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(PowerBuilder) ABN AMRO Create Signed JSON Web Token

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

For more information, see https://developer.abnamro.com/get-started#headingFive

Chilkat ActiveX Downloads

ActiveX for 32-bit and 64-bit Windows

integer li_rc
oleobject loo_Rsa
integer li_Success
oleobject loo_Privkey
oleobject loo_Pubkey
oleobject loo_Jwt
oleobject loo_JsonHeader
oleobject loo_JsonPayload
integer li_CurDateTime
string ls_JwtStr

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

// Create public/private key pair (RSA)
loo_Rsa = create oleobject
li_rc = loo_Rsa.ConnectToNewObject("Chilkat_9_5_0.Rsa")
if li_rc < 0 then
    destroy loo_Rsa
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Generate a 2048-bit key.
li_Success = loo_Rsa.GenerateKey(2048)
if li_Success <> 1 then
    Write-Debug loo_Rsa.LastErrorText
    destroy loo_Rsa
    return
end if

// Export the key to PEM files.
// Write one PEM file for the private key, and one for the public key.
loo_Privkey = loo_Rsa.ExportPrivateKeyObj()
li_Success = loo_Privkey.SavePemFile("qa_data/pem/abnAmroPrivateKey.pem")

loo_Pubkey = loo_Rsa.ExportPublicKeyObj()
li_Success = loo_Pubkey.SavePemFile(1,"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.
loo_Jwt = create oleobject
li_rc = loo_Jwt.ConnectToNewObject("Chilkat_9_5_0.Jwt")

// Create the header:
// {
//     "typ": "JWT",
//     "alg": "RS256"
// }
loo_JsonHeader = create oleobject
li_rc = loo_JsonHeader.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

loo_JsonHeader.UpdateString("typ","JWT")
loo_JsonHeader.UpdateString("alg","RS256")

// Create the payload:
// {
//     "nbf": 1499947668,
//     "exp": 1499948668,
//     "iss": "me",
//     "sub": "anApiKey",
//     "aud": "https://auth-sandbox.abnamro.com/oauth/token"
// }
loo_JsonPayload = create oleobject
li_rc = loo_JsonPayload.ConnectToNewObject("Chilkat_9_5_0.JsonObject")

li_CurDateTime = loo_Jwt.GenNumericDate(0)

// Set the "not process before" timestamp to now.
li_Success = loo_JsonPayload.AddIntAt(-1,"nbf",li_CurDateTime)

// Set the timestamp defining an expiration time (end time) for the token
// to be now + 1 hour (3600 seconds)
li_Success = loo_JsonPayload.AddIntAt(-1,"exp",li_CurDateTime + 3600)

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

// Produce the smallest possible JWT:
loo_Jwt.AutoCompact = 1

ls_JwtStr = loo_Jwt.CreateJwtPk(loo_JsonHeader.Emit(),loo_JsonPayload.Emit(),loo_Privkey)
if loo_Jwt.LastMethodSuccess <> 1 then
    Write-Debug loo_Jwt.LastErrorText
    destroy loo_Rsa
    destroy loo_Jwt
    destroy loo_JsonHeader
    destroy loo_JsonPayload
    return
end if

destroy loo_Privkey
destroy loo_Pubkey

// Here is the JWT:
Write-Debug ls_JwtStr


destroy loo_Rsa
destroy loo_Jwt
destroy loo_JsonHeader
destroy loo_JsonPayload

 

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