(Swift 3,4,5...) bitzlato.com whoami

Demonstrates sending a request to the bitzlato.com whoami endpoint using an ES256 JWT token for authentication.

Chilkat Downloads for the Swift Programming Language MAC OS X (Cocoa) Objective-C/Swift Libs iOS Objective-C/Swift Libs

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

    var success: Bool

    //  Use the following ECC key loaded from JWK format.
    let jwk = CkoJsonObject()!
    success = jwk.update("kty", value: "EC")
    success = jwk.update("crv", value: "P-256")
    success = jwk.update("x", value: "...")
    success = jwk.update("y", value: "...")
    success = jwk.update("d", value: "...")

    let eccKey = CkoPrivateKey()!
    success = eccKey.loadJwk(jwk.emit())
    if success == false {
        print("\(eccKey.lastErrorText!)")
        return
    }

    let jwt = CkoJwt()!

    // Build the JOSE header
    let jose = CkoJsonObject()!
    success = jose.append("format", value: "compact")
    success = jose.append("alg", value: "ES256")

    // Now build the JWT claims (also known as the payload)

    // Our JWT claims will contain members as shown here:

    // 	{
    // 	  "email":"your_email@example.com",
    // 	  "aud":"usr",
    // 	  "iat":"1588286154",
    // 	  "jti":"555D9123"
    // 	}

    let claims = CkoJsonObject()!
    claims.append("jti", value: "555D9123")
    claims.append("email", value: "your_email@example.com")

    // Set the timestamp of when the JWT was created to now minus 60 seconds
    var curDateTime: Int = jwt.genNumericDate(-60).intValue
    success = claims.addInt(at: -1, name: "iat", value: curDateTime)

    // Set the "not process before" timestamp to now minus 60 seconds
    success = claims.addInt(at: -1, name: "nbf", value: curDateTime)

    // Set the timestamp defining an expiration time (end time) for the token
    // to be now + 1 hour (3600 seconds)
    success = claims.addInt(at: -1, name: "exp", value: curDateTime + 3600)

    claims.append("aud", value: "usr")

    // Produce the smallest possible JWT:
    jwt.autoCompact = true

    // Create the JWT token.  This is where the RSA signature is created.
    var jwt_token: String? = jwt.createJwtPk(jose.emit(), payload: claims.emit(), key: eccKey)

    print("\(jwt_token!)")

    // Send the HTTPS GET with the jwt_token used for Authorization.
    let http = CkoHttp()!
    http.authToken = jwt_token
    var responseStr: String? = http.quickGetStr("https://bitzlato.com/api/auth/whoami")
    if http.lastMethodSuccess == false {
        print("\(http.lastErrorText!)")
        return
    }

    print("status code = \(http.lastStatus.intValue)")
    print("\(responseStr!)")

}