feat: add certificate service and utility functions

- Implement CertificateService for end-to-end certificate management
- Add support for various certificate types (web, client, email, etc.)
- Include certificate generation, validation, and revocation
- Add utility functions for certificate operations and validation
- Implement comprehensive test coverage for certificate operations
- Support SAN (Subject Alternative Name) and IP address extensions
- Add proper error handling and validation for certificate requests
This commit is contained in:
Björn Benouarets
2025-09-30 11:45:05 +02:00
parent 5f6640d8f3
commit d9726d9204
4 changed files with 2558 additions and 0 deletions

835
certificate/certificate.go Normal file
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package certificate
import (
"crypto/x509"
"encoding/pem"
"fmt"
"net"
"net/url"
"os"
"path/filepath"
"strings"
"time"
"git.secnex.io/secnex/certman/certificate/utils"
"git.secnex.io/secnex/certman/models"
"git.secnex.io/secnex/certman/repositories"
"github.com/google/uuid"
"gorm.io/gorm"
)
// CertificateService handles certificate operations
type CertificateService struct {
certRepo *repositories.CertificateRepository
caRepo *repositories.CertificateAuthorityRepository
csrRepo *repositories.CertificateRequestRepository
certDir string
privateDir string
caService *CertificateAuthorityService
}
// NewCertificateService creates a new certificate service
func NewCertificateService(
db *gorm.DB,
certDir string,
privateDir string,
caService *CertificateAuthorityService,
) *CertificateService {
return &CertificateService{
certRepo: repositories.NewCertificateRepository(db),
caRepo: repositories.NewCertificateAuthorityRepository(db),
csrRepo: repositories.NewCertificateRequestRepository(db),
certDir: certDir,
privateDir: privateDir,
caService: caService,
}
}
// CreateCertificate creates a new certificate from a request
func (s *CertificateService) CreateCertificate(req *CreateCertificateRequest) (*models.Certificate, error) {
// Validate request
if err := s.validateCreateCertificateRequest(req); err != nil {
return nil, fmt.Errorf("invalid request: %w", err)
}
// Get CA
ca, err := s.caRepo.GetByID(req.CertificateAuthorityID.String())
if err != nil {
return nil, fmt.Errorf("CA not found: %w", err)
}
// Load CA certificate and private key
caCert, caPrivateKey, err := s.caService.loadCACertificateAndKey(&ca)
if err != nil {
return nil, fmt.Errorf("failed to load CA certificate: %w", err)
}
// Create certificate configuration (iOS-compatible by default for web certificates)
config := s.createCertificateConfig(req)
// Ensure proper certificate configuration
config.SubjectKeyID = true
config.AuthorityKeyID = true
// Validate configuration
if err := utils.ValidateCertificateConfig(config); err != nil {
return nil, fmt.Errorf("invalid certificate configuration: %w", err)
}
// Generate certificate and private key
generator := utils.NewCertificateGenerator(config)
cert, privateKey, err := generator.GenerateCertificate(caCert, caPrivateKey)
if err != nil {
return nil, fmt.Errorf("failed to generate certificate: %w", err)
}
// Save certificate and private key to files
certFileID, err := s.saveCertificate(cert, req.Type)
if err != nil {
return nil, fmt.Errorf("failed to save certificate: %w", err)
}
privateKeyFileID, err := s.savePrivateKey(privateKey, req.Type)
if err != nil {
return nil, fmt.Errorf("failed to save private key: %w", err)
}
// Create certificate model
certModel := &models.Certificate{
Name: req.Name,
Description: req.Description,
SerialNumber: cert.SerialNumber.String(),
AttributeCommonName: cert.Subject.CommonName,
AttributeSubjectAlternativeName: s.formatSANs(cert.DNSNames, cert.IPAddresses, cert.EmailAddresses, cert.URIs),
AttributeOrganization: cert.Subject.Organization[0],
AttributeOrganizationUnit: cert.Subject.OrganizationalUnit[0],
AttributeCountry: cert.Subject.Country[0],
AttributeState: cert.Subject.Province[0],
AttributeLocality: cert.Subject.Locality[0],
AttributeStreet: cert.Subject.StreetAddress[0],
AttributeEmail: req.Email,
AttributeAddress: req.Address,
AttributePostalCode: cert.Subject.PostalCode[0],
AttributeNotBefore: cert.NotBefore,
AttributeNotAfter: cert.NotAfter,
Type: req.Type,
Status: models.CertificateStatusActive,
CertificateAuthorityID: req.CertificateAuthorityID,
RequestID: req.RequestID,
FileID: certFileID,
PrivateKeyID: privateKeyFileID,
Generated: true,
GeneratedAt: &time.Time{},
}
// Set generated time
now := time.Now()
certModel.GeneratedAt = &now
// Save to database
if err := s.certRepo.Create(*certModel); err != nil {
// Clean up files if database save fails
s.cleanupFiles(certFileID, privateKeyFileID)
return nil, fmt.Errorf("failed to save certificate to database: %w", err)
}
return certModel, nil
}
// CreateCertificateFromCSR creates a certificate from a Certificate Signing Request
func (s *CertificateService) CreateCertificateFromCSR(req *CreateCertificateFromCSRRequest) (*models.Certificate, error) {
// Validate request
if err := s.validateCreateCertificateFromCSRRequest(req); err != nil {
return nil, fmt.Errorf("invalid request: %w", err)
}
// Get CSR
csr, err := s.csrRepo.GetByID(req.CSRID.String())
if err != nil {
return nil, fmt.Errorf("CSR not found: %w", err)
}
// Get CA
ca, err := s.caRepo.GetByID(req.CertificateAuthorityID.String())
if err != nil {
return nil, fmt.Errorf("CA not found: %w", err)
}
// Load CA certificate and private key
caCert, caPrivateKey, err := s.caService.loadCACertificateAndKey(&ca)
if err != nil {
return nil, fmt.Errorf("failed to load CA certificate: %w", err)
}
// Parse CSR
csrParsed, err := x509.ParseCertificateRequest(csr.CSRData)
if err != nil {
return nil, fmt.Errorf("failed to parse CSR: %w", err)
}
// Create certificate configuration from CSR
config := s.createCertificateConfigFromCSR(req, csrParsed)
// Validate configuration
if err := utils.ValidateCertificateConfig(config); err != nil {
return nil, fmt.Errorf("invalid certificate configuration: %w", err)
}
// Generate certificate
generator := utils.NewCertificateGenerator(config)
cert, privateKey, err := generator.GenerateCertificate(caCert, caPrivateKey)
if err != nil {
return nil, fmt.Errorf("failed to generate certificate: %w", err)
}
// Save certificate and private key to files
certFileID, err := s.saveCertificate(cert, req.Type)
if err != nil {
return nil, fmt.Errorf("failed to save certificate: %w", err)
}
privateKeyFileID, err := s.savePrivateKey(privateKey, req.Type)
if err != nil {
return nil, fmt.Errorf("failed to save private key: %w", err)
}
// Create certificate model
certModel := &models.Certificate{
Name: req.Name,
Description: req.Description,
SerialNumber: cert.SerialNumber.String(),
AttributeCommonName: cert.Subject.CommonName,
AttributeSubjectAlternativeName: s.formatSANs(cert.DNSNames, cert.IPAddresses, cert.EmailAddresses, cert.URIs),
AttributeOrganization: cert.Subject.Organization[0],
AttributeOrganizationUnit: cert.Subject.OrganizationalUnit[0],
AttributeCountry: cert.Subject.Country[0],
AttributeState: cert.Subject.Province[0],
AttributeLocality: cert.Subject.Locality[0],
AttributeStreet: cert.Subject.StreetAddress[0],
AttributeEmail: "",
AttributeAddress: "",
AttributePostalCode: cert.Subject.PostalCode[0],
AttributeNotBefore: cert.NotBefore,
AttributeNotAfter: cert.NotAfter,
Type: req.Type,
Status: models.CertificateStatusActive,
CertificateAuthorityID: req.CertificateAuthorityID,
RequestID: &req.CSRID,
FileID: certFileID,
PrivateKeyID: privateKeyFileID,
Generated: true,
GeneratedAt: &time.Time{},
}
// Set generated time
now := time.Now()
certModel.GeneratedAt = &now
// Save to database
if err := s.certRepo.Create(*certModel); err != nil {
// Clean up files if database save fails
s.cleanupFiles(certFileID, privateKeyFileID)
return nil, fmt.Errorf("failed to save certificate to database: %w", err)
}
return certModel, nil
}
// GetCertificate retrieves a certificate by ID
func (s *CertificateService) GetCertificate(id string) (*models.Certificate, error) {
cert, err := s.certRepo.GetByID(id)
if err != nil {
return nil, fmt.Errorf("certificate not found: %w", err)
}
return &cert, nil
}
// GetAllCertificates retrieves all certificates
func (s *CertificateService) GetAllCertificates() ([]models.Certificate, error) {
certs, err := s.certRepo.GetAll()
if err != nil {
return nil, fmt.Errorf("failed to retrieve certificates: %w", err)
}
return certs, nil
}
// GetCertificatesByType retrieves certificates by type
func (s *CertificateService) GetCertificatesByType(certType models.CertificateType) ([]models.Certificate, error) {
certs, err := s.certRepo.GetAll()
if err != nil {
return nil, fmt.Errorf("failed to retrieve certificates: %w", err)
}
var filteredCerts []models.Certificate
for _, cert := range certs {
if cert.Type == certType {
filteredCerts = append(filteredCerts, cert)
}
}
return filteredCerts, nil
}
// GetCertificatesByCA retrieves certificates issued by a specific CA
func (s *CertificateService) GetCertificatesByCA(caID string) ([]models.Certificate, error) {
certs, err := s.certRepo.GetAll()
if err != nil {
return nil, fmt.Errorf("failed to retrieve certificates: %w", err)
}
var filteredCerts []models.Certificate
for _, cert := range certs {
if cert.CertificateAuthorityID.String() == caID {
filteredCerts = append(filteredCerts, cert)
}
}
return filteredCerts, nil
}
// GetCertificateFile retrieves the certificate file
func (s *CertificateService) GetCertificateFile(certID string) (*x509.Certificate, error) {
cert, err := s.certRepo.GetByID(certID)
if err != nil {
return nil, fmt.Errorf("certificate not found: %w", err)
}
certPath := filepath.Join(s.certDir, fmt.Sprintf("%s.crt", cert.FileID))
certPEM, err := os.ReadFile(certPath)
if err != nil {
return nil, fmt.Errorf("failed to read certificate file: %w", err)
}
block, _ := pem.Decode(certPEM)
if block == nil {
return nil, fmt.Errorf("failed to decode certificate PEM")
}
certParsed, err := x509.ParseCertificate(block.Bytes)
if err != nil {
return nil, fmt.Errorf("failed to parse certificate: %w", err)
}
return certParsed, nil
}
// GetPrivateKeyFile retrieves the private key file
func (s *CertificateService) GetPrivateKeyFile(certID string) (interface{}, error) {
cert, err := s.certRepo.GetByID(certID)
if err != nil {
return nil, fmt.Errorf("certificate not found: %w", err)
}
keyPath := filepath.Join(s.privateDir, fmt.Sprintf("%s.key", cert.PrivateKeyID))
keyPEM, err := os.ReadFile(keyPath)
if err != nil {
return nil, fmt.Errorf("failed to read private key file: %w", err)
}
block, _ := pem.Decode(keyPEM)
if block == nil {
return nil, fmt.Errorf("failed to decode private key PEM")
}
var privateKey interface{}
switch block.Type {
case "RSA PRIVATE KEY":
privateKey, err = x509.ParsePKCS1PrivateKey(block.Bytes)
case "EC PRIVATE KEY":
privateKey, err = x509.ParseECPrivateKey(block.Bytes)
default:
return nil, fmt.Errorf("unsupported private key type: %s", block.Type)
}
if err != nil {
return nil, fmt.Errorf("failed to parse private key: %w", err)
}
return privateKey, nil
}
// UpdateCertificate updates a certificate
func (s *CertificateService) UpdateCertificate(cert *models.Certificate) error {
return s.certRepo.Update(*cert)
}
// RevokeCertificate revokes a certificate
func (s *CertificateService) RevokeCertificate(certID string, reason string) error {
cert, err := s.certRepo.GetByID(certID)
if err != nil {
return fmt.Errorf("certificate not found: %w", err)
}
// Update certificate with revocation information
cert.Status = models.CertificateStatusRevoked
cert.RevocationReason = reason
now := time.Now()
cert.RevokedAt = &now
if err := s.certRepo.Update(cert); err != nil {
return fmt.Errorf("failed to revoke certificate: %w", err)
}
return nil
}
// DeleteCertificate deletes a certificate
func (s *CertificateService) DeleteCertificate(certID string) error {
cert, err := s.certRepo.GetByID(certID)
if err != nil {
return fmt.Errorf("certificate not found: %w", err)
}
// Delete from database
if err := s.certRepo.Delete(certID); err != nil {
return fmt.Errorf("failed to delete certificate from database: %w", err)
}
// Clean up files
s.cleanupFiles(cert.FileID, cert.PrivateKeyID)
return nil
}
// ValidateCertificate validates a certificate
func (s *CertificateService) ValidateCertificate(certID string) error {
cert, err := s.certRepo.GetByID(certID)
if err != nil {
return fmt.Errorf("certificate not found: %w", err)
}
// Load certificate
certParsed, err := s.GetCertificateFile(certID)
if err != nil {
return fmt.Errorf("failed to load certificate: %w", err)
}
// Check validity period
now := time.Now()
if now.Before(certParsed.NotBefore) {
return fmt.Errorf("certificate is not yet valid")
}
if now.After(certParsed.NotAfter) {
return fmt.Errorf("certificate has expired")
}
// Check status
if cert.Status == models.CertificateStatusRevoked {
return fmt.Errorf("certificate has been revoked: %s", cert.RevocationReason)
}
return nil
}
// ExportCertificate exports a certificate in various formats
func (s *CertificateService) ExportCertificate(certID string, format string) ([]byte, error) {
certParsed, err := s.GetCertificateFile(certID)
if err != nil {
return nil, fmt.Errorf("failed to load certificate: %w", err)
}
exporter := utils.NewCertificateExporter()
switch format {
case "pem":
return exporter.ExportCertificateToPEM(certParsed)
case "der":
return exporter.ExportCertificateToDER(certParsed), nil
default:
return nil, fmt.Errorf("unsupported export format: %s", format)
}
}
// ExportPrivateKey exports a private key in various formats
func (s *CertificateService) ExportPrivateKey(certID string, format string) ([]byte, error) {
privateKey, err := s.GetPrivateKeyFile(certID)
if err != nil {
return nil, fmt.Errorf("failed to load private key: %w", err)
}
exporter := utils.NewCertificateExporter()
switch format {
case "pem":
return exporter.ExportPrivateKeyToPEM(privateKey)
case "der":
return exporter.ExportPrivateKeyToDER(privateKey)
default:
return nil, fmt.Errorf("unsupported export format: %s", format)
}
}
// Helper methods
// createCertificateConfig creates a certificate configuration from a request
func (s *CertificateService) createCertificateConfig(req *CreateCertificateRequest) *utils.CertificateConfig {
config := utils.DefaultCertificateConfig(req.Type)
// Set basic information
config.CommonName = req.CommonName
config.Organization = req.Organization
config.OrganizationalUnit = req.OrganizationalUnit
config.Country = req.Country
config.State = req.State
config.Locality = req.Locality
config.Street = req.Street
config.PostalCode = req.PostalCode
config.Email = req.Email
// Set validity period
if req.NotBefore != nil {
config.NotBefore = *req.NotBefore
}
if req.NotAfter != nil {
config.NotAfter = *req.NotAfter
}
if req.ValidityYears > 0 {
config.ValidityYears = req.ValidityYears
config.NotAfter = config.NotBefore.AddDate(req.ValidityYears, 0, 0)
}
// Set SANs
config.DNSNames = req.DNSNames
config.IPAddresses = req.IPAddresses
config.EmailAddresses = req.EmailAddresses
config.URIs = req.URIs
// Set key configuration
if req.KeyType != "" {
config.KeyType = utils.KeyType(req.KeyType)
}
if req.KeySize != 0 {
config.KeySize = utils.KeySize(req.KeySize)
}
if req.Curve != "" {
config.Curve = utils.Curve(req.Curve)
}
// Set custom key usage and extended key usage
if req.KeyUsage != nil {
config.DigitalSignature = req.KeyUsage.DigitalSignature
config.ContentCommitment = req.KeyUsage.ContentCommitment
config.KeyEncipherment = req.KeyUsage.KeyEncipherment
config.DataEncipherment = req.KeyUsage.DataEncipherment
config.KeyAgreement = req.KeyUsage.KeyAgreement
config.KeyCertSign = req.KeyUsage.KeyCertSign
config.CRLSign = req.KeyUsage.CRLSign
config.EncipherOnly = req.KeyUsage.EncipherOnly
config.DecipherOnly = req.KeyUsage.DecipherOnly
}
if req.ExtendedKeyUsage != nil {
config.ServerAuth = req.ExtendedKeyUsage.ServerAuth
config.ClientAuth = req.ExtendedKeyUsage.ClientAuth
config.CodeSigning = req.ExtendedKeyUsage.CodeSigning
config.EmailProtection = req.ExtendedKeyUsage.EmailProtection
config.TimeStamping = req.ExtendedKeyUsage.TimeStamping
config.OCSPSigning = req.ExtendedKeyUsage.OCSPSigning
}
return config
}
// createCertificateConfigFromCSR creates a certificate configuration from a CSR
func (s *CertificateService) createCertificateConfigFromCSR(req *CreateCertificateFromCSRRequest, csr *x509.CertificateRequest) *utils.CertificateConfig {
config := utils.DefaultCertificateConfig(req.Type)
// Set basic information from CSR
config.CommonName = csr.Subject.CommonName
if len(csr.Subject.Organization) > 0 {
config.Organization = csr.Subject.Organization[0]
}
if len(csr.Subject.OrganizationalUnit) > 0 {
config.OrganizationalUnit = csr.Subject.OrganizationalUnit[0]
}
if len(csr.Subject.Country) > 0 {
config.Country = csr.Subject.Country[0]
}
if len(csr.Subject.Province) > 0 {
config.State = csr.Subject.Province[0]
}
if len(csr.Subject.Locality) > 0 {
config.Locality = csr.Subject.Locality[0]
}
if len(csr.Subject.StreetAddress) > 0 {
config.Street = csr.Subject.StreetAddress[0]
}
if len(csr.Subject.PostalCode) > 0 {
config.PostalCode = csr.Subject.PostalCode[0]
}
// Set validity period
if req.NotBefore != nil {
config.NotBefore = *req.NotBefore
}
if req.NotAfter != nil {
config.NotAfter = *req.NotAfter
}
if req.ValidityYears > 0 {
config.ValidityYears = req.ValidityYears
config.NotAfter = config.NotBefore.AddDate(req.ValidityYears, 0, 0)
}
// Set SANs from CSR
config.DNSNames = csr.DNSNames
config.IPAddresses = csr.IPAddresses
config.EmailAddresses = csr.EmailAddresses
config.URIs = s.parseURIsFromCSR(csr.URIs)
// Set key configuration
if req.KeyType != "" {
config.KeyType = utils.KeyType(req.KeyType)
}
if req.KeySize != 0 {
config.KeySize = utils.KeySize(req.KeySize)
}
if req.Curve != "" {
config.Curve = utils.Curve(req.Curve)
}
// Set custom key usage and extended key usage
if req.KeyUsage != nil {
config.DigitalSignature = req.KeyUsage.DigitalSignature
config.ContentCommitment = req.KeyUsage.ContentCommitment
config.KeyEncipherment = req.KeyUsage.KeyEncipherment
config.DataEncipherment = req.KeyUsage.DataEncipherment
config.KeyAgreement = req.KeyUsage.KeyAgreement
config.KeyCertSign = req.KeyUsage.KeyCertSign
config.CRLSign = req.KeyUsage.CRLSign
config.EncipherOnly = req.KeyUsage.EncipherOnly
config.DecipherOnly = req.KeyUsage.DecipherOnly
}
if req.ExtendedKeyUsage != nil {
config.ServerAuth = req.ExtendedKeyUsage.ServerAuth
config.ClientAuth = req.ExtendedKeyUsage.ClientAuth
config.CodeSigning = req.ExtendedKeyUsage.CodeSigning
config.EmailProtection = req.ExtendedKeyUsage.EmailProtection
config.TimeStamping = req.ExtendedKeyUsage.TimeStamping
config.OCSPSigning = req.ExtendedKeyUsage.OCSPSigning
}
return config
}
// formatSANs formats SANs for storage
func (s *CertificateService) formatSANs(dnsNames []string, ipAddresses []net.IP, emailAddresses []string, uris []*url.URL) string {
var sans []string
for _, dns := range dnsNames {
sans = append(sans, dns)
}
for _, ip := range ipAddresses {
sans = append(sans, ip.String())
}
for _, email := range emailAddresses {
sans = append(sans, email)
}
for _, uri := range uris {
sans = append(sans, uri.String())
}
return strings.Join(sans, ",")
}
// parseURIsFromCSR parses URIs from CSR
func (s *CertificateService) parseURIsFromCSR(uris []*url.URL) []string {
var uriStrings []string
for _, uri := range uris {
uriStrings = append(uriStrings, uri.String())
}
return uriStrings
}
// saveCertificate saves a certificate to a file and returns the file ID
func (s *CertificateService) saveCertificate(cert *x509.Certificate, certType models.CertificateType) (string, error) {
// Create certificate directory if it doesn't exist
if err := os.MkdirAll(s.certDir, 0755); err != nil {
return "", fmt.Errorf("failed to create certificate directory: %w", err)
}
// Generate file ID
fileID := fmt.Sprintf("%s-%s", certType, uuid.New().String())
// Export certificate to PEM
exporter := utils.NewCertificateExporter()
certPEM, err := exporter.ExportCertificateToPEM(cert)
if err != nil {
return "", fmt.Errorf("failed to export certificate to PEM: %w", err)
}
// Save to file
certPath := filepath.Join(s.certDir, fmt.Sprintf("%s.crt", fileID))
if err := os.WriteFile(certPath, certPEM, 0644); err != nil {
return "", fmt.Errorf("failed to write certificate file: %w", err)
}
return fileID, nil
}
// savePrivateKey saves a private key to a file and returns the file ID
func (s *CertificateService) savePrivateKey(privateKey interface{}, certType models.CertificateType) (string, error) {
// Create private key directory if it doesn't exist
if err := os.MkdirAll(s.privateDir, 0700); err != nil {
return "", fmt.Errorf("failed to create private key directory: %w", err)
}
// Generate file ID
fileID := fmt.Sprintf("%s-%s", certType, uuid.New().String())
// Export private key to PEM
exporter := utils.NewCertificateExporter()
keyPEM, err := exporter.ExportPrivateKeyToPEM(privateKey)
if err != nil {
return "", fmt.Errorf("failed to export private key to PEM: %w", err)
}
// Save to file
keyPath := filepath.Join(s.privateDir, fmt.Sprintf("%s.key", fileID))
if err := os.WriteFile(keyPath, keyPEM, 0600); err != nil {
return "", fmt.Errorf("failed to write private key file: %w", err)
}
return fileID, nil
}
// cleanupFiles removes certificate and private key files
func (s *CertificateService) cleanupFiles(certFileID, privateKeyFileID string) {
if certFileID != "" {
certPath := filepath.Join(s.certDir, fmt.Sprintf("%s.crt", certFileID))
os.Remove(certPath)
}
if privateKeyFileID != "" {
keyPath := filepath.Join(s.privateDir, fmt.Sprintf("%s.key", privateKeyFileID))
os.Remove(keyPath)
}
}
// validateCreateCertificateRequest validates a certificate creation request
func (s *CertificateService) validateCreateCertificateRequest(req *CreateCertificateRequest) error {
if req.Name == "" {
return fmt.Errorf("name is required")
}
if req.CommonName == "" {
return fmt.Errorf("common name is required")
}
if req.Organization == "" {
return fmt.Errorf("organization is required")
}
if req.Country == "" {
return fmt.Errorf("country is required")
}
if req.CertificateAuthorityID == uuid.Nil {
return fmt.Errorf("certificate authority ID is required")
}
return nil
}
// validateCreateCertificateFromCSRRequest validates a certificate creation from CSR request
func (s *CertificateService) validateCreateCertificateFromCSRRequest(req *CreateCertificateFromCSRRequest) error {
if req.Name == "" {
return fmt.Errorf("name is required")
}
if req.CSRID == uuid.Nil {
return fmt.Errorf("CSR ID is required")
}
if req.CertificateAuthorityID == uuid.Nil {
return fmt.Errorf("certificate authority ID is required")
}
return nil
}
// Request structures
// CreateCertificateRequest represents a request to create a certificate
type CreateCertificateRequest struct {
Name string
Description string
CommonName string
Organization string
OrganizationalUnit string
Country string
State string
Locality string
Street string
Address string
PostalCode string
Email string
Type models.CertificateType
CertificateAuthorityID uuid.UUID
RequestID *uuid.UUID
// Validity period
NotBefore *time.Time
NotAfter *time.Time
ValidityYears int // Custom validity period in years (overrides NotAfter if set)
// Subject Alternative Names
DNSNames []string
IPAddresses []net.IP
EmailAddresses []string
URIs []string
// Key configuration
KeyType string // "rsa" or "ecdsa"
KeySize int // RSA key size (2048, 3072, 4096)
Curve string // ECDSA curve ("P-256", "P-384", "P-521")
// Custom key usage
KeyUsage *KeyUsageConfig
// Custom extended key usage
ExtendedKeyUsage *ExtendedKeyUsageConfig
}
// CreateCertificateFromCSRRequest represents a request to create a certificate from a CSR
type CreateCertificateFromCSRRequest struct {
Name string
Description string
Type models.CertificateType
CSRID uuid.UUID
CertificateAuthorityID uuid.UUID
// Validity period
NotBefore *time.Time
NotAfter *time.Time
ValidityYears int // Custom validity period in years (overrides NotAfter if set)
// Key configuration
KeyType string // "rsa" or "ecdsa"
KeySize int // RSA key size (2048, 3072, 4096)
Curve string // ECDSA curve ("P-256", "P-384", "P-521")
// Custom key usage
KeyUsage *KeyUsageConfig
// Custom extended key usage
ExtendedKeyUsage *ExtendedKeyUsageConfig
}
// KeyUsageConfig represents key usage configuration
type KeyUsageConfig struct {
DigitalSignature bool
ContentCommitment bool
KeyEncipherment bool
DataEncipherment bool
KeyAgreement bool
KeyCertSign bool
CRLSign bool
EncipherOnly bool
DecipherOnly bool
}
// ExtendedKeyUsageConfig represents extended key usage configuration
type ExtendedKeyUsageConfig struct {
ServerAuth bool
ClientAuth bool
CodeSigning bool
EmailProtection bool
TimeStamping bool
OCSPSigning bool
}

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package certificate
import (
"net"
"testing"
"time"
"git.secnex.io/secnex/certman/models"
"github.com/google/uuid"
)
func TestCreateCertificateRequest(t *testing.T) {
service := &CertificateService{}
tests := []struct {
name string
req *CreateCertificateRequest
wantErr bool
}{
{
name: "valid web certificate request",
req: &CreateCertificateRequest{
Name: "Test Web Certificate",
CommonName: "example.com",
Organization: "Test Org",
Country: "DE",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: false,
},
{
name: "valid client certificate request",
req: &CreateCertificateRequest{
Name: "Test Client Certificate",
CommonName: "user@example.com",
Organization: "Test Org",
Country: "DE",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeClient,
},
wantErr: false,
},
{
name: "valid IoT certificate request",
req: &CreateCertificateRequest{
Name: "Test IoT Certificate",
CommonName: "device.example.com",
Organization: "Test Org",
Country: "DE",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeIoT,
},
wantErr: false,
},
{
name: "missing name",
req: &CreateCertificateRequest{
CommonName: "example.com",
Organization: "Test Org",
Country: "DE",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
{
name: "missing common name",
req: &CreateCertificateRequest{
Name: "Test Certificate",
Organization: "Test Org",
Country: "DE",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
{
name: "missing organization",
req: &CreateCertificateRequest{
Name: "Test Certificate",
CommonName: "example.com",
Country: "DE",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
{
name: "missing country",
req: &CreateCertificateRequest{
Name: "Test Certificate",
CommonName: "example.com",
Organization: "Test Org",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
{
name: "missing CA ID",
req: &CreateCertificateRequest{
Name: "Test Certificate",
CommonName: "example.com",
Organization: "Test Org",
Country: "DE",
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
err := service.validateCreateCertificateRequest(test.req)
if (err != nil) != test.wantErr {
t.Errorf("validateCreateCertificateRequest() error = %v, wantErr %v", err, test.wantErr)
}
})
}
}
func TestCreateCertificateFromCSRRequest(t *testing.T) {
service := &CertificateService{}
tests := []struct {
name string
req *CreateCertificateFromCSRRequest
wantErr bool
}{
{
name: "valid CSR request",
req: &CreateCertificateFromCSRRequest{
Name: "Test Certificate from CSR",
CSRID: uuid.New(),
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: false,
},
{
name: "missing name",
req: &CreateCertificateFromCSRRequest{
CSRID: uuid.New(),
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
{
name: "missing CSR ID",
req: &CreateCertificateFromCSRRequest{
Name: "Test Certificate from CSR",
CertificateAuthorityID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
{
name: "missing CA ID",
req: &CreateCertificateFromCSRRequest{
Name: "Test Certificate from CSR",
CSRID: uuid.New(),
Type: models.CertificateTypeWeb,
},
wantErr: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
err := service.validateCreateCertificateFromCSRRequest(test.req)
if (err != nil) != test.wantErr {
t.Errorf("validateCreateCertificateFromCSRRequest() error = %v, wantErr %v", err, test.wantErr)
}
})
}
}
func TestCertificateRequestStructures(t *testing.T) {
// Test CreateCertificateRequest structure
req := &CreateCertificateRequest{
Name: "Test Certificate",
Description: "Test Description",
CommonName: "test.example.com",
Organization: "Test Organization",
OrganizationalUnit: "Test Unit",
Country: "DE",
State: "Bavaria",
Locality: "Munich",
Street: "Test Street",
Address: "Test Address",
PostalCode: "80331",
Email: "test@example.com",
Type: models.CertificateTypeWeb,
CertificateAuthorityID: uuid.New(),
NotAfter: func() *time.Time { t := time.Now().AddDate(1, 0, 0); return &t }(),
DNSNames: []string{"test.example.com", "www.test.example.com"},
IPAddresses: []net.IP{net.ParseIP("192.168.1.1")},
EmailAddresses: []string{"test@example.com"},
URIs: []string{"https://test.example.com"},
KeyType: "rsa",
KeySize: 2048,
Curve: "P-256",
KeyUsage: &KeyUsageConfig{
DigitalSignature: true,
KeyEncipherment: true,
},
ExtendedKeyUsage: &ExtendedKeyUsageConfig{
ServerAuth: true,
},
}
if req.Name == "" {
t.Error("Certificate request name should not be empty")
}
if req.CommonName == "" {
t.Error("Certificate request common name should not be empty")
}
if req.CertificateAuthorityID == uuid.Nil {
t.Error("Certificate request CA ID should not be nil")
}
if req.Type == "" {
t.Error("Certificate request type should not be empty")
}
if len(req.DNSNames) == 0 {
t.Error("Certificate request should have DNS names")
}
if len(req.IPAddresses) == 0 {
t.Error("Certificate request should have IP addresses")
}
if req.KeyUsage == nil {
t.Error("Certificate request should have key usage")
}
if req.ExtendedKeyUsage == nil {
t.Error("Certificate request should have extended key usage")
}
}
func TestKeyUsageConfig(t *testing.T) {
keyUsage := &KeyUsageConfig{
DigitalSignature: true,
KeyEncipherment: true,
}
if !keyUsage.DigitalSignature {
t.Error("Digital signature should be enabled")
}
if !keyUsage.KeyEncipherment {
t.Error("Key encipherment should be enabled")
}
}
func TestExtendedKeyUsageConfig(t *testing.T) {
extKeyUsage := &ExtendedKeyUsageConfig{
ServerAuth: true,
ClientAuth: false,
}
if !extKeyUsage.ServerAuth {
t.Error("Server auth should be enabled")
}
if extKeyUsage.ClientAuth {
t.Error("Client auth should be disabled")
}
}
func TestCertificateServiceCreation(t *testing.T) {
// Test that we can create a service instance
service := NewCertificateService(nil, "/tmp/certs", "/tmp/private", nil)
if service == nil {
t.Error("CertificateService should not be nil")
}
if service.certDir != "/tmp/certs" {
t.Errorf("Expected certDir to be /tmp/certs, got %s", service.certDir)
}
if service.privateDir != "/tmp/private" {
t.Errorf("Expected privateDir to be /tmp/private, got %s", service.privateDir)
}
}
func TestCertificateTypes(t *testing.T) {
// Test that all certificate types are defined
certTypes := []models.CertificateType{
models.CertificateTypeWeb,
models.CertificateTypeServer,
models.CertificateTypeClient,
models.CertificateTypeUser,
models.CertificateTypeEmail,
models.CertificateTypeCode,
models.CertificateTypeCA,
models.CertificateTypeIoT,
models.CertificateTypeDevice,
models.CertificateTypeSensor,
models.CertificateTypeVPN,
models.CertificateTypeOpenVPN,
models.CertificateTypeWireGuard,
models.CertificateTypeDatabase,
models.CertificateTypeMySQL,
models.CertificateTypePostgreSQL,
models.CertificateTypeMongoDB,
models.CertificateTypeAPI,
models.CertificateTypeService,
models.CertificateTypeMicroservice,
models.CertificateTypeDocker,
models.CertificateTypeKubernetes,
models.CertificateTypeContainer,
models.CertificateTypeCloud,
models.CertificateTypeAWS,
models.CertificateTypeAzure,
models.CertificateTypeGCP,
models.CertificateTypeNetwork,
models.CertificateTypeFirewall,
models.CertificateTypeProxy,
models.CertificateTypeLoadBalancer,
models.CertificateTypeMobile,
models.CertificateTypeAndroid,
models.CertificateTypeiOS,
models.CertificateTypeApp,
models.CertificateTypeDocument,
models.CertificateTypePDF,
models.CertificateTypeOffice,
models.CertificateTypeTimestamp,
models.CertificateTypeOCSP,
models.CertificateTypeCustom,
models.CertificateTypeSpecial,
}
for _, certType := range certTypes {
if certType == "" {
t.Errorf("Certificate type should not be empty")
}
}
}
func TestCertificateTypeCategories(t *testing.T) {
// Test web certificates
webTypes := []models.CertificateType{
models.CertificateTypeWeb,
models.CertificateTypeServer,
}
for _, certType := range webTypes {
if certType == "" {
t.Errorf("Web certificate type should not be empty: %s", certType)
}
}
// Test client certificates
clientTypes := []models.CertificateType{
models.CertificateTypeClient,
models.CertificateTypeUser,
}
for _, certType := range clientTypes {
if certType == "" {
t.Errorf("Client certificate type should not be empty: %s", certType)
}
}
// Test IoT certificates
iotTypes := []models.CertificateType{
models.CertificateTypeIoT,
models.CertificateTypeDevice,
models.CertificateTypeSensor,
}
for _, certType := range iotTypes {
if certType == "" {
t.Errorf("IoT certificate type should not be empty: %s", certType)
}
}
// Test VPN certificates
vpnTypes := []models.CertificateType{
models.CertificateTypeVPN,
models.CertificateTypeOpenVPN,
models.CertificateTypeWireGuard,
}
for _, certType := range vpnTypes {
if certType == "" {
t.Errorf("VPN certificate type should not be empty: %s", certType)
}
}
// Test database certificates
dbTypes := []models.CertificateType{
models.CertificateTypeDatabase,
models.CertificateTypeMySQL,
models.CertificateTypePostgreSQL,
models.CertificateTypeMongoDB,
}
for _, certType := range dbTypes {
if certType == "" {
t.Errorf("Database certificate type should not be empty: %s", certType)
}
}
}

View File

@@ -0,0 +1,783 @@
package utils
import (
"crypto/ecdsa"
"crypto/elliptic"
"crypto/rand"
"crypto/rsa"
"crypto/sha256"
"crypto/x509"
"crypto/x509/pkix"
"encoding/asn1"
"encoding/pem"
"fmt"
"math/big"
"net"
"net/url"
"strings"
"time"
"git.secnex.io/secnex/certman/models"
)
// KeyType represents the type of cryptographic key
type KeyType string
const (
KeyTypeRSA KeyType = "rsa"
KeyTypeECDSA KeyType = "ecdsa"
)
// KeySize represents the size of RSA keys
type KeySize int
const (
KeySize2048 KeySize = 2048
KeySize3072 KeySize = 3072
KeySize4096 KeySize = 4096
)
// Curve represents ECDSA curves
type Curve string
const (
CurveP256 Curve = "P-256"
CurveP384 Curve = "P-384"
CurveP521 Curve = "P-521"
)
// CertificateConfig holds configuration for certificate generation
type CertificateConfig struct {
// Basic Information
CommonName string
Organization string
OrganizationalUnit string
Country string
State string
Locality string
Street string
PostalCode string
Email string
// Certificate Details
SerialNumber *big.Int
NotBefore time.Time
NotAfter time.Time
CertificateType models.CertificateType
// Subject Alternative Names
DNSNames []string
IPAddresses []net.IP
EmailAddresses []string
URIs []string
// Key Configuration
KeyType KeyType
KeySize KeySize // Only used for RSA
Curve Curve // Only used for ECDSA
// CA Configuration
IsCA bool
MaxPathLen int
MaxPathLenZero bool
BasicConstraintsValid bool
// Key Usage
DigitalSignature bool
ContentCommitment bool
KeyEncipherment bool
DataEncipherment bool
KeyAgreement bool
KeyCertSign bool
CRLSign bool
EncipherOnly bool
DecipherOnly bool
// Extended Key Usage
ServerAuth bool
ClientAuth bool
CodeSigning bool
EmailProtection bool
TimeStamping bool
OCSPSigning bool
// Additional Extensions
SubjectKeyID bool
AuthorityKeyID bool
CRLDistributionPoints []string
OCSPServers []string
// iOS-specific extensions
AuthorityInfoAccess []string // AIA URLs for iOS compatibility
IssuingCertificateURL string // URL to issuing certificate
// Validity period configuration
ValidityYears int // Custom validity period in years (overrides default)
// Platform compatibility
UseSHA256ForKeyIDs bool // Use SHA-256 for Key IDs (iOS compatible, MacBook compatible)
}
// DefaultCertificateConfig returns a default configuration for the given certificate type
func DefaultCertificateConfig(certType models.CertificateType) *CertificateConfig {
config := &CertificateConfig{
CommonName: "",
Organization: "",
OrganizationalUnit: "",
Country: "DE",
State: "",
Locality: "",
Street: "",
PostalCode: "",
Email: "",
SerialNumber: generateSerialNumber(),
NotBefore: time.Now(),
NotAfter: time.Now().AddDate(0, 3, 0), // 3 months default
CertificateType: certType,
DNSNames: []string{},
IPAddresses: []net.IP{},
EmailAddresses: []string{},
URIs: []string{},
KeyType: KeyTypeRSA,
KeySize: KeySize2048,
Curve: CurveP256,
IsCA: false,
MaxPathLen: -1,
MaxPathLenZero: false,
BasicConstraintsValid: true,
SubjectKeyID: true,
AuthorityKeyID: true,
CRLDistributionPoints: []string{},
OCSPServers: []string{},
// iOS-specific defaults
AuthorityInfoAccess: []string{},
IssuingCertificateURL: "",
// Validity period defaults
ValidityYears: 0, // 0 means use default
// Platform compatibility defaults
UseSHA256ForKeyIDs: true, // Use SHA-256 for modern compatibility (iOS + MacBook)
}
// Set defaults based on certificate type
switch certType {
case models.CertificateTypeCA:
config.IsCA = true
config.KeyCertSign = true
config.CRLSign = true
config.NotAfter = calculateValidityPeriod(config.NotBefore, config.ValidityYears, 10) // Default 10 years for CA
config.MaxPathLen = 0
case models.CertificateTypeWeb, models.CertificateTypeServer:
config.DigitalSignature = true
config.KeyEncipherment = true
config.ServerAuth = true
config.NotAfter = calculateValidityPeriodMonths(config.NotBefore, config.ValidityYears, 3) // Default 3 months for web/server
// Enterprise defaults: Use larger key size if not specified
if config.KeySize == KeySize2048 && config.ValidityYears > 1 {
config.KeySize = KeySize4096 // Use 4096 bit for enterprise certificates
}
// iOS-compatibility: Always ensure Common Name is in SAN
if config.CommonName != "" {
found := false
for _, dns := range config.DNSNames {
if dns == config.CommonName {
found = true
break
}
}
if !found {
config.DNSNames = append(config.DNSNames, config.CommonName)
}
}
// iOS-compatibility: Add Authority Information Access
config.AuthorityInfoAccess = []string{"http://ca.secnex.internal/ca.crt"}
config.IssuingCertificateURL = "http://ca.secnex.internal/ca.crt"
case models.CertificateTypeClient:
config.DigitalSignature = true
config.KeyEncipherment = true
config.ClientAuth = true
config.NotAfter = calculateValidityPeriod(config.NotBefore, config.ValidityYears, 1) // Default 1 year for client
case models.CertificateTypeEmail:
config.DigitalSignature = true
config.KeyEncipherment = true
config.EmailProtection = true
config.NotAfter = calculateValidityPeriod(config.NotBefore, config.ValidityYears, 1) // Default 1 year for email
case models.CertificateTypeCode:
config.DigitalSignature = true
config.CodeSigning = true
config.NotAfter = calculateValidityPeriod(config.NotBefore, config.ValidityYears, 2) // Default 2 years for code signing
}
return config
}
// CACertificateConfig returns a configuration specifically for CA certificates
func CACertificateConfig(isRoot bool) *CertificateConfig {
config := DefaultCertificateConfig(models.CertificateTypeCA)
config.IsCA = true
config.KeyCertSign = true
config.CRLSign = true
if isRoot {
config.NotAfter = calculateValidityPeriod(config.NotBefore, config.ValidityYears, 20) // Default 20 years for root CA
config.MaxPathLen = -1 // No limit for root CA
} else {
config.NotAfter = calculateValidityPeriod(config.NotBefore, config.ValidityYears, 10) // Default 10 years for intermediate CA
config.MaxPathLen = 0 // Intermediate CA cannot issue other CAs by default
}
return config
}
// CACertificateConfigWithValidity returns a CA configuration with custom validity period
func CACertificateConfigWithValidity(isRoot bool, validityYears int) *CertificateConfig {
config := CACertificateConfig(isRoot)
config.ValidityYears = validityYears
if isRoot {
config.NotAfter = calculateValidityPeriod(config.NotBefore, validityYears, 20)
} else {
config.NotAfter = calculateValidityPeriod(config.NotBefore, validityYears, 10)
}
return config
}
// WebServerCertificateConfig returns a configuration for web server certificates
func WebServerCertificateConfig(domains []string) *CertificateConfig {
config := DefaultCertificateConfig(models.CertificateTypeWeb)
config.DNSNames = domains
config.DigitalSignature = true
config.KeyEncipherment = true
config.ServerAuth = true
config.NotAfter = config.NotBefore.AddDate(0, 3, 0) // 3 months for web certificates
return config
}
// ClientCertificateConfig returns a configuration for client certificates
func ClientCertificateConfig() *CertificateConfig {
config := DefaultCertificateConfig(models.CertificateTypeClient)
config.DigitalSignature = true
config.KeyEncipherment = true
config.ClientAuth = true
return config
}
// EmailCertificateConfig returns a configuration for email certificates
func EmailCertificateConfig(email string) *CertificateConfig {
config := DefaultCertificateConfig(models.CertificateTypeEmail)
config.EmailAddresses = []string{email}
config.DigitalSignature = true
config.KeyEncipherment = true
config.EmailProtection = true
return config
}
// CodeSigningCertificateConfig returns a configuration for code signing certificates
func CodeSigningCertificateConfig() *CertificateConfig {
config := DefaultCertificateConfig(models.CertificateTypeCode)
config.DigitalSignature = true
config.CodeSigning = true
return config
}
// CertificateGenerator handles certificate generation
type CertificateGenerator struct {
config *CertificateConfig
}
// NewCertificateGenerator creates a new certificate generator
func NewCertificateGenerator(config *CertificateConfig) *CertificateGenerator {
return &CertificateGenerator{
config: config,
}
}
// GenerateKeyPair generates a key pair based on the configuration
func (cg *CertificateGenerator) GenerateKeyPair() (interface{}, error) {
switch cg.config.KeyType {
case KeyTypeRSA:
return rsa.GenerateKey(rand.Reader, int(cg.config.KeySize))
case KeyTypeECDSA:
var curve elliptic.Curve
switch cg.config.Curve {
case CurveP256:
curve = elliptic.P256()
case CurveP384:
curve = elliptic.P384()
case CurveP521:
curve = elliptic.P521()
default:
return nil, fmt.Errorf("unsupported ECDSA curve: %s", cg.config.Curve)
}
return ecdsa.GenerateKey(curve, rand.Reader)
default:
return nil, fmt.Errorf("unsupported key type: %s", cg.config.KeyType)
}
}
// GenerateSelfSignedCertificate generates a self-signed certificate
func (cg *CertificateGenerator) GenerateSelfSignedCertificate() (*x509.Certificate, interface{}, error) {
// Generate key pair
privateKey, err := cg.GenerateKeyPair()
if err != nil {
return nil, nil, fmt.Errorf("failed to generate key pair: %w", err)
}
// Create certificate template
template := cg.createCertificateTemplate()
// Generate certificate
certDER, err := x509.CreateCertificate(rand.Reader, template, template, cg.getPublicKey(privateKey), privateKey)
if err != nil {
return nil, nil, fmt.Errorf("failed to create certificate: %w", err)
}
// Parse certificate
cert, err := x509.ParseCertificate(certDER)
if err != nil {
return nil, nil, fmt.Errorf("failed to parse certificate: %w", err)
}
return cert, privateKey, nil
}
// GenerateCertificate generates a certificate signed by a CA
func (cg *CertificateGenerator) GenerateCertificate(caCert *x509.Certificate, caPrivateKey interface{}) (*x509.Certificate, interface{}, error) {
// Generate key pair
privateKey, err := cg.GenerateKeyPair()
if err != nil {
return nil, nil, fmt.Errorf("failed to generate key pair: %w", err)
}
// Create certificate template
template := cg.createCertificateTemplate()
// Generate certificate
certDER, err := x509.CreateCertificate(rand.Reader, template, caCert, cg.getPublicKey(privateKey), caPrivateKey)
if err != nil {
return nil, nil, fmt.Errorf("failed to create certificate: %w", err)
}
// Parse certificate
cert, err := x509.ParseCertificate(certDER)
if err != nil {
return nil, nil, fmt.Errorf("failed to parse certificate: %w", err)
}
return cert, privateKey, nil
}
// createCertificateTemplate creates an x509.Certificate template from the configuration
func (cg *CertificateGenerator) createCertificateTemplate() *x509.Certificate {
template := &x509.Certificate{
SerialNumber: cg.config.SerialNumber,
Subject: pkix.Name{
CommonName: cg.config.CommonName,
Organization: []string{cg.config.Organization},
OrganizationalUnit: []string{cg.config.OrganizationalUnit},
Country: []string{cg.config.Country},
Province: []string{cg.config.State},
Locality: []string{cg.config.Locality},
StreetAddress: []string{cg.config.Street},
PostalCode: []string{cg.config.PostalCode},
},
NotBefore: cg.config.NotBefore,
NotAfter: cg.config.NotAfter,
DNSNames: cg.config.DNSNames,
IPAddresses: cg.config.IPAddresses,
EmailAddresses: cg.config.EmailAddresses,
URIs: parseURIs(cg.config.URIs),
}
// Set key usage
var keyUsage x509.KeyUsage
if cg.config.DigitalSignature {
keyUsage |= x509.KeyUsageDigitalSignature
}
if cg.config.ContentCommitment {
keyUsage |= x509.KeyUsageContentCommitment
}
if cg.config.KeyEncipherment {
keyUsage |= x509.KeyUsageKeyEncipherment
}
if cg.config.DataEncipherment {
keyUsage |= x509.KeyUsageDataEncipherment
}
if cg.config.KeyAgreement {
keyUsage |= x509.KeyUsageKeyAgreement
}
if cg.config.KeyCertSign {
keyUsage |= x509.KeyUsageCertSign
}
if cg.config.CRLSign {
keyUsage |= x509.KeyUsageCRLSign
}
if cg.config.EncipherOnly {
keyUsage |= x509.KeyUsageEncipherOnly
}
if cg.config.DecipherOnly {
keyUsage |= x509.KeyUsageDecipherOnly
}
template.KeyUsage = keyUsage
// Set extended key usage
var extKeyUsage []x509.ExtKeyUsage
if cg.config.ServerAuth {
extKeyUsage = append(extKeyUsage, x509.ExtKeyUsageServerAuth)
}
if cg.config.ClientAuth {
extKeyUsage = append(extKeyUsage, x509.ExtKeyUsageClientAuth)
}
if cg.config.CodeSigning {
extKeyUsage = append(extKeyUsage, x509.ExtKeyUsageCodeSigning)
}
if cg.config.EmailProtection {
extKeyUsage = append(extKeyUsage, x509.ExtKeyUsageEmailProtection)
}
if cg.config.TimeStamping {
extKeyUsage = append(extKeyUsage, x509.ExtKeyUsageTimeStamping)
}
if cg.config.OCSPSigning {
extKeyUsage = append(extKeyUsage, x509.ExtKeyUsageOCSPSigning)
}
template.ExtKeyUsage = extKeyUsage
// Set basic constraints
if cg.config.BasicConstraintsValid {
template.BasicConstraintsValid = true
template.IsCA = cg.config.IsCA
if cg.config.IsCA {
template.MaxPathLen = cg.config.MaxPathLen
template.MaxPathLenZero = cg.config.MaxPathLenZero
}
}
// Set subject key identifier
if cg.config.SubjectKeyID {
template.SubjectKeyId = generateSubjectKeyID(cg.getPublicKey(nil))
}
// Set authority key identifier
if cg.config.AuthorityKeyID {
template.AuthorityKeyId = generateAuthorityKeyID(cg.getPublicKey(nil))
}
// Add CRL distribution points
if len(cg.config.CRLDistributionPoints) > 0 {
template.CRLDistributionPoints = cg.config.CRLDistributionPoints
}
// Add OCSP servers
if len(cg.config.OCSPServers) > 0 {
template.OCSPServer = cg.config.OCSPServers
}
// Add Authority Information Access (AIA) for iOS compatibility
if len(cg.config.AuthorityInfoAccess) > 0 {
template.IssuingCertificateURL = cg.config.AuthorityInfoAccess
}
return template
}
// getPublicKey extracts the public key from a private key
func (cg *CertificateGenerator) getPublicKey(privateKey interface{}) interface{} {
if privateKey == nil {
return nil
}
switch k := privateKey.(type) {
case *rsa.PrivateKey:
return &k.PublicKey
case *ecdsa.PrivateKey:
return &k.PublicKey
default:
return nil
}
}
// CertificateExporter handles certificate export functionality
type CertificateExporter struct{}
// NewCertificateExporter creates a new certificate exporter
func NewCertificateExporter() *CertificateExporter {
return &CertificateExporter{}
}
// ExportCertificateToPEM exports a certificate to PEM format
func (ce *CertificateExporter) ExportCertificateToPEM(cert *x509.Certificate) ([]byte, error) {
return pem.EncodeToMemory(&pem.Block{
Type: "CERTIFICATE",
Bytes: cert.Raw,
}), nil
}
// ExportPrivateKeyToPEM exports a private key to PEM format
func (ce *CertificateExporter) ExportPrivateKeyToPEM(privateKey interface{}) ([]byte, error) {
var pemType string
var keyBytes []byte
var err error
switch k := privateKey.(type) {
case *rsa.PrivateKey:
pemType = "RSA PRIVATE KEY"
keyBytes = x509.MarshalPKCS1PrivateKey(k)
case *ecdsa.PrivateKey:
pemType = "EC PRIVATE KEY"
keyBytes, err = x509.MarshalECPrivateKey(k)
if err != nil {
return nil, fmt.Errorf("failed to marshal ECDSA private key: %w", err)
}
default:
return nil, fmt.Errorf("unsupported private key type")
}
return pem.EncodeToMemory(&pem.Block{
Type: pemType,
Bytes: keyBytes,
}), nil
}
// ExportCertificateToDER exports a certificate to DER format
func (ce *CertificateExporter) ExportCertificateToDER(cert *x509.Certificate) []byte {
return cert.Raw
}
// ExportPrivateKeyToDER exports a private key to DER format
func (ce *CertificateExporter) ExportPrivateKeyToDER(privateKey interface{}) ([]byte, error) {
switch k := privateKey.(type) {
case *rsa.PrivateKey:
return x509.MarshalPKCS1PrivateKey(k), nil
case *ecdsa.PrivateKey:
return x509.MarshalECPrivateKey(k)
default:
return nil, fmt.Errorf("unsupported private key type")
}
}
// Utility functions
// calculateValidityPeriod calculates the validity period based on custom years or default
func calculateValidityPeriod(notBefore time.Time, customYears int, defaultYears int) time.Time {
if customYears > 0 {
return notBefore.AddDate(customYears, 0, 0)
}
return notBefore.AddDate(defaultYears, 0, 0)
}
// calculateValidityPeriodMonths calculates the validity period based on custom years or default months
func calculateValidityPeriodMonths(notBefore time.Time, customYears int, defaultMonths int) time.Time {
if customYears > 0 {
return notBefore.AddDate(customYears, 0, 0)
}
return notBefore.AddDate(0, defaultMonths, 0)
}
// generateSerialNumber generates a random serial number
func generateSerialNumber() *big.Int {
serial, _ := rand.Int(rand.Reader, new(big.Int).Lsh(big.NewInt(1), 128))
return serial
}
// generateSubjectKeyID generates a subject key identifier using SHA-256 (modern compatibility)
func generateSubjectKeyID(publicKey interface{}) []byte {
if publicKey == nil {
return nil
}
var publicKeyBytes []byte
var err error
switch k := publicKey.(type) {
case *rsa.PublicKey:
publicKeyBytes, err = asn1.Marshal(k)
case *ecdsa.PublicKey:
publicKeyBytes, err = asn1.Marshal(k)
default:
return nil
}
if err != nil {
return nil
}
// Use SHA-256 for modern compatibility (iOS + MacBook + modern browsers)
hash := sha256.Sum256(publicKeyBytes)
return hash[:]
}
// generateAuthorityKeyID generates an authority key identifier
func generateAuthorityKeyID(publicKey interface{}) []byte {
return generateSubjectKeyID(publicKey)
}
// parseURIs converts string URIs to *url.URL
func parseURIs(uriStrings []string) []*url.URL {
var uris []*url.URL
for _, uriStr := range uriStrings {
if uri, err := url.Parse(uriStr); err == nil {
uris = append(uris, uri)
}
}
return uris
}
// ParseSANs parses Subject Alternative Names from a string
func ParseSANs(sans string) ([]string, []net.IP, []string, []string) {
var dnsNames []string
var ipAddresses []net.IP
var emailAddresses []string
var uris []string
if sans == "" {
return dnsNames, ipAddresses, emailAddresses, uris
}
parts := strings.Split(sans, ",")
for _, part := range parts {
part = strings.TrimSpace(part)
if part == "" {
continue
}
// Check if it's an IP address
if ip := net.ParseIP(part); ip != nil {
ipAddresses = append(ipAddresses, ip)
continue
}
// Check if it's an email address
if strings.Contains(part, "@") {
emailAddresses = append(emailAddresses, part)
continue
}
// Check if it's a URI
if strings.HasPrefix(part, "http://") || strings.HasPrefix(part, "https://") {
uris = append(uris, part)
continue
}
// Default to DNS name
dnsNames = append(dnsNames, part)
}
return dnsNames, ipAddresses, emailAddresses, uris
}
// ValidateCertificateConfig validates a certificate configuration
func ValidateCertificateConfig(config *CertificateConfig) error {
if config.CommonName == "" {
return fmt.Errorf("common name is required")
}
if config.Organization == "" {
return fmt.Errorf("organization is required")
}
if config.Country == "" {
return fmt.Errorf("country is required")
}
if config.NotBefore.After(config.NotAfter) {
return fmt.Errorf("not before date must be before not after date")
}
if config.IsCA && !config.KeyCertSign {
return fmt.Errorf("CA certificates must have key cert sign usage")
}
// Modern browser and iOS validations
if config.CertificateType == models.CertificateTypeWeb {
// Ensure Common Name is in SAN (required by modern browsers and iOS)
if config.CommonName != "" {
found := false
for _, dns := range config.DNSNames {
if dns == config.CommonName {
found = true
break
}
}
if !found {
return fmt.Errorf("Common Name must be included in Subject Alternative Names for modern browser compatibility")
}
}
// Validate key size (minimum 2048 bits required)
if config.KeyType == KeyTypeRSA && config.KeySize < KeySize2048 {
return fmt.Errorf("RSA keys must be at least 2048 bits")
}
// Validate validity period (maximum 825 days, recommended 398 days)
validityDays := int(config.NotAfter.Sub(config.NotBefore).Hours() / 24)
if validityDays > 825 {
return fmt.Errorf("certificate validity period exceeds 825 days (current: %d days)", validityDays)
}
}
return nil
}
// CreateCertificateFromModel creates a certificate configuration from a model
func CreateCertificateFromModel(cert *models.Certificate) *CertificateConfig {
config := DefaultCertificateConfig(cert.Type)
config.CommonName = cert.AttributeCommonName
config.Organization = cert.AttributeOrganization
config.OrganizationalUnit = cert.AttributeOrganizationUnit
config.Country = cert.AttributeCountry
config.State = cert.AttributeState
config.Locality = cert.AttributeLocality
config.Street = cert.AttributeStreet
config.PostalCode = cert.AttributePostalCode
config.Email = cert.AttributeEmail
config.NotBefore = cert.AttributeNotBefore
config.NotAfter = cert.AttributeNotAfter
// Parse SANs
if cert.AttributeSubjectAlternativeName != "" {
dnsNames, ipAddresses, emailAddresses, uris := ParseSANs(cert.AttributeSubjectAlternativeName)
config.DNSNames = dnsNames
config.IPAddresses = ipAddresses
config.EmailAddresses = emailAddresses
config.URIs = uris
}
return config
}
// CreateCAFromModel creates a CA configuration from a model
func CreateCAFromModel(ca *models.CertificateAuthority) *CertificateConfig {
config := CACertificateConfig(ca.Root)
config.CommonName = ca.AttributeCommonName
config.Organization = ca.AttributeOrganization
config.OrganizationalUnit = ca.AttributeOrganizationUnit
config.Country = ca.AttributeCountry
config.State = ca.AttributeState
config.Locality = ca.AttributeLocality
config.Street = ca.AttributeStreet
config.PostalCode = ca.AttributePostalCode
config.Email = ca.AttributeEmail
config.NotBefore = ca.AttributeNotBefore
config.NotAfter = ca.AttributeNotAfter
return config
}

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@@ -0,0 +1,537 @@
package utils
import (
"crypto/x509"
"testing"
"time"
"git.secnex.io/secnex/certman/models"
)
func TestDefaultCertificateConfig(t *testing.T) {
tests := []struct {
certType models.CertificateType
expected bool
}{
{models.CertificateTypeCA, true},
{models.CertificateTypeWeb, true},
{models.CertificateTypeClient, true},
{models.CertificateTypeEmail, true},
{models.CertificateTypeCode, true},
{models.CertificateTypeServer, true},
}
for _, test := range tests {
config := DefaultCertificateConfig(test.certType)
if config.CertificateType != test.certType {
t.Errorf("Expected certificate type %s, got %s", test.certType, config.CertificateType)
}
if config.SerialNumber == nil {
t.Error("Serial number should not be nil")
}
if config.NotBefore.After(config.NotAfter) {
t.Error("NotBefore should be before NotAfter")
}
}
}
func TestCACertificateConfig(t *testing.T) {
// Test root CA
rootConfig := CACertificateConfig(true)
if !rootConfig.IsCA {
t.Error("Root CA should have IsCA = true")
}
if !rootConfig.KeyCertSign {
t.Error("Root CA should have KeyCertSign = true")
}
if !rootConfig.CRLSign {
t.Error("Root CA should have CRLSign = true")
}
if rootConfig.MaxPathLen != -1 {
t.Error("Root CA should have MaxPathLen = -1")
}
// Test intermediate CA
intermediateConfig := CACertificateConfig(false)
if !intermediateConfig.IsCA {
t.Error("Intermediate CA should have IsCA = true")
}
if !intermediateConfig.KeyCertSign {
t.Error("Intermediate CA should have KeyCertSign = true")
}
if !intermediateConfig.CRLSign {
t.Error("Intermediate CA should have CRLSign = true")
}
if intermediateConfig.MaxPathLen != 0 {
t.Error("Intermediate CA should have MaxPathLen = 0")
}
}
func TestWebServerCertificateConfig(t *testing.T) {
domains := []string{"example.com", "www.example.com"}
config := WebServerCertificateConfig(domains)
if config.CertificateType != models.CertificateTypeWeb {
t.Error("Should be web certificate type")
}
if !config.DigitalSignature {
t.Error("Should have digital signature")
}
if !config.KeyEncipherment {
t.Error("Should have key encipherment")
}
if !config.ServerAuth {
t.Error("Should have server auth")
}
if len(config.DNSNames) != len(domains) {
t.Error("DNS names should match input domains")
}
}
func TestClientCertificateConfig(t *testing.T) {
config := ClientCertificateConfig()
if config.CertificateType != models.CertificateTypeClient {
t.Error("Should be client certificate type")
}
if !config.DigitalSignature {
t.Error("Should have digital signature")
}
if !config.KeyEncipherment {
t.Error("Should have key encipherment")
}
if !config.ClientAuth {
t.Error("Should have client auth")
}
}
func TestEmailCertificateConfig(t *testing.T) {
email := "test@example.com"
config := EmailCertificateConfig(email)
if config.CertificateType != models.CertificateTypeEmail {
t.Error("Should be email certificate type")
}
if !config.DigitalSignature {
t.Error("Should have digital signature")
}
if !config.KeyEncipherment {
t.Error("Should have key encipherment")
}
if !config.EmailProtection {
t.Error("Should have email protection")
}
if len(config.EmailAddresses) != 1 || config.EmailAddresses[0] != email {
t.Error("Email addresses should match input")
}
}
func TestCodeSigningCertificateConfig(t *testing.T) {
config := CodeSigningCertificateConfig()
if config.CertificateType != models.CertificateTypeCode {
t.Error("Should be code signing certificate type")
}
if !config.DigitalSignature {
t.Error("Should have digital signature")
}
if !config.CodeSigning {
t.Error("Should have code signing")
}
}
func TestGenerateKeyPair(t *testing.T) {
tests := []struct {
keyType KeyType
keySize KeySize
curve Curve
}{
{KeyTypeRSA, KeySize2048, CurveP256},
{KeyTypeRSA, KeySize3072, CurveP256},
{KeyTypeRSA, KeySize4096, CurveP256},
{KeyTypeECDSA, KeySize2048, CurveP256},
{KeyTypeECDSA, KeySize2048, CurveP384},
{KeyTypeECDSA, KeySize2048, CurveP521},
}
for _, test := range tests {
config := DefaultCertificateConfig(models.CertificateTypeWeb)
config.KeyType = test.keyType
config.KeySize = test.keySize
config.Curve = test.curve
generator := NewCertificateGenerator(config)
key, err := generator.GenerateKeyPair()
if err != nil {
t.Errorf("Failed to generate key pair for %s: %v", test.keyType, err)
}
if key == nil {
t.Errorf("Generated key should not be nil for %s", test.keyType)
}
}
}
func TestGenerateSelfSignedCertificate(t *testing.T) {
config := CACertificateConfig(true)
config.CommonName = "Test Root CA"
config.Organization = "Test Org"
config.Country = "DE"
generator := NewCertificateGenerator(config)
cert, privateKey, err := generator.GenerateSelfSignedCertificate()
if err != nil {
t.Fatalf("Failed to generate self-signed certificate: %v", err)
}
if cert == nil {
t.Error("Certificate should not be nil")
}
if privateKey == nil {
t.Error("Private key should not be nil")
}
if !cert.IsCA {
t.Error("CA certificate should have IsCA = true")
}
if cert.Subject.CommonName != config.CommonName {
t.Error("Certificate subject should match configuration")
}
}
func TestGenerateCertificate(t *testing.T) {
// Generate root CA first
rootConfig := CACertificateConfig(true)
rootConfig.CommonName = "Test Root CA"
rootConfig.Organization = "Test Org"
rootConfig.Country = "DE"
rootGenerator := NewCertificateGenerator(rootConfig)
rootCert, rootPrivateKey, err := rootGenerator.GenerateSelfSignedCertificate()
if err != nil {
t.Fatalf("Failed to generate root CA: %v", err)
}
// Generate intermediate CA
intermediateConfig := CACertificateConfig(false)
intermediateConfig.CommonName = "Test Intermediate CA"
intermediateConfig.Organization = "Test Org"
intermediateConfig.Country = "DE"
intermediateGenerator := NewCertificateGenerator(intermediateConfig)
intermediateCert, intermediatePrivateKey, err := intermediateGenerator.GenerateCertificate(rootCert, rootPrivateKey)
if err != nil {
t.Fatalf("Failed to generate intermediate CA: %v", err)
}
if intermediateCert == nil {
t.Error("Intermediate certificate should not be nil")
}
if intermediatePrivateKey == nil {
t.Error("Intermediate private key should not be nil")
}
if !intermediateCert.IsCA {
t.Error("Intermediate CA certificate should have IsCA = true")
}
if intermediateCert.Issuer.CommonName != rootCert.Subject.CommonName {
t.Error("Intermediate certificate issuer should match root certificate subject")
}
// Generate end entity certificate
endConfig := WebServerCertificateConfig([]string{"example.com"})
endConfig.CommonName = "example.com"
endConfig.Organization = "Test Org"
endConfig.Country = "DE"
endGenerator := NewCertificateGenerator(endConfig)
endCert, endPrivateKey, err := endGenerator.GenerateCertificate(intermediateCert, intermediatePrivateKey)
if err != nil {
t.Fatalf("Failed to generate end entity certificate: %v", err)
}
if endCert == nil {
t.Error("End entity certificate should not be nil")
}
if endPrivateKey == nil {
t.Error("End entity private key should not be nil")
}
if endCert.IsCA {
t.Error("End entity certificate should not have IsCA = true")
}
if endCert.Issuer.CommonName != intermediateCert.Subject.CommonName {
t.Error("End entity certificate issuer should match intermediate certificate subject")
}
}
func TestValidateCertificateConfig(t *testing.T) {
tests := []struct {
name string
config *CertificateConfig
wantErr bool
}{
{
name: "valid config",
config: &CertificateConfig{
CommonName: "example.com",
Organization: "Test Org",
Country: "DE",
NotBefore: time.Now(),
NotAfter: time.Now().AddDate(1, 0, 0),
},
wantErr: false,
},
{
name: "missing common name",
config: &CertificateConfig{
Organization: "Test Org",
Country: "DE",
NotBefore: time.Now(),
NotAfter: time.Now().AddDate(1, 0, 0),
},
wantErr: true,
},
{
name: "missing organization",
config: &CertificateConfig{
CommonName: "example.com",
Country: "DE",
NotBefore: time.Now(),
NotAfter: time.Now().AddDate(1, 0, 0),
},
wantErr: true,
},
{
name: "missing country",
config: &CertificateConfig{
CommonName: "example.com",
Organization: "Test Org",
NotBefore: time.Now(),
NotAfter: time.Now().AddDate(1, 0, 0),
},
wantErr: true,
},
{
name: "invalid date range",
config: &CertificateConfig{
CommonName: "example.com",
Organization: "Test Org",
Country: "DE",
NotBefore: time.Now().AddDate(1, 0, 0),
NotAfter: time.Now(),
},
wantErr: true,
},
{
name: "CA without key cert sign",
config: &CertificateConfig{
CommonName: "example.com",
Organization: "Test Org",
Country: "DE",
NotBefore: time.Now(),
NotAfter: time.Now().AddDate(1, 0, 0),
IsCA: true,
KeyCertSign: false,
},
wantErr: true,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
err := ValidateCertificateConfig(test.config)
if (err != nil) != test.wantErr {
t.Errorf("ValidateCertificateConfig() error = %v, wantErr %v", err, test.wantErr)
}
})
}
}
func TestParseSANs(t *testing.T) {
tests := []struct {
input string
expectedDNS []string
expectedIPs int
expectedEmails []string
expectedURIs []string
}{
{
input: "example.com,www.example.com",
expectedDNS: []string{"example.com", "www.example.com"},
expectedIPs: 0,
expectedEmails: []string{},
expectedURIs: []string{},
},
{
input: "example.com,192.168.1.1,user@example.com,https://example.com",
expectedDNS: []string{"example.com"},
expectedIPs: 1,
expectedEmails: []string{"user@example.com"},
expectedURIs: []string{"https://example.com"},
},
{
input: "",
expectedDNS: []string{},
expectedIPs: 0,
expectedEmails: []string{},
expectedURIs: []string{},
},
}
for _, test := range tests {
dnsNames, ipAddresses, emailAddresses, uris := ParseSANs(test.input)
if len(dnsNames) != len(test.expectedDNS) {
t.Errorf("Expected %d DNS names, got %d", len(test.expectedDNS), len(dnsNames))
}
if len(ipAddresses) != test.expectedIPs {
t.Errorf("Expected %d IP addresses, got %d", test.expectedIPs, len(ipAddresses))
}
if len(emailAddresses) != len(test.expectedEmails) {
t.Errorf("Expected %d email addresses, got %d", len(test.expectedEmails), len(emailAddresses))
}
if len(uris) != len(test.expectedURIs) {
t.Errorf("Expected %d URIs, got %d", len(test.expectedURIs), len(uris))
}
}
}
func TestExportCertificateToPEM(t *testing.T) {
// Generate a test certificate
config := CACertificateConfig(true)
config.CommonName = "Test CA"
config.Organization = "Test Org"
config.Country = "DE"
generator := NewCertificateGenerator(config)
cert, _, err := generator.GenerateSelfSignedCertificate()
if err != nil {
t.Fatalf("Failed to generate certificate: %v", err)
}
exporter := NewCertificateExporter()
pemData, err := exporter.ExportCertificateToPEM(cert)
if err != nil {
t.Fatalf("Failed to export certificate to PEM: %v", err)
}
if len(pemData) == 0 {
t.Error("PEM data should not be empty")
}
// Verify PEM format
if !contains(pemData, []byte("-----BEGIN CERTIFICATE-----")) {
t.Error("PEM data should contain certificate header")
}
if !contains(pemData, []byte("-----END CERTIFICATE-----")) {
t.Error("PEM data should contain certificate footer")
}
}
func TestExportPrivateKeyToPEM(t *testing.T) {
// Generate a test certificate with private key
config := CACertificateConfig(true)
config.CommonName = "Test CA"
config.Organization = "Test Org"
config.Country = "DE"
generator := NewCertificateGenerator(config)
_, privateKey, err := generator.GenerateSelfSignedCertificate()
if err != nil {
t.Fatalf("Failed to generate certificate: %v", err)
}
exporter := NewCertificateExporter()
pemData, err := exporter.ExportPrivateKeyToPEM(privateKey)
if err != nil {
t.Fatalf("Failed to export private key to PEM: %v", err)
}
if len(pemData) == 0 {
t.Error("PEM data should not be empty")
}
// Verify PEM format
if !contains(pemData, []byte("-----BEGIN")) {
t.Error("PEM data should contain private key header")
}
if !contains(pemData, []byte("-----END")) {
t.Error("PEM data should contain private key footer")
}
}
func TestExportCertificateToDER(t *testing.T) {
// Generate a test certificate
config := CACertificateConfig(true)
config.CommonName = "Test CA"
config.Organization = "Test Org"
config.Country = "DE"
generator := NewCertificateGenerator(config)
cert, _, err := generator.GenerateSelfSignedCertificate()
if err != nil {
t.Fatalf("Failed to generate certificate: %v", err)
}
exporter := NewCertificateExporter()
derData := exporter.ExportCertificateToDER(cert)
if len(derData) == 0 {
t.Error("DER data should not be empty")
}
// Verify DER format by parsing it
_, err = x509.ParseCertificate(derData)
if err != nil {
t.Errorf("DER data should be valid certificate: %v", err)
}
}
func TestExportPrivateKeyToDER(t *testing.T) {
// Generate a test certificate with private key
config := CACertificateConfig(true)
config.CommonName = "Test CA"
config.Organization = "Test Org"
config.Country = "DE"
generator := NewCertificateGenerator(config)
_, privateKey, err := generator.GenerateSelfSignedCertificate()
if err != nil {
t.Fatalf("Failed to generate certificate: %v", err)
}
exporter := NewCertificateExporter()
derData, err := exporter.ExportPrivateKeyToDER(privateKey)
if err != nil {
t.Fatalf("Failed to export private key to DER: %v", err)
}
if len(derData) == 0 {
t.Error("DER data should not be empty")
}
}
// Helper function to check if a slice contains a subslice
func contains(s, subslice []byte) bool {
if len(subslice) > len(s) {
return false
}
for i := 0; i <= len(s)-len(subslice); i++ {
if bytesEqual(s[i:i+len(subslice)], subslice) {
return true
}
}
return false
}
func bytesEqual(a, b []byte) bool {
if len(a) != len(b) {
return false
}
for i := range a {
if a[i] != b[i] {
return false
}
}
return true
}