PowerBuilder

Create JWT using a Certificate's Private Key

See more JSON Web Token (JWT) Examples

Demonstrates how to create a JWT using a certificate's private key. PowerBuilder

integer li_rc
integer li_Success
oleobject loo_Cert
oleobject loo_Jwt
oleobject loo_Jose
oleobject loo_Claims
integer li_CurDateTime
string ls_Token

li_Success = 0

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

// Demonstrates how to create a JWT using an certificate's private key.

loo_Cert = create oleobject
li_rc = loo_Cert.ConnectToNewObject("Chilkat.Cert")
if li_rc < 0 then
    destroy loo_Cert
    MessageBox("Error","Connecting to COM object failed")
    return
end if

// Load an ECC private key from a PEM file.
li_Success = loo_Cert.LoadPfxFile("c:/temp/myPfx.pfx","pfxPassword")
if li_Success <> 1 then
    Write-Debug loo_Cert.LastErrorText
    destroy loo_Cert
    return
end if

loo_Jwt = create oleobject
li_rc = loo_Jwt.ConnectToNewObject("Chilkat.Jwt")

// Build the JOSE header
loo_Jose = create oleobject
li_rc = loo_Jose.ConnectToNewObject("Chilkat.JsonObject")

// Note: The IsEcdsa function was added in Chilkat v10.1.0
if loo_Cert.IsEcdsa() = 1 then
    // Use ES256.  Pass the string "ES384" or "ES512" to use ECC with SHA-384 or SHA-512.
    loo_Jose.AppendString("alg","ES256")
else
    // Probably RSA...
    // Use RS256.  Pass the string "RS384" or "RS512" to use RSA with SHA-384 or SHA-512.
    loo_Jose.AppendString("alg","RS256")
end if

loo_Jose.AppendString("typ","JWT")

// Now build the JWT claims (also known as the payload)
loo_Claims = create oleobject
li_rc = loo_Claims.ConnectToNewObject("Chilkat.JsonObject")

loo_Claims.AppendString("iss","http://example.org")
loo_Claims.AppendString("sub","John")
loo_Claims.AppendString("aud","http://example.com")

// Set the timestamp of when the JWT was created to now.
li_CurDateTime = loo_Jwt.GenNumericDate(0)
loo_Claims.AddIntAt(-1,"iat",li_CurDateTime)

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

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

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

// Create the JWT token.
ls_Token = loo_Jwt.CreateJwtCert(loo_Jose.Emit(),loo_Claims.Emit(),loo_Cert)

Write-Debug ls_Token

// Example output:
// eyJhbGciOiJFUzI1NiIsInR5cCI6IkpXVCJ9.eyJpc3MiOiJodHRwOi8vZXhhbXBsZS5vcmciLCJzdWIiOiJKb2huIiwiYXVkIjoiaHR0cDovL2V4YW1wbGUuY29tIiwiaWF0IjoxNDg1NzA4NzkyLCJuYmYiOjE0ODU3MDg3OTIsImV4cCI6MTQ4NTcxMjM5Mn0.wqsuyJpxJ073ox-lOiLFqG1lQocXe4hGf2XGZJRrO3qn0UusxI_bu3Gzky8gBsH4sA4u9TWZn5M-1wYMMIJk6Q


destroy loo_Cert
destroy loo_Jwt
destroy loo_Jose
destroy loo_Claims