatch")
|
|
}
|