Ruby Requires Chilkat v11.0.0+

ABN AMRO Create Signed JSON Web Token

See more ABN AMRO Examples

Demonstrates how to create a signed JWT to be used for authenticating requests to the ABN AMRO REST API's. Ruby

require 'chilkat'

success = false

#  This example requires the Chilkat API to have been previously unlocked.
#  See Global Unlock Sample for sample code.

#  Create public/private key pair (RSA)
rsa = Chilkat::CkRsa.new()

#  Generate a 2048-bit key.
privkey = Chilkat::CkPrivateKey.new()
success = rsa.GenKey(2048,privkey)
if (success == false)
    print rsa.lastErrorText() + "\n";
    exit
end

#  Export the key to PEM files.
#  Write one PEM file for the private key, and one for the public key.
success = privkey.SavePemFile("qa_data/pem/abnAmroPrivateKey.pem")

pubkey = Chilkat::CkPublicKey.new()
privkey.ToPublicKey(pubkey)
success = pubkey.SavePemFile(true,"qa_data/pem/abnAmroPublicKey.pem")
#  Note: Please share your public key along with your app name and developer email id at api.support@nl.abnamro.com. 
#  Token generation will not work unless public key is associated with your app.

#  Create the JWT.
jwt = Chilkat::CkJwt.new()

#  Create the header:
#  {
#      "typ": "JWT",
#      "alg": "RS256"
#  }
jsonHeader = Chilkat::CkJsonObject.new()
jsonHeader.UpdateString("typ","JWT")
jsonHeader.UpdateString("alg","RS256")

#  Create the payload:
#  {
#      "nbf": 1499947668,
#      "exp": 1499948668,
#      "iss": "me",
#      "sub": "anApiKey",
#      "aud": "https://auth-sandbox.abnamro.com/oauth/token"
#  }
jsonPayload = Chilkat::CkJsonObject.new()

curDateTime = jwt.GenNumericDate(0)

#  Set the "not process before" timestamp to now.
success = jsonPayload.AddIntAt(-1,"nbf",curDateTime)

#  Set the timestamp defining an expiration time (end time) for the token
#  to be now + 1 hour (3600 seconds)
success = jsonPayload.AddIntAt(-1,"exp",curDateTime + 3600)

jsonPayload.UpdateString("iss","me")
jsonPayload.UpdateString("sub","anApiKey")
jsonPayload.UpdateString("aud","https://auth-sandbox.abnamro.com/oauth/token")

#  Produce the smallest possible JWT:
jwt.put_AutoCompact(true)

jwtStr = jwt.createJwtPk(jsonHeader.emit(),jsonPayload.emit(),privkey)
if (jwt.get_LastMethodSuccess() == false)
    print jwt.lastErrorText() + "\n";
    exit
end

#  Here is the JWT:
print jwtStr + "\n";