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Auth with API Keys

The Api Keys library supports two flows of accessing API with API Keys:

Basic Flow​

Each Api Key is a pair: ApiKey and ApiSecret. ApiKey is a name of the pair, and ApiSecret is used to get a query's signature. Signature is used to verify that a query was signed with a valid ApiSecret.

Api Keys for REST Client​

Provide two headers to send requests with API Keys:

X-Deltix-ApiKey:# ApiKey
X-Deltix-Signature:# signature

where

  • X-Deltix-ApiKey: your ApiKey
  • X-Deltix-Signature: a payload, signed by ApiSecret with hmac sha384 algorithm
    • Base64EncodedString(HmacSHA384(Payload, ApiSecret)), where
      • Payload = uppercase(HttpMethod) + lowercase(UrlPath) + QueryParameters + body, where
        • QueryParameters is separated by & lowercase(key)=value pairs, sorted alphabetically by keys

Example

To send query:

GET http://localhost:8099/api/v0/charting/bbo?startTime=2009-06-19T19:22:00.000Z&endTime=2009-06-19T19:25:00.000Z&symbols=AAPL&levels=1&maxPoints=6000&type=TRADES_BBO

  1. Calculate a signature:
  • ApiSecret = your ApiSecret
  • Payload = GET/api/v0/charting/bboendtime=2009-06-19T19:25:00.000Z&levels=1&maxpoints=6000&starttime=2009-06-19T19:22:00.000Z&symbols=AAPL&type=TRADES_BBO
  • Use Base64EncodedString(HmacSHA384(Payload, ApiSecret)) to calculate a Signature = 7amMhPgGq2mXo6twDUyDUlWAYJ9g+PyemZ1yIj6yhCnk4TS5viVi9DCGpaWX+GZz.
  1. Add two headers to the query and make a Send:
GET http://localhost:8099/api/v0/charting/bbo?startTime=2009-06-19T19:22:00.000Z&endTime=2009-06-19T19:25:00.000Z&symbols=AAPL&levels=1&maxPoints=6000&type=TRADES_BBO
X-Deltix-ApiKey:#your ApiKey
X-Deltix-Signature:7amMhPgGq2mXo6twDUyDUlWAYJ9g+PyemZ1yIj6yhCnk4TS5viVi9DCGpaWX+GZz

Example with Body

POST http://localhost:8099/api/v0/bars1min/goog/select

{
  "from":null,
  "to":null,
  "offset":0,
  "rows":1000,
  "reverse":false,
  "space":null,
  "types": ["deltix.timebase.api.messages.BarMessage"]
}

Use:

  • ApiSecret = your ApiSecret
  • Payload = POST/api/v0/bars1min/goog/select{"from":null,"to":null,"offset":0,"rows":1000,"reverse":false,"space":null,"types":["deltix.timebase.api.messages.BarMessage"]}

To calculate a Signature via Base64EncodedString(HmacSHA384(Payload, ApiSecret)):

  • Signature = DtMdHJ4vc0LYx9H0YB80dICiah10x/i1KFrJ+Ba+RyOw5wc+6WcXdxCHA3GFYrIe

Pass two headers with POST request: 

POST http://localhost:8099/api/v0/bars1min/goog/select{"from":null,"to":null,"offset":0,"rows":1000,"reverse":false,"space":null,"types":["deltix.timebase.api.messages.BarMessage"]}
X-Deltix-ApiKey:#your ApiKey
X-Deltix-Signature:DtMdHJ4vc0LYx9H0YB80dICiah10x/i1KFrJ+Ba+RyOw5wc+6WcXdxCHA3GFYrIe

WebSockets Api Keys Support​

Provide 3 STOMP headers to connect to WebGateway with websockets:

X-Deltix-ApiKey
X-Deltix-Payload
X-Deltix-Signature

where

  • ApiKey: your ApiKey
  • Payload: random string
  • Signature: signature value calculated using Base64EncodedString(HmacSHA384(Signature payload, ApiSecret))
    • Signature payload: CONNECTX-Deltix-Payload= + HeaderValue(X-Deltix-Payload) + "&X-Deltix-ApiKey=" + HeaderValue(X-Deltix-ApiKey)
    • ApiSecret: your ApiSecret

Example

Take:

  • ApiKey = your ApiKey
  • ApiSecret = your ApiSecret
  • Payload (random string) = 90dd333e-4858-4fba-a71b-12f958b36689
  • Signature payload = CONNECTX-Deltix-Payload= 90dd333e-4858-4fba-a71b-12f958b36689&X-Deltix-ApiKey=yourApiKey
  • Signature = nAoVRNtR+g8gKUG6/4hQbBbRy6A9KcqGfBjIx1gZCfwrGkvHBelJIpzosxelRRGF

Connect a STOMP query:

CONNECT
X-Deltix-ApiKey:#your ApiKey
X-Deltix-Payload:90dd333e-4858-4fba-a71b-12f958b36689
X-Deltix-Signature:nAoVRNtR+g8gKUG6/4hQbBbRy6A9KcqGfBjIx1gZCfwrGkvHBelJIpzosxelRRGF
heart-beat:0,0
accept-version:1.1,1.2

Client Samples​

Python REST Sample

import requests
import hashlib
import hmac
import base64

apiKey = "TEST_API_KEY"
apiSecret = "TEST_API_SECRET"
payload = "GET/api/v0/streams"
signature = base64.b64encode(hmac.new(apiSecret.encode('utf-8'), payload.encode('utf-8'), hashlib.sha384).digest())

headers = {'X-Deltix-ApiKey' : apiKey, 'X-Deltix-Signature' : signature}
response = requests.get("http://localhost:8099/api/v0/streams", headers=headers)

print(response)
print(response.json())

API Keys Configuration to Run These Code Examples

security:
  authorization:
    source: CONFIG # valid values: FILE, CONFIG
  api-keys:
    sessions:
      enabled: false
  api-keys-provider:
    api-keys:
      - name: TEST_API_KEY
        key: TEST_API_SECRET
        user: admin
        authorities: [TB_ALLOW_READ, TB_ALLOW_WRITE]
info

Refer to Web Admin configuration to learn how to configure the application.

Session-Based Flow​

When Api Keys library is configured to use sessions, server does not store any private (secret) keys. In this case, client and secret must perform a login procedure to create a session with a secret key shared only between the client and the server.

Session includes two steps:

  1. Login attempt
  2. Login confirmation

Login Attempt​

In this step the Client sends an attempt POST request to the Web server.

POST /api/v1/login/attempt

Request details:

  • api_key_id [string] - API key identifier that is going to be used for creating the session.

Response details:

  • session_id [string] - Unique session identifier generated by the server;
  • challenge [string] - Random string generated by the server that is used for user validation, encoded as base64;
  • dh_base [string] - String containing Diffie–Hellman public base, encoded as base64;
  • dh_modulus [string] - String containing Diffie–Hellman public modulus, encoded as base64;
  • ttl [string] - Number of milliseconds defining the time when session will be dropped if no confirmation comes.

Login Confirmation​

In this step the Client sends a confirmation POST request to the Web server.

POST /api/v1/login/confirm

Request details:

  • session_id [string] - Unique session identifier generated by the server;
  • signature [string] - String, containing a base54-encoded signature generated using SHA256withRSA of challenge string provided to the client during login attempt and a private key of the API key, which identifier was sent to the server during login attempt;
  • dh_key [string] - String containing Diffie–Hellman key of the client, encoded as base64.

Response details:

  • dh_key [string] - String containing client's Diffie–Hellman public key, encoded as base64;
  • keepalive_timeout [string] - Inactivity period after which the session will be terminated by the server in milliseconds.

Upon the successful completion of this step, both the Client and the Server have enough data to generate Session Secret using Diffie–Hellman method. Session Secret is used for signing requests - see the following section.

Using Session​

Each REST and Websocket CONNECT request must be signed using a session secret. Web server will compute the signature on such requests and, if the result is different from the signature provided, the request will be rejected.

Include three headers in the request:

  • X-Deltix-Nonce - is a number called nonce. Each subsequent request within a single session must have nonce value greater than the previous request nonce value. If the request contains the same or lower nonce value than the previous request, such request will be rejected;
  • X-Deltix-Session-Id - session identifier created during the login. This must be equal to the session_id returned by the login attempt;
  • X-Deltix-Signature - signature string.

Where Signature is calculated as follows Base64EncodedString(HmacSHA384(Payload, SessionSecret)), where

  • Payload = uppercase(HttpMethod) + lowercase(UrlPath) + QueryParameters + RequestHeaders + body
    • where QueryParameters is separated by '&' lowercase(key)=value pairs, sorted alphabetically by key
    • and RequestHeaders = X-Deltix-Nonce=...&X-Deltix-Session-Id=...
  • SessionSecret generated after the login procedure.

WebSockets with Sessions​

Provide 3 STOMP headers to connect to WebGateway with websockets:

X-Deltix-Session-Id
X-Deltix-Signature
X-Deltix-Nonce

where

  • X-Deltix-Session-Id: Your session id
  • X-Deltix-Signature: Base64EncodedString(HmacSHA384(Payload, SessionSecret))
    • Payload: "CONNECTX-Deltix-Nonce=" + nonce + "&X-Deltix-Session-Id=" + sessionId
    • SessionSecret: generated after the login procedure
  • X-Deltix-Nonce:a number called nonce. Each subsequent request within a single session must have nonce value greater than the previous request nonce value. If the request contains the same or lower nonce value than the previous request, such request will be rejected;

Example

CONNECT
X-Deltix-Session-Id:#Your session id
X-Deltix-Signature:#Signature
X-Deltix-Nonce:1000
heart-beat:0,0
accept-version:1.1,1.2

Client Samples​

API Keys Configuration to Run These Code Examples

security:
  authorization:
    source: CONFIG # valid values: FILE, CONFIG
  api-keys:
    sessions:
      enabled: true
  api-keys-provider:
    api-keys:
      - name: TEST_SESSION_API_KEY
        key: "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDq/Y/kEag9vPlfPu2dzFUeuPTZX94g85v/L3TxRvXHmR1IQtjOSPCtY4NmzeLb3rLwf0J2+X8HeC3Fva6oRVl5hora77cOTmLuTmEZe6oVxjFvdRsQqfcUlAqijViiPMlnDQZ/HsC6S7WLZyMwatdbBsFtnbT9fb3m4VDeakUVQwIDAQAB"
        user: admin
        authorities: [TB_ALLOW_READ, TB_ALLOW_WRITE]
info

Refer to Web Admin configuration to learn how to configure the application.

Configuration​

Configuration of API Keys​

You can configure Basic and Session-based flows in TimeBase Web Admin application.yaml.

info

Refer to Web Admin configuration to learn how to configure the application.

To switch between Basic (default) and Session-based flows use flag:

security:
  api-keys:
    sessions:
      enabled: false # sessions are disabled by default

Configuration to Run Code Examples​

# configuration to run code examples from this manual

# basic flow
security:
  authorization:
    source: CONFIG # valid values: FILE, CONFIG
  api-keys:
    sessions:
      enabled: false
  api-keys-provider:
    api-keys:
      - name: TEST_API_KEY
        key: TEST_API_SECRET
        user: admin
        authorities: [TB_ALLOW_READ, TB_ALLOW_WRITE]
      - name: TEST_SESSION_API_KEY
        key: "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDq/Y/kEag9vPlfPu2dzFUeuPTZX94g85v/L3TxRvXHmR1IQtjOSPCtY4NmzeLb3rLwf0J2+X8HeC3Fva6oRVl5hora77cOTmLuTmEZe6oVxjFvdRsQqfcUlAqijViiPMlnDQZ/HsC6S7WLZyMwatdbBsFtnbT9fb3m4VDeakUVQwIDAQAB"
        user: admin
        authorities: [TB_ALLOW_READ, TB_ALLOW_WRITE]

# session-based flow
security:
  authorization:
    source: CONFIG # valid values: FILE, CONFIG
  api-keys:
    sessions:
      enabled: true
  api-keys-provider:
    api-keys:
      - name: TEST_API_KEY
        key: TEST_API_SECRET
        user: admin
        authorities: [TB_ALLOW_READ, TB_ALLOW_WRITE]
      - name: TEST_SESSION_API_KEY
        key: "MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQDq/Y/kEag9vPlfPu2dzFUeuPTZX94g85v/L3TxRvXHmR1IQtjOSPCtY4NmzeLb3rLwf0J2+X8HeC3Fva6oRVl5hora77cOTmLuTmEZe6oVxjFvdRsQqfcUlAqijViiPMlnDQZ/HsC6S7WLZyMwatdbBsFtnbT9fb3m4VDeakUVQwIDAQAB"
        user: admin
        authorities: [TB_ALLOW_READ, TB_ALLOW_WRITE]
info

Refer to Web Admin configuration to learn how to configure the application.

Session-Based Flow Configuration​

security:
  api-keys:
    sessions:
      login-root: api/v0
      challengeSize: 2048
      dhSecretSize: 512
      keepAliveMs: 100000
      keepAliveLoginMs: 10000
      keepAliveTimerMs: 1000
      dhBase: 2
      dhModulus: 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

Configuration of API Keys Provider​

There are two options to store API keys: in application.yaml config and in JSON file.

Example when API keys are stored in application.yaml config:

security:
  authorization:
    source: CONFIG # valid values: FILE, CONFIG
  api-keys-provider:
    api-keys: # list of api keys and their users
      - name: api key name
        key: api key
        user: api key user
        authorities: [TB_ALLOW_READ, TB_ALLOW_WRITE] # Specify authorities for api key, otherwise authorities will get from user - see Authorization section.
      - name: api key name
        key: api key
        user: api key user

You can also use a JSON file to configure API keys:

security:
  authorization:
    source: FILE # valid values: FILE, CONFIG
    file-source:
      path: /path/to/tbwg.users.json

tbwg.users.json example:

{
  "apiKeys" : [ {
    "name" : "api key name",
    "key" : "api key",
    "user" : "api key user"
  } ]
}
info

Refer to Web Admin configuration to learn how to configure the application.