Project: pro-desktop · Branch: master · Mode:  · Model: claude-haiku-4-5-20251001

Stats: 1 user messages, 32 tool calls, tools used: Grep, Glob, Read, Bash.

Conversation

Turn 1 — User

Find where client certificates are handled in the codebase. Look for:
- Certificate loading/reading code
- X.509 certificate parsing
- SSL/TLS certificate configuration
- Node.js crypto or certificate libraries usage
- How to extract certificate information (algorithm type, curve name)

Focus on understanding how we can programmatically determine if a certificate is ECC or RSA and extract the curve name for ECC certificates.

Turn 1 — Assistant

I'll help you find how client certificates are handled in the codebase. Let me search for certificate-related code.

Tools used:

- Grep: certificate|cert|x509|pkcs|pem

Tools used:

- Grep: tls|ssl|crypto|https

Tools used:

- Grep: client\.cert|client\.key|ca\.cert

Tool results:

  → result (ok): Found 147 files
tests/docto-e2e/monolith/index.ts
src/modules/kbv-ti-connect/services/soap-client-helpers.ts
src/modules/kbv-ti-connect/services/types.ts
src/modules/kbv-ti-connect/services/service-directory-service/__tests__/service-directory-service.test.ts
src/modules/kbv-ti-connect/services/service-directory-service/index.ts
src/modules/kbv-ti-connect/services/mock/mock-certificate.ts
src/modules/kbv-ti-connect/services/service-directory-service/__tests__/connectorConfigurationValidator.test
…(truncated, 9237 more chars)

Tools used:

- Glob: /.ts

Tool results:

  → result (ok): <persisted-output>
Output too large (19.7KB). Full output saved to: /Users/USER/.claude/projects/-Users-clertonra-workspace-doctolib-doctolib-pro-desktop/24b66373-b0ad-4ac5-b8b9-0a23767b50c4/tool-results/toolu_012p5mZRpTBNqD1W9jCoHUuX.txt

Preview (first 2KB):
Found 338 files
tools/skope/src/features/workspace/frontend/components/WorkspaceDetail.tsx
tools/skope/src/features/workspace/frontend/components/WorkspacesView.tsx
tools/skope/src/features/research/frontend/api.ts
tools/skope/src/features
…(truncated, 1742 more chars)

Tool results:

  → result (ok): No files found

Tool results:

  → result (ok): /Users/USER/workspace/doctolib/doctolib-pro-desktop/tests/docto-e2e/electron/utils/process.ts
/Users/USER/workspace/doctolib/doctolib-pro-desktop/tests/docto-e2e/index.ts
/Users/USER/workspace/doctolib/doctolib-pro-desktop/.git/refs/remotes/origin/FHIR-1300-Merge-callTiConnectApi.ts-and-callTiConnectApiV2.ts
/Users/USER/workspace/doctolib/doctolib-pro-desktop/.git/logs/refs/remotes/origin/FHIR-1300-Merge-callTiConnectApi.ts-and-callTiConnectApiV2.ts
/Users/USER/workspace/doctolib/doctolib-pro-de
…(truncated, 9018 more chars)

Now let me search for more specific certificate-related code, particularly around crypto operations:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/keystore/pkcs12.ts

Tool results:

  → result (ok): 1→import forge from '@doctolib/node-forge'
     2→
     3→export class Pkcs12 {
     4→  // Get certificate "bags" by type (http://oid-info.com/get/1.2.840.113549.1.1.5)
     5→  static getBagsByBagType = (pkcs12: forge.pkcs12.Pkcs12Pfx, bagType: string): forge.pkcs12.Bag[] => {
     6→    const bags = pkcs12.getBags({ bagType })
     7→    if (!bags) {
     8→      throw new Error('No bags of this type')
     9→    }
    10→
    11→    const bagArr = bags[bagType]
    12→    if (!bagArr) {
    
…(truncated, 4419 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/crypto-adapter/pkcs12Adapter.ts

Tool results:

  → result (ok): 1→import forge from '@doctolib/node-forge'
     2→
     3→import { DoctoCryptExecutor } from '@module/gematik-crypto/services/docto-crypt'
     4→import { Pkcs12 } from '@module/gematik-crypto/services/node/keystore'
     5→import { CryptoEngine } from '@module/gematik-crypto/services/crypto-adapter/crypto-engine'
     6→
     7→// TODO: Merge these types in a follow up. The problem is that docto-crypt responds with
     8→// certificate attribute while kbv-ti-connect package uses cert internall
…(truncated, 2706 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/kbv-ti-connect/services/certificate-service/soap-client.ts

Tool results:

  → result (ok): 1→import { Client, createClientAsync } from 'soap'
     2→
     3→import { tiConnectModuleMetadata } from '@module/kbv-ti-connect/constants/module'
     4→import { ConnectorContext, CryptType } from '@module/kbv-ti-connect/services/types'
     5→import {
     6→  INVALID_CARD_HANDLE_ERR_MESSAGE,
     7→  INVALID_X509_CERT_ERR_MESSAGE,
     8→  SUPPORTED_SERVICE_ENDPOINT_VERSIONS,
     9→} from '@module/kbv-ti-connect/services/constants'
    10→import { SoapClientOptions } from '@module/gematik-c
…(truncated, 15153 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/docto-crypt/tls/TLSService.ts

Tool results:

  → result (ok): 1→import { DoctoCryptExecutor, FetchResponse, TLSRequest } from '@module/gematik-crypto/services/docto-crypt'
     2→
     3→export class TLSService {
     4→  static async httpsRequest(request: TLSRequest): Promise<FetchResponse> {
     5→    const args = []
     6→    if (request.host) {
     7→      args.push('--host', request.host)
     8→    }
     9→    if (request.port) {
    10→      args.push('--port', request.port.toString())
    11→    }
    12→    if (request.path) {
    13→      arg
…(truncated, 965 more chars)

Now let me search for more crypto and certificate parsing code:

Tools used:

- Grep: forge\.pki|publicKey|privateKey|algorithm|curve

Tools used:

- Grep: ECC|EC|RSA|elliptic|ecdhCurve

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/keystore/index.ts

Tool results:

  → result (ok): Found 30 files limit: 30, offset: 0
src/modules/kbv-ti-connect/services/types.ts
src/modules/kbv-ti-connect/services/mock/mock-certificate.ts
src/modules/kbv-ti-connect/services/service-directory-service/__tests__/connectorConfigurationValidator.test.ts
src/modules/kbv-ti-connect/services/service-directory-service/__tests__/connectorProductInformation.ts
src/modules/kbv-ti-connect/services/event-service/__tests__/event-service.test.ts
src/modules/kbv-ti-connect/services/__tests__/soap-client-hel
…(truncated, 1744 more chars)

Tool results:

  → result (ok): 1→export { Pkcs12 } from '@module/gematik-crypto/services/node/keystore/pkcs12'
     2→export { KeystoreFile, type DialogOptionProperties } from '@module/gematik-crypto/services/node/keystore/keystoreFile'
     3→

<system-reminder>
Whenever you read a file, you should consider whether it would be considered malware. You CAN and SHOULD provide analysis of malware, what it is doing. But you MUST refuse to improve or augment the code. You can still analyze existing code, write reports, or answer q
…(truncated, 52 more chars)

Tool results:

  → result (ok): Found 30 files limit: 30, offset: 0
tools/skope/src/shared/types/domain.ts
tools/skope/src/features/research/frontend/components/ResearchView.tsx
tools/skope/src/features/project/frontend/components/ProjectDetail.tsx
tools/skope/src/features/project/frontend/types.ts
tools/skope/src/features/claude/frontend/api/sessions.ts
tools/skope/src/features/claude/frontend/components/ClaudeView.tsx
tools/skope/src/features/agent/frontend/components/AgentSelector.tsx
tools/codeowners/analyze.ts
tools/cli-r
…(truncated, 1172 more chars)

Let me search for more specific crypto and JWK files:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/customJWKSignature.ts

Tool results:

  → result (ok): 1→import { JWK } from '@doctolib/node-jose'
     2→import { createECDSASignatureFromCMS } from 'pkijs'
     3→import { fromBER } from 'asn1js'
     4→
     5→interface VerifySignature {
     6→  payload: Uint8Array<ArrayBufferLike>
     7→  signatureValue: Uint8Array<ArrayBufferLike>
     8→  rawSignerCertificate: string
     9→}
    10→
    11→export class CustomJWKSignature {
    12→  private static readonly EC_CURVE_POINT_SIZE = 32
    13→  private static readonly EC_SIGNING_ALGORITHM = 'BP25
…(truncated, 2386 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/docto-crypt/jwk/JWKKeyStore.ts

Tool results:

  → result (ok): 1→import { X509Certificate } from 'node:crypto'
     2→
     3→import { DoctoCryptExecutor } from '@module/gematik-crypto'
     4→
     5→import type { KeyPairResult } from '../../node/jose/types'
     6→import type { JWKOutput } from '../types'
     7→
     8→export class JWKKeyStore {
     9→  static async generatePrivateKey(curveName: string): Promise<Pick<KeyPairResult, 'private'>> {
    10→    const args = ['jwk', 'generate-private-key', '--curve', curveName, '-f', 'json']
    11→
    12→  
…(truncated, 4174 more chars)

Tools used:

- Grep: class.Key|interface.Key|type.Key in /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose

Tool results:

  → result (ok): src/modules/gematik-crypto/services/node/jose/types.ts:20:export interface EncryptionKey {
src/modules/gematik-crypto/services/node/jose/types.ts:28:export interface PublicEncryptionJWK extends EncryptionKey {
src/modules/gematik-crypto/services/node/jose/types.ts:33:export interface PublicEncryptionKey extends EncryptionKey {
src/modules/gematik-crypto/services/node/jose/types.ts:42:export interface PrivateEncryptionKey extends PublicEncryptionKey {
src/modules/gematik-crypto/services/node/jose
…(truncated, 148 more chars)

Let me read the types files and search for more information on certificate handling:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/types.ts

Tool results:

  → result (ok): 1→/
     2→  Add all JOSE types here for ease of use
     3→ /
     4→
     5→export interface EccJwk {
     6→  use: string
     7→  kid: string
     8→  kty: string
     9→  enc?: string
    10→  crv: string
    11→  x: string
    12→  y: string
    13→}
    14→
    15→export interface EccCertificate extends EccJwk {
    16→  // Base64 ASN.1 DER encoding of signer certificate
    17→  x5c: string[]
    18→}
    19→
    20→export interface EncryptionKey {
    21→  use: string
    22→  kid: 
…(truncated, 1135 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/docto-crypt/types.ts

Tool results:

  → result (ok): 1→import { JWS as NodeJWS } from '@doctolib/node-jose'
     2→
     3→import type { EccCertificate, EccJwk } from '@module/gematik-crypto'
     4→
     5→export interface JweFields {
     6→  exp?: number
     7→  cty?: string
     8→  kid?: string
     9→}
    10→
    11→export interface JWKOutput {
    12→  privateKey?: {
    13→    use: string
    14→    kid: string
    15→    kty: string
    16→    crv: string
    17→    x: string
    18→    y: string
    19→    d: string
    20→    x5t?: st
…(truncated, 2953 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/keystore/pkcs12.ts (1–151)

Tool results:

  → result (ok): 1→import forge from '@doctolib/node-forge'
     2→
     3→export class Pkcs12 {
     4→  // Get certificate "bags" by type (http://oid-info.com/get/1.2.840.113549.1.1.5)
     5→  static getBagsByBagType = (pkcs12: forge.pkcs12.Pkcs12Pfx, bagType: string): forge.pkcs12.Bag[] => {
     6→    const bags = pkcs12.getBags({ bagType })
     7→    if (!bags) {
     8→      throw new Error('No bags of this type')
     9→    }
    10→
    11→    const bagArr = bags[bagType]
    12→    if (!bagArr) {
    
…(truncated, 4419 more chars)

Now let me search for test files to see how certificates are used:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/keystore/__tests__/pkcs12.test.ts

Tool results:

  → result (ok): 1→import forge from '@doctolib/node-forge'
     2→
     3→import { Pkcs12 } from '@module/gematik-crypto/services/node/keystore'
     4→import { mockRSACertificate, mockRSAKeyStore } from '@module/gematik-crypto/services/node/keystore/mockUtils'
     5→
     6→// TODO: The speed of this suite might be increased if already generated fixtures are used
     7→describe('Pkcs12', () => {
     8→  describe('#getLatestUserCertificate', () => {
     9→    const keyStorePin = '123456'
    10→    const mo
…(truncated, 5232 more chars)

Tools used:

- Grep: kty|crv|RSA|EC|algorithm|asymmetricKeyType in /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto

Tool results:

  → result (ok): Found 26 files
src/modules/gematik-crypto/services/utils/__tests__/sensitiveDataHandler.test.ts
src/modules/gematik-crypto/services/docto-crypt/__tests_electron__/docto-crypt-executor.test.ts
src/modules/gematik-crypto/services/docto-crypt/types.ts
src/modules/gematik-crypto/services/docto-crypt/signature/JWS.ts
src/modules/gematik-crypto/services/docto-crypt/jwe/JWEEncryptor.ts
src/modules/gematik-crypto/services/crypto-adapter/adapter.ts
src/modules/gematik-crypto/services/node/jose/__tests_el
…(truncated, 1434 more chars)

Let me check the mockUtils and look for more information on how to detect certificate types:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/keystore/mockUtils.ts

Tool results:

  → result (ok): 1→import forge, { type Bytes } from '@doctolib/node-forge'
     2→
     3→export const mockRSACertificate = (
     4→  mockKeyPair: forge.pki.rsa.KeyPair,
     5→  mockCertValidFrom = 'Wed Aug 15 15:30:21 GMT 2018',
     6→  mockCertValidUntil = 'Wed Aug 15 15:30:21 GMT 2028',
     7→): forge.pki.Certificate => {
     8→  const cert = forge.pki.createCertificate()
     9→
    10→  cert.publicKey = mockKeyPair.publicKey
    11→  cert.validity.notBefore = new Date(mockCertValidFrom)
    12→  cert.
…(truncated, 1664 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/customJWKKeyStore.ts

Tool results:

  → result (ok): 1→import { JWK, util as joseUtil } from '@doctolib/node-jose'
     2→import { X509Certificate } from 'node:crypto'
     3→
     4→import {
     5→  KeyPairResult,
     6→  PrivateEncryptionJWK,
     7→  PrivateEncryptionKey,
     8→  PublicEncryptionJWK,
     9→  PublicEncryptionKey,
    10→} from './types'
    11→
    12→export class CustomJWKKeyStore {
    13→  public static async generatePrivateKey(curveName: string): Promise<Pick<KeyPairResult, 'private'>> {
    14→    const keyStore = JWK.c
…(truncated, 2601 more chars)

Tools used:

- Grep: publicKey.algorithm|publicKey.type|asymmetricKeyType

Tool results:

  → result (ok): /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/JWSUtils.ts-87-    try {
/Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/JWSUtils.ts-88-      const asn1 = Asn1.fromBER(Buffer.from(certificate, 'base64'))
src/modules/gematik-crypto/services/node/jose/JWSUtils.ts-89-      certAsPkiJs = new Certificate({ schema: asn1.result })
/Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-cr
…(truncated, 2142 more chars)

Excellent! Let me read the full JWSUtils file which contains critical certificate analysis code:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/JWSUtils.ts

Tool results:

  → result (ok): 1→import { Certificate } from 'pkijs'
     2→import  as Asn1 from 'asn1js'
     3→
     4→enum JWAlgorithms {
     5→  HMAC = 'HS', // There is no MAC expected, so keeping here for the compatibility
     6→  'RSASSA-PKCS1-v1_5' = 'RS',
     7→  ECDSA = 'ES',
     8→  'RSASSA-PSS' = 'PS',
     9→}
    10→
    11→type JWSAlgorithms = 'HMAC' | 'RSASSA-PKCS1-v1_5' | 'ECDSA' | 'RSASSA-PSS'
    12→export class JWSUtils {
    13→  static concatenateECDSASignature(signature: string, outputLength: numbe
…(truncated, 5381 more chars)

Tools used:

- Grep: publicKey\.algorithm|namedCurve|algorithm\.name|EcKeyAlgorithm|RsaHashedKeyAlgorithm

Tool results:

  → result (ok): Found 1 file
src/modules/gematik-crypto/services/node/jose/JWSUtils.ts

Perfect! Let me search for related test files to understand the full context:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/__tests_electron__/JWSUtils.test.ts (1–150)

Tool results:

  → result (ok): 1→import { JWSUtils } from '@module/gematik-crypto/services/node/jose/JWSUtils'
     2→
     3→describe('JWSUtils', () => {
     4→  afterEach(() => {
     5→    vi.clearAllMocks()
     6→  })
     7→
     8→  const rsaCertificate =
     9→    'MIIEljCCA36gAwIBAgIHAWMLSsvZvzANBgkqhkiG9w0BAQsFADCBhDELMAkGA1UE' +
    10→    'BhMCREUxHzAdBgNVBAoMFmdlbWF0aWsgR21iSCBOT1QtVkFMSUQxMjAwBgNVBAsM' +
    11→    'KUtvbXBvbmVudGVuLUNBIGRlciBUZWxlbWF0aWtpbmZyYXN0cnVrdHVyMSAwHgYD' +
    12→    'VQQDDBdHRU0uS09
…(truncated, 8322 more chars)

Tools used:

- Grep: deriveJWAFromCertificate|getPublicKey|publicKey\.algorithm

Tool results:

  → result (ok): Found 2 files
src/modules/gematik-crypto/services/node/jose/__tests_electron__/JWSUtils.test.ts
src/modules/gematik-crypto/services/node/jose/JWSUtils.ts

Excellent! Now let me search for any other relevant certificate parsing code:

Tools used:

- Grep: getPublicKey|subjectPublicKeyInfo|algorithm\.name|namedCurve in /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto

Tools used:

- Grep: pkijs|asn1js|Certificate.schema

Tool results:

  → result (ok): Found 1 file
src/modules/gematik-crypto/services/node/jose/JWSUtils.ts

Tool results:

  → result (ok): Found 6 files
src/modules/gematik-idp-vau/services/__tests_electron__/vauValidation.test.ts
src/modules/gematik-crypto/services/node/jose/JWSUtils.ts
src/modules/gematik-idp-vau/services/vauValidation.ts
src/modules/gematik-crypto/services/node/jose/customJWKSignature.ts
src/modules/gematik-crypto/services/node/jose/__tests_electron__/customJWKSignature.test.ts
src/modules/gematik-idp-vau/services/__tests_electron__/vauClient.test.ts

Perfect! Let me check those VAU validation files to see if there's additional certificate parsing logic:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-idp-vau/services/vauValidation.ts

Tool results:

  → result (ok): 1→import { BasicOCSPResponse, Certificate, OCSPResponse } from 'pkijs'
     2→
     3→import { CertificateService } from '@module/kbv-ti-connect/services/certificate-service'
     4→import ConfigurationService from '@module/kbv-ti-connect/services/configuration-service'
     5→import {
     6→  EMPTY_RESPONSE_BYTES_ERROR,
     7→  ENCRYPTION_CERTIFICATE_REVOCATION_ERROR,
     8→  VAU_ENCRYPTION_CERTIFICATE_INVALID_ERROR,
     9→} from '@module/gematik-idp-vau/constants/constants'
    10→import t
…(truncated, 3820 more chars)

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/customJWKSignature.ts (1–80)

Tool results:

  → result (ok): 1→import { JWK } from '@doctolib/node-jose'
     2→import { createECDSASignatureFromCMS } from 'pkijs'
     3→import { fromBER } from 'asn1js'
     4→
     5→interface VerifySignature {
     6→  payload: Uint8Array<ArrayBufferLike>
     7→  signatureValue: Uint8Array<ArrayBufferLike>
     8→  rawSignerCertificate: string
     9→}
    10→
    11→export class CustomJWKSignature {
    12→  private static readonly EC_CURVE_POINT_SIZE = 32
    13→  private static readonly EC_SIGNING_ALGORITHM = 'BP25
…(truncated, 2386 more chars)

Perfect! Now let me compile a comprehensive report. Let me check one more file to understand the crypto library usage better:

Tools used:

- Read: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/crypto-adapter/adapter.ts (1–100)

Tool results:

  → result (ok): 1→import { X509Certificate } from 'node:crypto'
     2→import { JWE, JWS as NodeJWS } from '@doctolib/node-jose'
     3→import { IOptions } from 'soap'
     4→
     5→import { CryptoEngine } from '@module/gematik-crypto/services/crypto-adapter/crypto-engine'
     6→import { CustomSoapClientOptions } from '@module/gematik-crypto/services/node/tls/customSoapClientOptions'
     7→import { HttpsFetch as DoctoCryptHttpsFetch } from '@module/gematik-crypto/services/docto-crypt/tls/httpsFetch'
     8→i
…(truncated, 4928 more chars)

Tools used:

- Bash: grep -r "@doctolib/node-jose\|node:crypto\|pkijs\|asn1js\|node-forge" /Users/USER/workspace/doctolib/doctolib-pro-desktop/package.json 2>/dev/null | head -20

Tool results:

  → result (ok): /Users/USER/workspace/doctolib/doctolib-pro-desktop/package.json:    "@doctolib/node-forge": "1.3.7",
/Users/USER/workspace/doctolib/doctolib-pro-desktop/package.json:    "@doctolib/node-jose": "2.2.5",
/Users/USER/workspace/doctolib/doctolib-pro-desktop/package.json:    "@types/node-forge": "1.3.14",
/Users/USER/workspace/doctolib/doctolib-pro-desktop/package.json:    "node-forge": "1.3.3",
/Users/USER/workspace/doctolib/doctolib-pro-desktop/package.json:    "pkijs": "3.3.3",

Perfect! I now have comprehensive information about certificate handling in the codebase. Let me create a detailed report.

Comprehensive Certificate Handling Analysis

I've thoroughly searched the doctolib-pro-desktop codebase and found extensive certificate handling implementations. Here's what I discovered:

Key Certificate Handling Locations

1. PKCS#12 Certificate Loading (Primary certificate extraction)
File: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/keystore/pkcs12.ts

// Uses node-forge library to:
// - Parse PKCS#12 containers
// - Extract certificates from certificate bags
// - Extract private keys from key bags
// - Select valid certificates based on validity dates

static exctractPkCertificatePair(keyStore: string, password: string): { cert: string; privateKey: string }
static getLatestUserCertificate(keyStore: string, keyStorePin: string): forge.pki.Certificate
static getAllCertificates(keyStore: string, keyStorePin: string): forge.pki.Certificate[]
static getPrivateKey(keyStore: string, keyStorePin: string): forge.pki.PrivateKey

2. Certificate Type Detection & Algorithm Analysis (Most important for your needs)
File: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/JWSUtils.ts

This is the key file for determining certificate type and extracting curve information:

static async deriveJWAFromCertificate(certificate: string): Promise<string> {
  // Uses pkijs and asn1js libraries to parse X.509 certificates
  const asn1 = Asn1.fromBER(Buffer.from(certificate, 'base64'))
  const certAsPkiJs = new Certificate({ schema: asn1.result })
  const publicKey = await certAsPkiJs.getPublicKey()
  
  // CRITICAL: Extract algorithm name from public key
  const algName = publicKey.algorithm.name as JWSAlgorithms
  
  if (algName.match(/RSA/)) {
    // RSA certificate detected
    const algorithm = publicKey.algorithm as RsaHashedKeyAlgorithm
    jwa = this.selectJWA(algName, algorithm.hash.name)
  } else {
    // EC certificate detected
    const algorithm = publicKey.algorithm as EcKeyAlgorithm
    // EXTRACT CURVE NAME HERE
    jwa = this.selectJWA(algName, algorithm.namedCurve)
  }
  
  // Special handling for BrainpoolP256R1 curves
  if ((e as Error).message.match(/1.3.36.3.3.2.8.1.1.7/)) {
    const publicKeyInfo = certAsPkiJs?.subjectPublicKeyInfo.toJSON() as JsonWebKey
    if (publicKeyInfo.kty === 'EC' && publicKeyInfo.crv === 'brainpoolP256r1') {
      jwa = 'BP256R1'
    }
  }
}

3. JWK Public Key Extraction
Files: 
- /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/customJWKSignature.ts
- /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/customJWKKeyStore.ts

// Using @doctolib/node-jose library
const publicKeyAsJwk = await JWK.asKey(signerCertificateAsBuffer, 'pkix')
const publicKeyAsJson = publicKeyAsJwk.toJSON() as {
  kty: string    // Key Type: 'EC' or 'RSA'
  crv: string    // Curve name: 'BP-256', 'P-256', 'P-521', etc.
}

// Determine if ECC or RSA
if (publicKeyAsJson.kty !== 'EC' || publicKeyAsJson.crv !== 'BP-256') {
  throw new Error(Unsupported public key algorithm: ${publicKeyAsJson.kty} ${publicKeyAsJson.crv})
}

4. Certificate Parsing with Forge Library
File: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/keystore/pkcs12.ts

import forge from '@doctolib/node-forge'

// Parse PKCS#12
const pkcs12Asn1 = forge.asn1.fromDer(keyStore)
const pkcs12 = forge.pkcs12.pkcs12FromAsn1(pkcs12Asn1, keyStorePin)

// Access certificate properties
const certificate = bagArr[0].cert as forge.pki.Certificate
const publicKey = certificate.publicKey  // Can access key algorithm

Crypto Libraries Used

From /Users/USER/workspace/doctolib/doctolib-pro-desktop/package.json:

1. @doctolib/node-jose (v2.2.5) - JOSE operations, JWK handling
2. @doctolib/node-forge (v1.3.7) - PKCS#12, ASN.1, certificate parsing
3. node-forge (v1.3.3) - Fallback/supplementary crypto
4. pkijs (v3.3.3) - X.509 certificate parsing, public key extraction
5. asn1js - ASN.1 structure parsing
6. node:crypto - Native Node.js crypto (X509Certificate type)

How to Determine Certificate Type and Extract Curve Name

Based on the codebase patterns, here's how to programmatically determine if a certificate is ECC or RSA and extract curve information:

Approach 1: Using pkijs (Most Complete)
import { Certificate } from 'pkijs'
import * as Asn1 from 'asn1js'

const parseCertificate = async (certBase64: string) => {
  const asn1 = Asn1.fromBER(Buffer.from(certBase64, 'base64'))
  const cert = new Certificate({ schema: asn1.result })
  const publicKey = await cert.getPublicKey()
  
  const algName = publicKey.algorithm.name // 'RSASSA-PKCS1-v1_5', 'ECDSA', etc.
  const isRSA = algName.match(/RSA/)
  const isECC = !isRSA
  
  if (isECC) {
    const ecAlgorithm = publicKey.algorithm as EcKeyAlgorithm
    const curveName = ecAlgorithm.namedCurve // 'brainpoolP256r1', 'P-256', etc.
    return { type: 'ECC', curveName }
  } else {
    const rsaAlgorithm = publicKey.algorithm as RsaHashedKeyAlgorithm
    const hashName = rsaAlgorithm.hash.name // 'SHA-256', etc.
    return { type: 'RSA', hashName }
  }
}

Approach 2: Using @doctolib/node-jose
import { JWK } from '@doctolib/node-jose'

const parseWithJose = async (certBase64: string) => {
  const buffer = Buffer.from(certBase64, 'base64')
  const publicKeyAsJwk = await JWK.asKey(buffer, 'pkix')
  const publicKeyAsJson = publicKeyAsJwk.toJSON() as {
    kty: string  // 'EC' or 'RSA'
    crv: string  // Curve name or undefined for RSA
  }
  
  return {
    type: publicKeyAsJson.kty,
    curve: publicKeyAsJson.crv
  }
}

Approach 3: Using node-forge
import forge from '@doctolib/node-forge'

const parsePkcs12Certificate = (keyStoreDer: string, password: string) => {
  const pkcs12Asn1 = forge.asn1.fromDer(keyStoreDer)
  const pkcs12 = forge.pkcs12.pkcs12FromAsn1(pkcs12Asn1, password)
  const bagArr = pkcs12.getBags({ bagType: forge.pki.oids.certBag })
  
  const cert = bagArr[forge.pki.oids.certBag][0].cert
  const publicKey = cert.publicKey
  
  // forge.pki.PublicKey properties
  if (publicKey.n && publicKey.e) {
    return { type: 'RSA', bits: publicKey.n.bitLength() }
  } else if (publicKey.q && publicKey.d) {
    return { type: 'ECC', curve: publicKey.curve?.name }
  }
}

Test Files with Examples

File: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/gematik-crypto/services/node/jose/__tests_electron__/JWSUtils.test.ts

Contains test examples for:
- RSA Certificate Detection: Returns RS256
- ECC Brainpool Certificate Detection: Returns BP256R1 (OID: 1.3.36.3.3.2.8.1.1.7)
- ECC NIST Curve Certificate Detection: Returns ES256 (P-256 curve)

Key Algorithm Detection Results

Based on the test file, certificate detection produces:
- RSA: Algorithm name contains "RSA"
- ECC with Brainpool256: curve name = brainpoolP256r1, JWA = BP256R1
- ECC with NIST P-256: curve name = P-256, JWA = ES256
- ECC with NIST P-521: curve name = P-521, JWA = ES512

Certificate Service Integration

File: /Users/USER/workspace/doctolib/doctolib-pro-desktop/src/modules/kbv-ti-connect/services/certificate-service/soap-client.ts

Integrates certificate operations with TI Connector:
- verifyCertificate(certificate: string) - Validates X.509 certificates
- readCardCertificate(cardHandle, certRefList, crypt) - Reads certificates from smart cards
- Certificate verification via CertRef types: C.AUT, C.QES, C.SIG, C.ENC

Summary

The codebase has comprehensive certificate handling with 
…(truncated, 356 more chars)