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//go:build integration
package integration
import (
"crypto"
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/x509"
"fmt"
"io/ioutil"
"net/http"
"os"
"strings"
"testing"
"time"
"github.com/eggsampler/acme/v3"
"github.com/letsencrypt/boulder/test"
ocsp_helper "github.com/letsencrypt/boulder/test/ocsp/helper"
"golang.org/x/crypto/ocsp"
)
// isPrecert returns true if the provided cert has an extension with the OID
// equal to OIDExtensionCTPoison.
func isPrecert(cert *x509.Certificate) bool {
for _, ext := range cert.Extensions {
if ext.Id.Equal(OIDExtensionCTPoison) {
return true
}
}
return false
}
// TestRevocation tests that a certificate can be revoked using all of the
// RFC 8555 revocation authentication mechanisms. It does so for both certs and
// precerts (with no corresponding final cert), and for both the Unspecified and
// keyCompromise revocation reasons.
func TestRevocation(t *testing.T) {
t.Parallel()
// This test is gated on lacking the MozRevocationReasons feature flag.
if strings.Contains(os.Getenv("BOULDER_CONFIG_DIR"), "test/config-next") {
return
}
// Create a base account to use for revocation tests.
os.Setenv("DIRECTORY", "http://boulder:4001/directory")
type authMethod string
var (
byAccount authMethod = "byAccount"
byAuth authMethod = "byAuth"
byKey authMethod = "byKey"
)
type certKind string
var (
finalcert certKind = "cert"
precert certKind = "precert"
)
type testCase struct {
method authMethod
reason int
kind certKind
expectError bool
}
var testCases []testCase
for _, kind := range []certKind{precert, finalcert} {
for _, reason := range []int{ocsp.Unspecified, ocsp.KeyCompromise} {
for _, method := range []authMethod{byAccount, byAuth, byKey} {
testCases = append(testCases, testCase{
method: method,
reason: reason,
kind: kind,
// We expect an error only for KeyCompromise requests that use auth
// methods other than using the certificate key itself.
expectError: (reason == ocsp.KeyCompromise) && (method != byKey),
})
}
}
}
for _, tc := range testCases {
name := fmt.Sprintf("%s_%d_%s", tc.kind, tc.reason, tc.method)
t.Run(name, func(t *testing.T) {
issueClient, err := makeClient()
test.AssertNotError(t, err, "creating acme client")
certKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
test.AssertNotError(t, err, "creating random cert key")
domain := random_domain()
// Try to issue a certificate for the name.
var cert *x509.Certificate
switch tc.kind {
case finalcert:
res, err := authAndIssue(issueClient, certKey, []string{domain})
test.AssertNotError(t, err, "authAndIssue failed")
cert = res.certs[0]
case precert:
// Make sure the ct-test-srv will reject generating SCTs for the domain,
// so we only get a precert and no final cert.
err := ctAddRejectHost(domain)
test.AssertNotError(t, err, "adding ct-test-srv reject host")
_, err = authAndIssue(issueClient, certKey, []string{domain})
test.AssertError(t, err, "expected error from authAndIssue, was nil")
if !strings.Contains(err.Error(), "urn:ietf:params:acme:error:serverInternal") ||
!strings.Contains(err.Error(), "SCT embedding") {
t.Fatal(err)
}
// Instead recover the precertificate from CT.
cert, err = ctFindRejection([]string{domain})
if err != nil || cert == nil {
t.Fatalf("couldn't find rejected precert for %q", domain)
}
// And make sure the cert we found is in fact a precert.
if !isPrecert(cert) {
t.Fatal("precert was missing poison extension")
}
default:
t.Fatalf("unrecognized cert kind %q", tc.kind)
}
// Initially, the cert should have a Good OCSP response.
ocspConfig := ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Good)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for precert")
// Set up the account and key that we'll use to try to revoke the cert.
var revokeClient *client
var revokeKey crypto.Signer
switch tc.method {
case byAccount:
// When revoking by account, use the same client and key as were used
// for the original issuance.
revokeClient = issueClient
revokeKey = revokeClient.PrivateKey
case byAuth:
// When revoking by auth, create a brand new client, authorize it for
// the same domain, and use that account and key for revocation. Ignore
// errors from authAndIssue because all we need is the auth, not the
// issuance.
revokeClient, err = makeClient()
test.AssertNotError(t, err, "creating second acme client")
_, _ = authAndIssue(revokeClient, certKey, []string{domain})
revokeKey = revokeClient.PrivateKey
case byKey:
// When revoking by key, create a branch new client and use it and
// the cert's key for revocation.
revokeClient, err = makeClient()
test.AssertNotError(t, err, "creating second acme client")
revokeKey = certKey
default:
t.Fatalf("unrecognized revocation method %q", tc.method)
}
// Revoke the cert using the specified key and client.
err = revokeClient.RevokeCertificate(
revokeClient.Account,
cert,
revokeKey,
tc.reason,
)
switch tc.expectError {
case false:
test.AssertNotError(t, err, "revocation should have succeeded")
// Check the OCSP response for the certificate again. It should now be
// revoked.
ocspConfig = ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Revoked)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for revoked cert")
case true:
test.AssertError(t, err, "revocation should have failed")
// Check the OCSP response for the certificate again. It should still
// be good.
ocspConfig = ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Good)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for nonrevoked cert")
}
})
}
}
// TestMozRevocation tests that a certificate can be revoked using all of the
// RFC 8555 revocation authentication mechanisms. It does so for both certs and
// precerts (with no corresponding final cert), and for both the Unspecified and
// keyCompromise revocation reasons.
func TestMozRevocation(t *testing.T) {
t.Parallel()
// This test is gated on the MozRevocationReasons feature flag.
if !strings.Contains(os.Getenv("BOULDER_CONFIG_DIR"), "test/config-next") {
return
}
// Create a base account to use for revocation tests.
os.Setenv("DIRECTORY", "http://boulder:4001/directory")
type authMethod string
var (
byAccount authMethod = "byAccount"
byAuth authMethod = "byAuth"
byKey authMethod = "byKey"
)
type certKind string
var (
finalcert certKind = "cert"
precert certKind = "precert"
)
type testCase struct {
method authMethod
reason int
kind certKind
expectError bool
}
var testCases []testCase
for _, kind := range []certKind{precert, finalcert} {
for _, reason := range []int{ocsp.Unspecified, ocsp.KeyCompromise} {
for _, method := range []authMethod{byAccount, byAuth, byKey} {
testCases = append(testCases, testCase{
method: method,
reason: reason,
kind: kind,
})
}
}
}
for _, tc := range testCases {
name := fmt.Sprintf("%s_%d_%s", tc.kind, tc.reason, tc.method)
t.Run(name, func(t *testing.T) {
issueClient, err := makeClient()
test.AssertNotError(t, err, "creating acme client")
certKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
test.AssertNotError(t, err, "creating random cert key")
domain := random_domain()
// Try to issue a certificate for the name.
var cert *x509.Certificate
switch tc.kind {
case finalcert:
res, err := authAndIssue(issueClient, certKey, []string{domain})
test.AssertNotError(t, err, "authAndIssue failed")
cert = res.certs[0]
case precert:
// Make sure the ct-test-srv will reject generating SCTs for the domain,
// so we only get a precert and no final cert.
err := ctAddRejectHost(domain)
test.AssertNotError(t, err, "adding ct-test-srv reject host")
_, err = authAndIssue(issueClient, certKey, []string{domain})
test.AssertError(t, err, "expected error from authAndIssue, was nil")
if !strings.Contains(err.Error(), "urn:ietf:params:acme:error:serverInternal") ||
!strings.Contains(err.Error(), "SCT embedding") {
t.Fatal(err)
}
// Instead recover the precertificate from CT.
cert, err = ctFindRejection([]string{domain})
if err != nil || cert == nil {
t.Fatalf("couldn't find rejected precert for %q", domain)
}
// And make sure the cert we found is in fact a precert.
if !isPrecert(cert) {
t.Fatal("precert was missing poison extension")
}
default:
t.Fatalf("unrecognized cert kind %q", tc.kind)
}
// Initially, the cert should have a Good OCSP response.
ocspConfig := ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Good)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for precert")
// Set up the account and key that we'll use to revoke the cert.
var revokeClient *client
var revokeKey crypto.Signer
switch tc.method {
case byAccount:
// When revoking by account, use the same client and key as were used
// for the original issuance.
revokeClient = issueClient
revokeKey = revokeClient.PrivateKey
case byAuth:
// When revoking by auth, create a brand new client, authorize it for
// the same domain, and use that account and key for revocation. Ignore
// errors from authAndIssue because all we need is the auth, not the
// issuance.
revokeClient, err = makeClient()
test.AssertNotError(t, err, "creating second acme client")
_, _ = authAndIssue(revokeClient, certKey, []string{domain})
revokeKey = revokeClient.PrivateKey
case byKey:
// When revoking by key, create a brand new client and use it with
// the cert's key for revocation.
revokeClient, err = makeClient()
test.AssertNotError(t, err, "creating second acme client")
revokeKey = certKey
default:
t.Fatalf("unrecognized revocation method %q", tc.method)
}
// Revoke the cert using the specified key and client.
err = revokeClient.RevokeCertificate(
revokeClient.Account,
cert,
revokeKey,
tc.reason,
)
test.AssertNotError(t, err, "revocation should have succeeded")
// Check the OCSP response for the certificate again. It should now be
// revoked.
ocspConfig = ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Revoked)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for revoked cert")
})
}
}
// TestDoubleRevocationOff verifies that a certificate cannot have its
// revocation reason updated (after the first time it has been revoked)
// for any reason.
func TestDoubleRevocationOff(t *testing.T) {
t.Parallel()
// This test is gated on lacking the AllowReRevocation feature flag.
if strings.Contains(os.Getenv("BOULDER_CONFIG_DIR"), "test/config-next") {
return
}
// Create a base account to use for revocation tests.
os.Setenv("DIRECTORY", "http://boulder:4001/directory")
client, err := makeClient()
test.AssertNotError(t, err, "creating acme client")
certKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
test.AssertNotError(t, err, "creating random cert key")
domain := random_domain()
res, err := authAndIssue(client, certKey, []string{domain})
test.AssertNotError(t, err, "authAndIssue failed")
cert := res.certs[0]
ocspConfig := ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Good)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for cert")
// Have the original subscriber revoke the cert for any reason.
err = client.RevokeCertificate(client.Account, cert, client.PrivateKey, 0)
test.AssertNotError(t, err, "revocation should have succeeded")
// Re-revoking for the same reason should fail.
err = client.RevokeCertificate(client.Account, cert, client.PrivateKey, 0)
test.AssertError(t, err, "re-revocation should have failed")
// Re-revoking for a different reason should fail.
err = client.RevokeCertificate(client.Account, cert, client.PrivateKey, 3)
test.AssertError(t, err, "re-revocation should have failed")
// Re-revoking for keyCompromise should fail.
err = client.RevokeCertificate(client.Account, cert, client.PrivateKey, 1)
test.AssertError(t, err, "re-revocation should have failed")
// Re-revoking for keyCompromise using the cert key should fail.
err = client.RevokeCertificate(client.Account, cert, certKey, 1)
test.AssertError(t, err, "re-revocation should have failed")
}
// TestDoubleRevocationOn verifies that a certificate can have its revocation
// information updated only when both of the following are true:
// a) The certificate was not initially revoked for reason keyCompromise; and
// b) The second request is authenticated using the cert's keypair.
// In which case the revocation reason (but not revocation date) will be
// updated to be keyCompromise.
func TestDoubleRevocationOn(t *testing.T) {
t.Parallel()
// This test is gated on the AllowReRevocation feature flag.
if !strings.Contains(os.Getenv("BOULDER_CONFIG_DIR"), "test/config-next") {
return
}
// Create a base account to use for revocation tests.
os.Setenv("DIRECTORY", "http://boulder:4001/directory")
type authMethod string
var (
byAccount authMethod = "byAccount"
byKey authMethod = "byKey"
)
type testCase struct {
method1 authMethod
reason1 int
method2 authMethod
reason2 int
expectError bool
}
testCases := []testCase{
{method1: byAccount, reason1: 0, method2: byAccount, reason2: 0, expectError: true},
{method1: byAccount, reason1: 1, method2: byAccount, reason2: 1, expectError: true},
{method1: byAccount, reason1: 0, method2: byKey, reason2: 1, expectError: false},
{method1: byAccount, reason1: 1, method2: byKey, reason2: 1, expectError: true},
{method1: byKey, reason1: 1, method2: byKey, reason2: 1, expectError: true},
}
for i, tc := range testCases {
t.Run(fmt.Sprintf("%d", i), func(t *testing.T) {
issueClient, err := makeClient()
test.AssertNotError(t, err, "creating acme client")
certKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
test.AssertNotError(t, err, "creating random cert key")
// Try to issue a certificate for the name.
domain := random_domain()
res, err := authAndIssue(issueClient, certKey, []string{domain})
test.AssertNotError(t, err, "authAndIssue failed")
cert := res.certs[0]
// Initially, the cert should have a Good OCSP response.
ocspConfig := ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Good)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for precert")
// Set up the account and key that we'll use to revoke the cert.
var revokeClient *client
var revokeKey crypto.Signer
switch tc.method1 {
case byAccount:
// When revoking by account, use the same client and key as were used
// for the original issuance.
revokeClient = issueClient
revokeKey = revokeClient.PrivateKey
case byKey:
// When revoking by key, create a brand new client and use it with
// the cert's key for revocation.
revokeClient, err = makeClient()
test.AssertNotError(t, err, "creating second acme client")
revokeKey = certKey
default:
t.Fatalf("unrecognized revocation method %q", tc.method1)
}
// Revoke the cert using the specified key and client.
err = revokeClient.RevokeCertificate(
revokeClient.Account,
cert,
revokeKey,
tc.reason1,
)
test.AssertNotError(t, err, "initial revocation should have succeeded")
// Check the OCSP response for the certificate again. It should now be
// revoked.
ocspConfig = ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Revoked).WithExpectReason(tc.reason1)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for revoked cert")
// Set up the account and key that we'll use to *re*-revoke the cert.
switch tc.method2 {
case byAccount:
// When revoking by account, use the same client and key as were used
// for the original issuance.
revokeClient = issueClient
revokeKey = revokeClient.PrivateKey
case byKey:
// When revoking by key, create a brand new client and use it with
// the cert's key for revocation.
revokeClient, err = makeClient()
test.AssertNotError(t, err, "creating second acme client")
revokeKey = certKey
default:
t.Fatalf("unrecognized revocation method %q", tc.method2)
}
// Re-revoke the cert using the specified key and client.
err = revokeClient.RevokeCertificate(
revokeClient.Account,
cert,
revokeKey,
tc.reason2,
)
switch tc.expectError {
case true:
test.AssertError(t, err, "second revocation should have failed")
// Check the OCSP response for the certificate again. It should still be
// revoked, with the same reason.
ocspConfig = ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Revoked).WithExpectReason(tc.reason1)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for revoked cert")
case false:
test.AssertNotError(t, err, "second revocation should have succeeded")
// Check the OCSP response for the certificate again. It should now be
// revoked with reason keyCompromise.
ocspConfig = ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Revoked).WithExpectStatus(tc.reason2)
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for revoked cert")
}
})
}
}
func TestRevokeWithKeyCompromise(t *testing.T) {
t.Parallel()
os.Setenv("DIRECTORY", "http://boulder:4001/directory")
c, err := makeClient("mailto:example@letsencrypt.org")
test.AssertNotError(t, err, "creating acme client")
certKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
test.AssertNotError(t, err, "failed to generate cert key")
res, err := authAndIssue(c, certKey, []string{random_domain()})
test.AssertNotError(t, err, "authAndIssue failed")
cert := res.certs[0]
err = c.RevokeCertificate(
acme.Account{},
cert,
certKey,
ocsp.KeyCompromise,
)
test.AssertNotError(t, err, "failed to revoke certificate")
// attempt to create a new account using the blocklisted key
_, err = c.NewAccount(certKey, false, true)
test.AssertError(t, err, "NewAccount didn't fail with a blocklisted key")
test.AssertEquals(t, err.Error(), `acme: error code 400 "urn:ietf:params:acme:error:badPublicKey": public key is forbidden`)
// Check the OCSP response. It should be revoked with reason = 1 (keyCompromise)
ocspConfig := ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Revoked)
response, err := ocsp_helper.ReqDER(cert.Raw, ocspConfig)
test.AssertNotError(t, err, "requesting OCSP for revoked cert")
test.AssertEquals(t, response.RevocationReason, 1)
}
func TestBadKeyRevoker(t *testing.T) {
t.Parallel()
os.Setenv("DIRECTORY", "http://boulder:4001/directory")
cA, err := makeClient("mailto:bad-key-revoker-revoker@letsencrypt.org", "mailto:bad-key-revoker-revoker-2@letsencrypt.org")
test.AssertNotError(t, err, "creating acme client")
cB, err := makeClient("mailto:bad-key-revoker-revoker-2@letsencrypt.org")
test.AssertNotError(t, err, "creating acme client")
cC, err := makeClient("mailto:bad-key-revoker-revokee@letsencrypt.org", "mailto:bad-key-revoker-revokee-2@letsencrypt.org")
test.AssertNotError(t, err, "creating acme client")
cD, err := makeClient("mailto:bad-key-revoker-revokee-2@letsencrypt.org", "mailto:bad-key-revoker-revokee@letsencrypt.org")
test.AssertNotError(t, err, "creating acme client")
cE, err := makeClient()
test.AssertNotError(t, err, "creating acme client")
certKey, err := ecdsa.GenerateKey(elliptic.P256(), rand.Reader)
test.AssertNotError(t, err, "failed to generate cert key")
badCert, err := authAndIssue(cA, certKey, []string{random_domain()})
test.AssertNotError(t, err, "authAndIssue failed")
certs := []*x509.Certificate{}
for _, c := range []*client{cA, cB, cC, cD, cE} {
for i := 0; i < 2; i++ {
cert, err := authAndIssue(c, certKey, []string{random_domain()})
test.AssertNotError(t, err, "authAndIssue failed")
certs = append(certs, cert.certs[0])
}
}
err = cA.RevokeCertificate(
acme.Account{},
badCert.certs[0],
certKey,
ocsp.KeyCompromise,
)
test.AssertNotError(t, err, "failed to revoke certificate")
ocspConfig := ocsp_helper.DefaultConfig.WithExpectStatus(ocsp.Revoked)
_, err = ocsp_helper.ReqDER(badCert.certs[0].Raw, ocspConfig)
test.AssertNotError(t, err, "ReqDER failed")
for _, cert := range certs {
for i := 0; i < 5; i++ {
_, err = ocsp_helper.ReqDER(cert.Raw, ocspConfig)
if err == nil {
break
}
if i == 5 {
t.Fatal("timed out waiting for revoked OCSP status")
}
time.Sleep(time.Second)
}
}
countResp, err := http.Get("http://boulder:9381/count?to=bad-key-revoker-revokee@letsencrypt.org")
test.AssertNotError(t, err, "mail-test-srv GET /count failed")
defer func() { _ = countResp.Body.Close() }()
body, err := ioutil.ReadAll(countResp.Body)
test.AssertNotError(t, err, "failed to read body")
test.AssertEquals(t, string(body), "1\n")
otherCountResp, err := http.Get("http://boulder:9381/count?to=bad-key-revoker-revokee-2@letsencrypt.org")
test.AssertNotError(t, err, "mail-test-srv GET /count failed")
defer func() { _ = otherCountResp.Body.Close() }()
body, err = ioutil.ReadAll(otherCountResp.Body)
test.AssertNotError(t, err, "failed to read body")
test.AssertEquals(t, string(body), "1\n")
zeroCountResp, err := http.Get("http://boulder:9381/count?to=bad-key-revoker-revoker@letsencrypt.org")
test.AssertNotError(t, err, "mail-test-srv GET /count failed")
defer func() { _ = zeroCountResp.Body.Close() }()
body, err = ioutil.ReadAll(zeroCountResp.Body)
test.AssertNotError(t, err, "failed to read body")
test.AssertEquals(t, string(body), "1\n")
}