Vault PKI

Vault PKI

OpenSSL это очень просто (нет)

Развертывание PKI на основе Vault

Установка Vault

Предполагается что Vault уже установлен и настроен

PKI

Включить PKI для корневого сертификата

vault secrets enable \
    -path=pki_root_ca \
    -description="PKI Root CA" \
    -max-lease-ttl="262800h" \
    pki

Создание корневого сертефиката (CA)

Конфигурация Vault

• ВАЖНО: Тип определяет будет ли показан ключ от сертификата. В случае internal ключ показа не будет и сертификат можно будет использовать только в Vault

TYPE="exported"
#TYPE="internal"

vault write -format=json pki_root_ca/root/generate/${TYPE} \
    common_name="Root Certificate Authority for Home Network" \
    country="Ukraine" \
    locality="Kharkov" \
    street_address="Lui Pastera St. 322, app. 131" \
    postal_code="61172" \
    organization="Home Network" \
    ou="IT" \
    ttl="262800h" > pki-root-ca.json

• ttl="262800h" - 30 лет
• В теории возможно использовать пре-созданный CA или даже цепочку - смотреть тут: https://groups.google.com/g/vault-tool/c/y4IcgiLBG4c

Просмотр результата

Результат работы команды (длинный вывод пропущен):

cat pki-root-ca.json
{
  "request_id": "3d05280b-25db-6834-1472-abe11fb6c4ab",
  "lease_id": "",
  "lease_duration": 0,
  "renewable": false,
  "data": {
    "certificate": "-----BEGIN CERTIFICATE-----<SKIP>F72Cwqh1wTUNHHEJKMupiTIs2B\nsjCYRMVUw1A6MBY5kS8KrTizRMIZCLKjSQoVY4F8Y7lMjnw=\n-----END CERTIFICATE-----",
    "expiration": 2579950707,
    "issuing_ca": "-----BEGIN CERTIFICATE-----<SKIP>F72Cwqh1wTUNHHEJKMupiTIs2B\nsjCYRMVUw1A6MBY5kS8KrTizRMIZCLKjSQoVY4F8Y7lMjnw=\n-----END CERTIFICATE-----",
    "private_key": "-----BEGIN RSA PRIVATE KEY-----<SKIP>hwmKMhs+HI2Hs\nflcrSqLT26ccUb5bMRtXJ1pYrnjwOJnV/4GAJ5QG4aGNGdK/jIF9XbE=\n-----END RSA PRIVATE KEY-----",
    "private_key_type": "rsa",
    "serial_number": "05:55:c5:9b:20:91:66:86:96:42:84:bd:66:9a:c1:70:28:8d:bf:82"
  },
  "warnings": null
}

Корневой сертефикат самоподписаный. Поля certificate и issuing_ca полностью совпадают.

Подготовка файлов с сертефикатом и ключем

cat pki-root-ca.json | jq -r .data.certificate > rootCA.pem

cat pki-root-ca.json | jq -r .data.issuing_ca > rootCA_issuing_ca.pem

cat pki-root-ca.json | jq -r .data.private_key > rootCA_private_key.pem

openssl  x509 -in rootCA.pem -text -noout

Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            05:55:c5:9b:20:91:66:86:96:42:84:bd:66:9a:c1:70:28:8d:bf:82
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: C = Ukraine, L = Kharkov, street = app. 131 + street = Lui Pastera St. 322, postalCode = 61172, O = Home Network, OU = IT, CN = Root Certificate Authority for Home Network
        Validity
            Not Before: Oct 10 12:58:00 2021 GMT
            Not After : Oct  3 12:58:27 2051 GMT
        Subject: C = Ukraine, L = Kharkov, street = app. 131 + street = Lui Pastera St. 322, postalCode = 61172, O = Home Network, OU = IT, CN = Root Certificate Authority for Home Network
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                RSA Public-Key: (2048 bit)
                Modulus:
                    00:be:dc:02:4a:f5:32:38:b2:cf:10:4f:78:d0:de:
                    d0:82:0e:52:2b:7f:ab:d9:ee:5c:a0:81:4a:8c:2d:
                    ae:60:ac:27:6c:12:ef:a6:6f:6f:62:23:74:d0:c2:
                    d5:b8:83:80:66:a1:50:ea:58:ea:18:b3:17:49:a6:
                    6d:83:b9:d3:0b:a5:20:c1:5c:5a:54:d6:40:56:c1:
                    c4:60:59:b9:0b:fd:de:0c:d4:0b:03:7a:93:cd:f0:
                    1f:94:25:ee:11:07:86:74:f3:e8:31:e5:66:99:4e:
                    03:a0:89:ca:3e:8b:65:73:39:d8:69:91:c0:13:ba:
                    6e:35:2a:60:e7:d9:e6:5b:53:ee:bd:12:4a:ba:1a:
                    d0:70:60:e2:65:dc:52:9d:f8:cc:0c:ec:ff:db:d5:
                    e3:12:a7:a0:91:04:a2:40:01:f3:1c:e4:5a:93:74:
                    37:16:3c:e1:bf:22:fe:0a:a1:dd:ee:cd:37:2b:6f:
                    29:47:14:b5:1b:66:57:98:b5:7e:02:b5:4b:54:ee:
                    b4:e9:93:fa:c9:ed:4e:28:cc:dc:ab:68:42:fd:f7:
                    c0:ee:89:15:2e:46:76:64:f8:ac:be:86:1d:54:4a:
                    4a:29:d5:2d:71:59:34:f8:f0:0b:e5:fc:1c:14:11:
                    d8:08:8b:79:0a:a7:8f:6b:61:30:b3:69:9a:90:12:
                    c3:29
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Key Usage: critical
                Certificate Sign, CRL Sign
            X509v3 Basic Constraints: critical
                CA:TRUE
            X509v3 Subject Key Identifier:
                DB:3A:73:7A:03:25:2E:17:48:46:58:67:19:AD:86:2E:04:3D:EB:EC
            X509v3 Authority Key Identifier:
                keyid:DB:3A:73:7A:03:25:2E:17:48:46:58:67:19:AD:86:2E:04:3D:EB:EC

    Signature Algorithm: sha256WithRSAEncryption
         71:6f:56:d4:6a:b8:24:9d:fc:16:47:8c:1c:59:ac:c2:92:90:
         36:5f:ef:73:43:c7:d7:2e:20:b4:4b:e9:3f:57:b4:a6:b4:82:
         a2:28:bd:f2:98:07:a1:49:df:c7:1d:60:5a:56:fc:85:64:e7:
         d8:97:75:f6:36:66:1a:04:ab:57:8a:43:d8:3c:aa:97:72:5e:
         3d:85:59:d9:d3:b6:2b:d5:aa:d6:49:ad:35:04:2c:22:52:9c:
         61:6a:6b:2f:dd:ba:78:cc:b7:ac:9c:fa:6d:1e:57:62:8f:b8:
         94:f9:98:30:d5:c1:06:24:c0:17:58:46:fd:6e:55:92:6f:98:
         11:d8:cd:28:6f:92:cb:90:5d:5e:91:b3:aa:bb:fd:d0:f5:32:
         9a:ed:a4:80:5a:7e:e6:6b:5d:98:19:71:04:86:de:18:e2:38:
         37:0f:e2:61:0a:d3:81:c0:06:1f:e7:f0:a0:c5:8f:f7:90:8f:
         c9:74:d5:68:1d:33:b4:a5:45:fc:f7:8c:35:a6:3a:1d:a7:6a:
         11:a5:1b:e1:7b:d8:2c:2a:87:5c:13:50:d1:c7:10:92:8c:ba:
         98:93:22:cd:81:b2:30:98:44:c5:54:c3:50:3a:30:16:39:91:
         2f:0a:ad:38:b3:44:c2:19:08:b2:a3:49:0a:15:63:81:7c:63:
         b9:4c:8e:7c

URL для корневого CA

Публикуем URL’ы для корневого центра сертификации

vault write pki_root_ca/config/urls \
  issuing_certificates="http://vault.home:8200/v1/pki_root_ca/ca" \
  crl_distribution_points="http://vault.home:8200/v1/pki_root_ca/crl

Создание промежуточного СА

В целом можно использовать и корневой СА для создания конечных сертификатов но "лучшие собаководы" рекомендуют использовать промежуточный CA

Конфигурация Vault

vault secrets enable \
    -path=pki_intermediate_ca \
    -description="PKI Intermediate CA" \
    -max-lease-ttl="175200h" \
    pki

Success! Enabled the pki secrets engine at: pki_intermediate_ca/

Генерация запроса на сертификат для промежуточного CA

vault write -format=json pki_intermediate_ca/intermediate/generate/internal \
   common_name="Intermediate CA" \
   country="Ukraine" \
   locality="Kharkov" \
   street_address="Lui Pastera st. 322 app. 131" \
   postal_code="101000" \
   organization="Horns and Hooves LLC" \
   ou="IT" \
   ttl="175200h" > pki_intermediate_ca.csr.json

Просмотр результатов

Сырой вывод

{
  "request_id": "2e544789-ed06-1d6f-97cf-928c1fb54e77",
  "lease_id": "",
  "lease_duration": 0,
  "renewable": false,
  "data": {
    "csr": "-----BEGIN CERTIFICATE REQUEST-----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\nwMjCLShOPDmOmPPUCbq/vRTUl9zMBsC7tKYRbA==\n-----END CERTIFICATE REQUEST-----"
  },
  "warnings": null
}

Сохранить запрос в файл

cat pki_intermediate_ca.csr.json | jq -r .data.csr

-----BEGIN CERTIFICATE REQUEST-----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-----END CERTIFICATE REQUEST-----

openssl req  -in pki_intermediate_ca.csr -text -noout

Certificate Request:
    Data:
        Version: 1 (0x0)
        Subject: C = Ukraine, L = Kharkov, street = Lui Pastera st. 322 app. 131, postalCode = 101000, O = Horns and Hooves LLC, OU = IT, CN = Intermediate CA
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                RSA Public-Key: (2048 bit)
                Modulus:
                    00:c8:26:59:96:45:90:57:2e:03:32:99:6b:65:50:
                    29:fd:fb:72:35:05:2d:56:f8:ac:b2:6b:64:e0:b9:
                    cf:51:6e:58:5c:ca:3c:db:d4:3b:21:b6:42:40:76:
                    88:66:dd:bc:0f:9c:40:82:3f:20:b7:01:12:8e:c8:
                    df:31:ad:ea:58:3a:5a:61:b2:7d:fe:2f:7b:69:8c:
                    e7:ef:ab:b4:d2:25:79:75:f7:88:23:91:44:46:ec:
                    08:73:d8:50:7f:a0:fa:b4:f9:df:58:2d:80:7f:4d:
                    30:a1:d8:7d:ab:fb:79:17:31:7f:81:c8:94:dc:20:
                    74:3e:d3:7f:ba:12:be:f7:f9:fd:2a:3a:66:32:cb:
                    f5:3a:d6:59:a3:60:64:13:ce:58:4b:c7:30:56:67:
                    5c:6f:2c:d2:4a:68:c1:a8:64:78:03:c8:9d:79:6c:
                    bc:82:72:e4:a9:d0:66:05:9c:18:6d:c2:f4:b7:04:
                    be:b0:be:e8:68:9f:93:41:4e:32:dd:9c:f4:73:60:
                    0f:2c:6c:fa:b4:49:5a:69:51:0c:9d:69:56:37:bd:
                    d0:46:dc:7b:28:5a:ad:9d:f6:14:2c:e9:ce:7a:53:
                    2b:29:6b:1a:6c:90:a8:e9:11:da:52:a7:ff:ff:8d:
                    f4:36:70:70:2e:a7:80:1e:40:14:1a:8a:77:be:11:
                    fc:c5
                Exponent: 65537 (0x10001)
        Attributes:
            a0:00
    Signature Algorithm: sha256WithRSAEncryption
         9a:14:97:8b:2b:ca:f4:9d:59:6a:b0:d0:3b:1e:57:a4:f4:59:
         f8:87:e3:bd:88:70:73:12:79:78:18:15:70:90:a5:8d:ca:6b:
         00:f4:af:73:a7:6d:f5:d8:bd:bc:7a:13:fd:84:38:de:de:3b:
         6d:5d:21:c5:5c:4a:11:13:5f:38:70:a3:5f:d5:6e:ae:e3:9d:
         27:95:84:de:9b:51:c7:4a:10:b0:c7:42:6e:e2:31:42:ff:e3:
         e0:5e:3e:91:99:8b:0e:25:1f:4e:c3:95:4c:6b:8e:29:5a:8f:
         27:79:f2:32:26:de:13:42:61:40:7b:b9:f2:1a:6b:02:8b:03:
         73:69:33:15:fd:f5:dc:a3:ab:40:78:69:21:35:60:18:63:ea:
         33:85:48:ff:0e:e0:84:8c:f1:2f:fa:af:3c:23:17:dd:0b:21:
         7b:99:64:1d:8d:63:4c:db:7a:cc:77:a8:7c:2d:10:44:87:68:
         d8:fd:08:b5:e6:f4:ad:1e:7d:f8:1d:41:ab:e8:c1:a0:a4:c5:
         9b:2b:f5:00:a8:9f:79:26:3a:b3:24:e9:6e:9f:eb:2b:2c:de:
         63:ca:5e:fe:dc:71:dc:93:9f:17:6f:4a:c0:c8:c2:2d:28:4e:
         3c:39:8e:98:f3:d4:09:ba:bf:bd:14:d4:97:dc:cc:06:c0:bb:
         b4:a6:11:6c

Генерация сертификата по запросу

• @pki_intermediate_ca.csr - имя файла

Создание сертефиката

vault write -format=json pki_root_ca/root/sign-intermediate csr=@pki_intermediate_ca.csr \
   country="Ukraine" \
   locality="Kharkov" \
   street_address="Lui Pastera st. 322 app. 131" \
   postal_code="61172" \
   organization="Home Network" \
   ou="IT" \
   format=pem_bundle \
   ttl="175200h" > intermediateCA.cert.pem.json

"Сырой" результат

{
  "request_id": "79f389eb-be78-dff6-e1b5-71034dc5fd87",
  "lease_id": "",
  "lease_duration": 0,
  "renewable": false,
  "data": {
    "certificate": "-----BEGIN CERTIFICATE-----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\n-----END CERTIFICATE-----",
    "expiration": 2264664187,
    "issuing_ca": "-----BEGIN CERTIFICATE-----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\nsjCYRMVUw1A6MBY5kS8KrTizRMIZCLKjSQoVY4F8Y7lMjnw=\n-----END CERTIFICATE-----",
    "serial_number": "40:b2:aa:32:ee:ea:2f:84:75:bb:8f:ec:2e:98:56:70:1c:66:f6:0d"
  },
  "warnings": null
}

PEM Файл

cat intermediateCA.cert.pem.json | jq -r .data.certificate > intermediateCA.cert.pem

-----BEGIN CERTIFICATE-----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-----END CERTIFICATE-----

Детали сертефиката

openssl x509 -in intermediateCA.cert.pem -noout -text
Certificate:
    Data:
        Version: 3 (0x2)
        Serial Number:
            40:b2:aa:32:ee:ea:2f:84:75:bb:8f:ec:2e:98:56:70:1c:66:f6:0d
        Signature Algorithm: sha256WithRSAEncryption
        Issuer: C = Ukraine, L = Kharkov, street = app. 131 + street = Lui Pastera St. 322, postalCode = 61172, O = Home Network, OU = IT, CN = Root Certificate Authority for Home Network
        Validity
            Not Before: Oct 11 09:22:37 2021 GMT
            Not After : Oct  6 09:23:07 2041 GMT
        Subject: C = Ukraine, L = Kharkov, street = Lui Pastera st. 322 app. 131, postalCode = 61172, O = Home Network, OU = IT, CN = Intermediate CA
        Subject Public Key Info:
            Public Key Algorithm: rsaEncryption
                RSA Public-Key: (2048 bit)
                Modulus:
                    00:c8:26:59:96:45:90:57:2e:03:32:99:6b:65:50:
                    29:fd:fb:72:35:05:2d:56:f8:ac:b2:6b:64:e0:b9:
                    cf:51:6e:58:5c:ca:3c:db:d4:3b:21:b6:42:40:76:
                    88:66:dd:bc:0f:9c:40:82:3f:20:b7:01:12:8e:c8:
                    df:31:ad:ea:58:3a:5a:61:b2:7d:fe:2f:7b:69:8c:
                    e7:ef:ab:b4:d2:25:79:75:f7:88:23:91:44:46:ec:
                    08:73:d8:50:7f:a0:fa:b4:f9:df:58:2d:80:7f:4d:
                    30:a1:d8:7d:ab:fb:79:17:31:7f:81:c8:94:dc:20:
                    74:3e:d3:7f:ba:12:be:f7:f9:fd:2a:3a:66:32:cb:
                    f5:3a:d6:59:a3:60:64:13:ce:58:4b:c7:30:56:67:
                    5c:6f:2c:d2:4a:68:c1:a8:64:78:03:c8:9d:79:6c:
                    bc:82:72:e4:a9:d0:66:05:9c:18:6d:c2:f4:b7:04:
                    be:b0:be:e8:68:9f:93:41:4e:32:dd:9c:f4:73:60:
                    0f:2c:6c:fa:b4:49:5a:69:51:0c:9d:69:56:37:bd:
                    d0:46:dc:7b:28:5a:ad:9d:f6:14:2c:e9:ce:7a:53:
                    2b:29:6b:1a:6c:90:a8:e9:11:da:52:a7:ff:ff:8d:
                    f4:36:70:70:2e:a7:80:1e:40:14:1a:8a:77:be:11:
                    fc:c5
                Exponent: 65537 (0x10001)
        X509v3 extensions:
            X509v3 Key Usage: critical
                Certificate Sign, CRL Sign
            X509v3 Basic Constraints: critical
                CA:TRUE
            X509v3 Subject Key Identifier:
                57:CC:17:CF:CF:21:94:71:42:B8:AB:06:7C:FD:FC:45:6D:F9:6A:4F
            X509v3 Authority Key Identifier:
                keyid:DB:3A:73:7A:03:25:2E:17:48:46:58:67:19:AD:86:2E:04:3D:EB:EC

    Signature Algorithm: sha256WithRSAEncryption
         88:e6:3d:6f:b3:11:a6:6f:6c:e1:77:5a:7b:ac:b2:62:6e:7b:
         69:24:7c:53:83:4a:86:f6:90:ca:cc:ed:de:ad:40:e2:6b:9d:
         e2:7d:34:5c:85:18:cd:aa:07:1d:4c:93:bc:f4:c6:c2:56:93:
         1c:2b:cf:3e:13:4d:57:dc:ab:46:64:c1:51:dd:5e:08:d4:69:
         a9:b5:d8:38:96:e8:9c:63:3a:ce:f7:64:b8:d0:28:91:1e:bf:
         54:17:3f:02:7e:d8:3d:27:11:99:02:4d:0c:37:74:9c:a6:3b:
         71:3c:cd:5f:66:ce:1d:d8:83:6d:42:dc:a3:b5:9f:c8:f3:a8:
         ad:a2:03:ec:28:7a:3b:86:b2:1d:a3:d2:06:98:56:bb:38:7b:
         ae:97:fb:98:97:76:7d:70:d2:ce:00:41:dc:04:56:ab:43:d5:
         67:bd:09:8f:a5:d6:aa:de:de:00:af:01:47:46:b9:f9:64:c8:
         0c:f4:76:ef:45:b8:2b:de:7b:39:53:8b:97:f5:37:52:79:f1:
         da:b2:1a:00:b9:51:af:20:5a:ae:32:95:63:d1:a8:d4:01:e7:
         75:ca:e5:5d:ed:2d:94:48:4d:6c:f1:1c:8d:ee:3d:ed:d0:3e:
         c5:1b:ba:51:10:24:c1:9d:96:0a:a8:17:3b:38:8d:98:76:2c:
         1d:3e:f4:07

Валидация с помошью корневого CA

openssl verify -verbose -CAfile rootCA.pem intermediateCA.cert.pem
intermediateCA.cert.pem: OK