/
main.go
337 lines (309 loc) · 8.87 KB
/
main.go
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// Copyright 2022 Dolthub, Inc.
//
// 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 (
"crypto/ed25519"
"crypto/rand"
"crypto/rsa"
"crypto/x509"
"crypto/x509/pkix"
"encoding/pem"
"path/filepath"
"math/big"
"net/url"
"os"
"time"
)
// Generates a 4096-bit RSA chain and an ed25519 chain.
// Each chain includes a root, an intermediate, a leaf with DNS and URI SANs.
// Root and intermediate have isCA=true and key usage CertSign.
// Leaf has isCA=false and key usage digitalSignature and extKeyUsage ServerAuth.
//
// Generates separate expired leafs for each key type.
//
// Emits private keys of the leafs. RSA keys are emitted PEM encoded PKCS1.
// ed25519 keys are emitted PEM encoded PKCS8.
//
// These certificates and private keys are used by
// tests/sql-server-cluster-tls.yaml and tests/sql-server-tls.yaml, for
// example.
//
// TODO: Further tests which should not verify? (SHA-1 signatures, expired
// roots or intermediates, wrong isCA, wrong key usage, etc.)
const RelPath = "../testdata"
func main() {
rsacerts, err := MakeRSACerts()
if err != nil {
panic(err)
}
err = WriteRSACerts(rsacerts)
if err != nil {
panic(err)
}
edcerts, err := MakeEd25519Certs()
if err != nil {
panic(err)
}
err = WriteEd25519Certs(edcerts)
if err != nil {
panic(err)
}
}
func WriteRSACerts(rsacerts TestCerts) error {
err := os.WriteFile(filepath.Join(RelPath, "rsa_root.pem"), pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: rsacerts.Root.Raw,
}), 0664)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "rsa_chain.pem"), append(pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: rsacerts.Leaf.Raw,
}), pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: rsacerts.Intermediate.Raw,
})...), 0664)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "rsa_key.pem"), pem.EncodeToMemory(&pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(rsacerts.LeafKey.(*rsa.PrivateKey)),
}), 0664)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "rsa_exp_chain.pem"), append(pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: rsacerts.ExpiredLeaf.Raw,
}), pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: rsacerts.Intermediate.Raw,
})...), 0664)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "rsa_exp_key.pem"), pem.EncodeToMemory(&pem.Block{
Type: "RSA PRIVATE KEY",
Bytes: x509.MarshalPKCS1PrivateKey(rsacerts.ExpiredLeafKey.(*rsa.PrivateKey)),
}), 0664)
if err != nil {
return err
}
return nil
}
func WriteEd25519Certs(edcerts TestCerts) error {
err := os.WriteFile(filepath.Join(RelPath, "ed25519_root.pem"), pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: edcerts.Root.Raw,
}), 0664)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "ed25519_chain.pem"), append(pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: edcerts.Leaf.Raw,
}), pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: edcerts.Intermediate.Raw,
})...), 0664)
if err != nil {
return err
}
keybytes, err := x509.MarshalPKCS8PrivateKey(edcerts.LeafKey)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "ed25519_key.pem"), pem.EncodeToMemory(&pem.Block{
Type: "PRIVATE KEY",
Bytes: keybytes,
}), 0664)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "ed25519_exp_chain.pem"), append(pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: edcerts.ExpiredLeaf.Raw,
}), pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: edcerts.Intermediate.Raw,
})...), 0664)
if err != nil {
return err
}
keybytes, err = x509.MarshalPKCS8PrivateKey(edcerts.ExpiredLeafKey)
if err != nil {
return err
}
err = os.WriteFile(filepath.Join(RelPath, "edcerts_exp_key.pem"), pem.EncodeToMemory(&pem.Block{
Type: "PRIVATE KEY",
Bytes: keybytes,
}), 0664)
if err != nil {
return err
}
return nil
}
type TestCerts struct {
Root *x509.Certificate
Intermediate *x509.Certificate
Leaf *x509.Certificate
LeafKey any
ExpiredLeaf *x509.Certificate
ExpiredLeafKey any
}
func MakeRSACerts() (TestCerts, error) {
genKey := func() (any, any, error) {
key, err := rsa.GenerateKey(rand.Reader, 4096)
if err != nil {
return nil, nil, err
}
return key.Public(), key, nil
}
return MakeCerts("RSA 4096-bit", genKey)
}
func MakeEd25519Certs() (TestCerts, error) {
genKey := func() (any, any, error) {
return ed25519.GenerateKey(rand.Reader)
}
return MakeCerts("ed25519", genKey)
}
func MakeCerts(desc string, genKey func() (any, any, error)) (TestCerts, error) {
nbf := time.Now().Add(-24 * time.Hour)
exp := nbf.Add(24 * 365 * 10 * time.Hour)
badExp := nbf.Add(12 * time.Hour)
rootpub, rootpriv, err := genKey()
if err != nil {
return TestCerts{}, err
}
intpub, intpriv, err := genKey()
if err != nil {
return TestCerts{}, err
}
leafpub, leafpriv, err := genKey()
if err != nil {
return TestCerts{}, err
}
exppub, exppriv, err := genKey()
if err != nil {
return TestCerts{}, err
}
signer, err := NewRootSigner(&x509.Certificate{
SerialNumber: big.NewInt(1),
Subject: pkix.Name{
Country: []string{"US"},
Organization: []string{"DoltHub, Inc."},
CommonName: "dolt integration tests " + desc + " Root",
},
BasicConstraintsValid: true,
IsCA: true,
KeyUsage: x509.KeyUsageCertSign,
NotBefore: nbf,
NotAfter: exp,
}, rootpub, rootpriv)
if err != nil {
return TestCerts{}, err
}
intcert, err := signer.Sign(&x509.Certificate{
SerialNumber: big.NewInt(2),
Subject: pkix.Name{
Country: []string{"US"},
Organization: []string{"DoltHub, Inc."},
CommonName: "dolt integration tests " + desc + " Intermediate",
},
BasicConstraintsValid: true,
IsCA: true,
KeyUsage: x509.KeyUsageCertSign,
NotBefore: nbf,
NotAfter: exp,
}, intpub)
if err != nil {
return TestCerts{}, err
}
intsigner := Signer{intcert, intpriv}
leafdns := "dolt-instance.dolt-integration-test.example"
leafurl, err := url.Parse("spiffe://dolt-integration-tests.dev.trust.dolthub.com.example/dolt-instance")
if err != nil {
return TestCerts{}, err
}
leafcert, err := intsigner.Sign(&x509.Certificate{
SerialNumber: big.NewInt(3),
Subject: pkix.Name{
Country: []string{"US"},
Organization: []string{"DoltHub, Inc."},
CommonName: "dolt integration tests " + desc + " Leaf",
},
BasicConstraintsValid: true,
IsCA: false,
KeyUsage: x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
NotBefore: nbf,
NotAfter: exp,
DNSNames: []string{leafdns},
URIs: []*url.URL{leafurl},
}, leafpub)
if err != nil {
return TestCerts{}, err
}
expcert, err := intsigner.Sign(&x509.Certificate{
SerialNumber: big.NewInt(4),
Subject: pkix.Name{
Country: []string{"US"},
Organization: []string{"DoltHub, Inc."},
CommonName: "dolt integration tests " + desc + " Expired Leaf",
},
BasicConstraintsValid: true,
IsCA: false,
KeyUsage: x509.KeyUsageDigitalSignature,
ExtKeyUsage: []x509.ExtKeyUsage{x509.ExtKeyUsageServerAuth},
NotBefore: nbf,
NotAfter: badExp,
DNSNames: []string{leafdns},
URIs: []*url.URL{leafurl},
}, exppub)
if err != nil {
return TestCerts{}, err
}
return TestCerts{
Root: signer.Cert,
Intermediate: intsigner.Cert,
Leaf: leafcert,
ExpiredLeaf: expcert,
LeafKey: leafpriv,
ExpiredLeafKey: exppriv,
}, nil
}
type Signer struct {
Cert *x509.Certificate
Key interface{}
}
func (s Signer) Sign(cert *x509.Certificate, pub any) (*x509.Certificate, error) {
der, err := x509.CreateCertificate(rand.Reader, cert, s.Cert, pub, s.Key)
if err != nil {
return nil, err
}
return x509.ParseCertificate(der)
}
func NewRootSigner(cert *x509.Certificate, pub, priv any) (Signer, error) {
der, err := x509.CreateCertificate(rand.Reader, cert, cert, pub, priv)
if err != nil {
return Signer{}, err
}
cert, err = x509.ParseCertificate(der)
if err != nil {
return Signer{}, err
}
return Signer{cert, priv}, nil
}