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Add trustroot testdata generator and embedded data (#1325)
* Add trustroot testdata generator and embedded data Signed-off-by: Cody Soyland <[email protected]> * Update whitespace action Signed-off-by: Cody Soyland <[email protected]> * Update codegen Signed-off-by: Cody Soyland <[email protected]> * Add Makefile target for generate-testdata Signed-off-by: Cody Soyland <[email protected]> * Update comments about data format Signed-off-by: Cody Soyland <[email protected]> --------- Signed-off-by: Cody Soyland <[email protected]>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,247 @@ | ||
| // Copyright 2024 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. | ||
|
|
||
| package main | ||
|
|
||
| import ( | ||
| "bytes" | ||
| "context" | ||
| "crypto/ecdsa" | ||
| "crypto/elliptic" | ||
| "crypto/rand" | ||
| "crypto/x509" | ||
| "crypto/x509/pkix" | ||
| "encoding/json" | ||
| "encoding/pem" | ||
| "flag" | ||
| "log" | ||
| "math/big" | ||
| "os" | ||
| "path" | ||
| "path/filepath" | ||
| "time" | ||
|
|
||
| "github.com/sigstore/cosign/v2/pkg/cosign" | ||
| "github.com/sigstore/policy-controller/pkg/apis/config" | ||
| testing "github.com/sigstore/policy-controller/pkg/reconciler/testing/v1alpha1" | ||
| "github.com/sigstore/scaffolding/pkg/repo" | ||
| "github.com/sigstore/sigstore/pkg/cryptoutils" | ||
| ) | ||
|
|
||
| // This program generates test data for the trustroot reconciler. | ||
| // | ||
| // To run this program, you can use the following command from the root of the repo: | ||
| // $ go run hack/gentestdata/gentestdata.go | ||
| // or, | ||
| // $ make generate-testdata | ||
| // | ||
| // The output of this program can be used to update the `marshalledEntry.json` | ||
| // file in the `pkg/reconciler/trustroot/testdata` package. | ||
| // | ||
| // Do not rely on the output of this program to produce valid results. Always | ||
| // verify the output manually before committing. | ||
|
|
||
| var ( | ||
| dir = flag.String("output-dir", "pkg/reconciler/trustroot/testdata", "Output directory") | ||
| ) | ||
|
|
||
| func main() { | ||
| flag.Parse() | ||
| ctfePK, ctfeLogID := genPK() | ||
| rekorPK, rekorLogID := genPK() | ||
| fulcioChain := genCertChain(x509.KeyUsage(x509.ExtKeyUsageCodeSigning)) | ||
| fulcioChainConcat := bytes.Join(fulcioChain, nil) | ||
| tsaChain := genCertChain(x509.KeyUsage(x509.ExtKeyUsageTimeStamping)) | ||
| tsaChainConcat := bytes.Join(tsaChain, nil) | ||
|
|
||
| sigstoreKeysMap := map[string]string{ | ||
| "ctfe": string(ctfePK), | ||
| "fulcio": string(fulcioChainConcat), | ||
| "rekor": string(rekorPK), | ||
| "tsa": string(tsaChainConcat), | ||
| } | ||
| marshalledEntry, err := genTrustRoot(sigstoreKeysMap) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| marshalledEntryFromMirrorFS, tufRepo, rootJSON, err := genTUFRepo(sigstoreKeysMap) | ||
| if err != nil { | ||
| log.Fatal(err) | ||
| } | ||
|
|
||
| mustWriteFile("ctfePublicKey.pem", ctfePK) | ||
| mustWriteFile("ctfeLogID.txt", []byte(ctfeLogID)) | ||
| mustWriteFile("rekorPublicKey.pem", rekorPK) | ||
| mustWriteFile("rekorLogID.txt", []byte(rekorLogID)) | ||
| mustWriteFile("fulcioCertChain.pem", fulcioChainConcat) | ||
| mustWriteFile("tsaCertChain.pem", tsaChainConcat) | ||
| mustWriteFile("marshalledEntry.json", marshalledEntry) | ||
| mustWriteFile("marshalledEntryFromMirrorFS.json", marshalledEntryFromMirrorFS) | ||
| mustWriteFile("tufRepo.tar", tufRepo) | ||
| mustWriteFile("root.json", rootJSON) | ||
| } | ||
|
|
||
| func mustWriteFile(path string, data []byte) { | ||
| err := os.WriteFile(filepath.Join(*dir, path), data, 0600) | ||
| if err != nil { | ||
| log.Fatalf("failed to write file %s: %v", path, err) | ||
| } | ||
| } | ||
|
|
||
| func genPK() ([]byte, string) { | ||
| priv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) | ||
| if err != nil { | ||
| log.Fatalf("failed to generate ecdsa key: %v", err) | ||
| } | ||
| der, err := x509.MarshalPKIXPublicKey(priv.Public().(*ecdsa.PublicKey)) | ||
| if err != nil { | ||
| log.Fatalf("failed to marshal ecdsa key: %v", err) | ||
| } | ||
| pemPK := pem.EncodeToMemory(&pem.Block{Type: "PUBLIC KEY", Bytes: der}) | ||
|
|
||
| // generate log id | ||
| pk, err := cryptoutils.UnmarshalPEMToPublicKey(pemPK) | ||
| if err != nil { | ||
| log.Fatalf("failed to unmarshal ecdsa key: %v", err) | ||
| } | ||
| logID, err := cosign.GetTransparencyLogID(pk) | ||
| if err != nil { | ||
| log.Fatalf("failed to get transparency log id: %v", err) | ||
| } | ||
| return pemPK, logID | ||
| } | ||
|
|
||
| func genCertChain(keyUsage x509.KeyUsage) [][]byte { | ||
| // Create a new CA certificate | ||
| caPriv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) | ||
| if err != nil { | ||
| log.Fatalf("failed to generate ecdsa key: %v", err) | ||
| } | ||
| template := &x509.Certificate{ | ||
| SerialNumber: new(big.Int).SetInt64(1), | ||
| Subject: pkix.Name{CommonName: "ca"}, | ||
| NotBefore: time.Now(), | ||
| NotAfter: time.Now().AddDate(10, 0, 0), | ||
| KeyUsage: x509.KeyUsageCertSign, | ||
| BasicConstraintsValid: true, | ||
| IsCA: true, | ||
| } | ||
| caCertBytes, err := x509.CreateCertificate(rand.Reader, template, template, caPriv.Public(), caPriv) | ||
| if err != nil { | ||
| log.Fatalf("failed to create x509 certificate: %v", err) | ||
| } | ||
|
|
||
| caCert, err := x509.ParseCertificate(caCertBytes) | ||
| if err != nil { | ||
| log.Fatalf("failed to parse x509 certificate: %v", err) | ||
| } | ||
|
|
||
| // Create a new leaf certificate | ||
| leafPriv, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader) | ||
| if err != nil { | ||
| log.Fatalf("failed to generate ecdsa key: %v", err) | ||
| } | ||
| leafCert, err := x509.CreateCertificate(rand.Reader, &x509.Certificate{ | ||
| SerialNumber: new(big.Int).SetInt64(2), | ||
| Subject: pkix.Name{CommonName: "leaf"}, | ||
| NotBefore: time.Now(), | ||
| NotAfter: time.Now().AddDate(10, 0, 0), | ||
| KeyUsage: keyUsage, | ||
| }, caCert, &leafPriv.PublicKey, caPriv) | ||
| if err != nil { | ||
| log.Fatalf("failed to create x509 certificate: %v", err) | ||
| } | ||
|
|
||
| return [][]byte{pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: leafCert}), pem.EncodeToMemory(&pem.Block{Type: "CERTIFICATE", Bytes: caCertBytes})} | ||
| } | ||
|
|
||
| func genTrustRoot(sigstoreKeysMap map[string]string) (marshalledEntry []byte, err error) { | ||
| trustRoot := testing.NewTrustRoot("test-trustroot", testing.WithSigstoreKeys(sigstoreKeysMap)) | ||
| sigstoreKeys := &config.SigstoreKeys{} | ||
| sigstoreKeys.ConvertFrom(context.Background(), trustRoot.Spec.SigstoreKeys) | ||
| err = populateLogIDs(sigstoreKeys) | ||
| if err != nil { | ||
| return nil, err | ||
| } | ||
| return json.MarshalIndent(sigstoreKeys, "", " ") | ||
| } | ||
|
|
||
| func populateLogIDs(sigstoreKeys *config.SigstoreKeys) error { | ||
| for i := range sigstoreKeys.TLogs { | ||
| logID, err := genLogID(sigstoreKeys.TLogs[i].PublicKey) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| sigstoreKeys.TLogs[i].LogID = logID | ||
| } | ||
| for i := range sigstoreKeys.CTLogs { | ||
| logID, err := genLogID(sigstoreKeys.CTLogs[i].PublicKey) | ||
| if err != nil { | ||
| return err | ||
| } | ||
| sigstoreKeys.CTLogs[i].LogID = logID | ||
| } | ||
| return nil | ||
| } | ||
|
|
||
| func genLogID(pkBytes []byte) (string, error) { | ||
| pk, err := cryptoutils.UnmarshalPEMToPublicKey(pkBytes) | ||
| if err != nil { | ||
| return "", err | ||
| } | ||
| return cosign.GetTransparencyLogID(pk) | ||
| } | ||
|
|
||
| func genTUFRepo(sigstoreKeysMap map[string]string) ([]byte, []byte, []byte, error) { | ||
| files := map[string][]byte{} | ||
| files["rekor.pem"] = []byte(sigstoreKeysMap["rekor"]) | ||
| files["ctfe.pem"] = []byte(sigstoreKeysMap["ctfe"]) | ||
| files["fulcio.pem"] = []byte(sigstoreKeysMap["fulcio"]) | ||
|
|
||
| defer os.RemoveAll(path.Join(os.TempDir(), "tuf")) // TODO: Update scaffolding to use os.MkdirTemp and remove this | ||
| ctx := context.Background() | ||
| local, dir, err := repo.CreateRepo(ctx, files) | ||
| if err != nil { | ||
| return nil, nil, nil, err | ||
| } | ||
| meta, err := local.GetMeta() | ||
| if err != nil { | ||
| return nil, nil, nil, err | ||
| } | ||
| rootJSON, ok := meta["root.json"] | ||
| if !ok { | ||
| return nil, nil, nil, err | ||
| } | ||
|
|
||
| var compressed bytes.Buffer | ||
| if err := repo.CompressFS(os.DirFS(dir), &compressed, map[string]bool{"keys": true, "staged": true}); err != nil { | ||
| return nil, nil, nil, err | ||
| } | ||
|
|
||
| trustRoot := &config.SigstoreKeys{ | ||
| CertificateAuthorities: []config.CertificateAuthority{{CertChain: []byte(sigstoreKeysMap["fulcio"])}}, | ||
| TLogs: []config.TransparencyLogInstance{{PublicKey: []byte(sigstoreKeysMap["rekor"])}}, | ||
| CTLogs: []config.TransparencyLogInstance{{PublicKey: []byte(sigstoreKeysMap["ctfe"])}}, | ||
| } | ||
| err = populateLogIDs(trustRoot) | ||
| if err != nil { | ||
| return nil, nil, nil, err | ||
| } | ||
| trustRootBytes, err := json.MarshalIndent(trustRoot, "", " ") | ||
| if err != nil { | ||
| return nil, nil, nil, err | ||
| } | ||
| return trustRootBytes, compressed.Bytes(), rootJSON, nil | ||
| } |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1 @@ | ||
| 83e749763552c099b251d441566b9c12f160b24fbff28ab08d2681757d8acbde |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,4 @@ | ||
| -----BEGIN PUBLIC KEY----- | ||
| MFkwEwYHKoZIzj0CAQYIKoZIzj0DAQcDQgAEZ4cgFaCk7JtO/wxDw2E1S3U+97F0 | ||
| 2dF2fixniThvXgbxAQ+bkQ4dQUNwN46QcCzwYuJc9742Vi6LvNx7X7427A== | ||
| -----END PUBLIC KEY----- |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,33 @@ | ||
| -----BEGIN CERTIFICATE----- | ||
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| zh9S/qIuJNnKx1tA87xZcAuO5riq/kXA2fZGnnP4Vsp9VaVjK9o7+1QP2rFJ4p5r | ||
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| -----END CERTIFICATE----- |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,18 @@ | ||
| -----BEGIN CERTIFICATE----- | ||
| MIIBPjCB5KADAgECAgECMAoGCCqGSM49BAMCMA0xCzAJBgNVBAMTAmNhMB4XDTI0 | ||
| MDMyMTIxMzcwNVoXDTM0MDMyMTIxMzcwNVowDzENMAsGA1UEAxMEbGVhZjBZMBMG | ||
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| IQDqFTNB7UGQG2HCCXoGO+hHd1uCDEz2i+56JDXYSiKnOQ== | ||
| -----END CERTIFICATE----- | ||
| -----BEGIN CERTIFICATE----- | ||
| MIIBSjCB8aADAgECAgEBMAoGCCqGSM49BAMCMA0xCzAJBgNVBAMTAmNhMB4XDTI0 | ||
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| -----END CERTIFICATE----- |
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