feat(M51): add SCEP server (RFC 8894) for MDM and network device enrollment

Implements Simple Certificate Enrollment Protocol with single-endpoint
operation-based dispatch (GetCACaps, GetCACert, PKIOperation), PKCS#7
SignedData CSR extraction with fallback for raw/base64 CSR, challenge
password authentication via CSR attributes, and shared internal/pkcs7
package extracted from EST handler to eliminate code duplication.

24 new tests (11 service + 13 handler) plus 5 shared pkcs7 package tests.

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
This commit is contained in:
shankar0123
2026-04-15 16:47:18 -04:00
parent 75cf8475f5
commit bcefb11e65
16 changed files with 1390 additions and 173 deletions
+10 -34
View File
@@ -18,6 +18,7 @@ import (
"time"
"github.com/shankar0123/certctl/internal/domain"
"github.com/shankar0123/certctl/internal/pkcs7"
)
// mockESTService implements ESTService for testing.
@@ -338,12 +339,12 @@ func TestESTCSRAttrs_MethodNotAllowed(t *testing.T) {
}
}
func TestBuildCertsOnlyPKCS7(t *testing.T) {
// Test with a dummy DER certificate
func TestBuildCertsOnlyPKCS7_ViaSharedPackage(t *testing.T) {
// Test with a dummy DER certificate via shared pkcs7 package
dummyCert := []byte{0x30, 0x82, 0x01, 0x00} // minimal ASN.1 SEQUENCE
result, err := buildCertsOnlyPKCS7([][]byte{dummyCert})
result, err := pkcs7.BuildCertsOnlyPKCS7([][]byte{dummyCert})
if err != nil {
t.Fatalf("buildCertsOnlyPKCS7 failed: %v", err)
t.Fatalf("BuildCertsOnlyPKCS7 failed: %v", err)
}
if len(result) == 0 {
t.Error("expected non-empty PKCS#7 output")
@@ -354,49 +355,24 @@ func TestBuildCertsOnlyPKCS7(t *testing.T) {
}
}
func TestPemToDERChain(t *testing.T) {
func TestPemToDERChain_ViaSharedPackage(t *testing.T) {
pemData := generateTestCertPEM(t)
certs, err := pemToDERChain(pemData)
certs, err := pkcs7.PEMToDERChain(pemData)
if err != nil {
t.Fatalf("pemToDERChain failed: %v", err)
t.Fatalf("PEMToDERChain failed: %v", err)
}
if len(certs) != 1 {
t.Errorf("expected 1 cert, got %d", len(certs))
}
}
func TestPemToDERChain_NoCerts(t *testing.T) {
_, err := pemToDERChain("not a PEM")
func TestPemToDERChain_NoCerts_ViaSharedPackage(t *testing.T) {
_, err := pkcs7.PEMToDERChain("not a PEM")
if err == nil {
t.Error("expected error for invalid PEM")
}
}
func TestASN1EncodeLength(t *testing.T) {
tests := []struct {
length int
expected []byte
}{
{0, []byte{0x00}},
{1, []byte{0x01}},
{127, []byte{0x7f}},
{128, []byte{0x81, 0x80}},
{256, []byte{0x82, 0x01, 0x00}},
}
for _, tt := range tests {
result := asn1EncodeLength(tt.length)
if len(result) != len(tt.expected) {
t.Errorf("asn1EncodeLength(%d): expected %d bytes, got %d", tt.length, len(tt.expected), len(result))
continue
}
for i := range result {
if result[i] != tt.expected[i] {
t.Errorf("asn1EncodeLength(%d): byte %d: expected 0x%02x, got 0x%02x", tt.length, i, tt.expected[i], result[i])
}
}
}
}
func TestESTCSRAttrs_ServiceError(t *testing.T) {
svc := &mockESTService{
CSRAttrsErr: errors.New("service error"),