Chilkat v11.5.0 Release Notes

Pinned June 2, 2026

  ✨ New Features HttpCurl A new Chilkat class has been added: HttpCurl The Chilkat.HttpCurl class executes curl commands and can automatically resolve dependent values needed by a request. Variables such as {{access_token}}, {{site_id}}, or {{drive_id}} may appear in URLs, headers, query parameters, or request bodies. If a variable is not yet known, HttpCurl builds […]

Chilkat v11.4.0 Release Notes

Pinned April 1, 2026

  ✨ New Features Js A new Chilkat class has been added: Js is a minimal, standards-compliant JavaScript engine designed to embed JavaScript inside applications with very small footprint and fast startup. It executes JavaScript code inside an application without requiring a browser or large runtime. See About the Chilkat.Js JavaScript Engine Ai Provider — […]

PEPPOL 403 Forbidden Problem Solved

May 9, 2024 in PEPPOL

The PEPPOL test server at api.ixordocs-stg.com requires the “User-Agent” header field to be present.  For example, a GET request to /v1/peppol/status  is successful if the User-Agent header is present, and the returned response is: HTTP/1.1 200 OK Date: Thu, 09 May 2024 12:28:34 GMT Content-Type: text/html; charset=utf-8 Content-Length: 42 Connection: keep-alive x-amzn-RequestId: **** access-control-allow-origin: * […]

What Replaced Old Chilkat Async Methods?

May 8, 2024 in Async

In the distant past, there were some Chilkat classes that had a few ad-hoc Async methods and properties.  For example, the Ftp2 class contained the methods AsyncPutFileStart, AsyncGetFileStart, AsyncAppendFileStart, and properties such as AsyncFinished, AsyncSuccess, and AsyncLog. A number of years ago, these were replaced with a consistent and standard async model that applies to […]

Adobe Acrobat DC — Fixing up Form Fields?

May 8, 2024 in PDF

A Chilkat customer signed a PDF using the Chilkat API. There were no errors, and the output PDF seemed to be signed. Using the Chilkat API to verify the signed PDF was also successful. Chilkat could see the signature and validated it successfully. However, the signature in the signed PDF could not be seen in […]

XmlDSig Error: Did not find same-document Reference Id

May 3, 2024 in XML Digital Signature

If signing XML fails with the following message in the LastErrorText: … Doing first SAX parse… checkAllReferencesFound: passNumber: 1 reference: Did not find same-document Reference Id referenceId: id-1234567890 –reference –checkAllReferencesFound … It means there was no XML element in the XML you were trying to sign that has an Id attribute with the given value. […]

Office365 – 451 4.7.0 Temporary server error. Please try again later. PRX5

May 3, 2024 in Office365

A Chilkat user is getting this error response from smtp.office365.com. He successfully got his OAuth2 access token, but then when trying to send the email, the Office365 server responded with this error indicating a temporary problem: “451 4.7.0 Temporary server error. Please try again later. PRX5 …” This is not an error caused because of […]

How to Upload a .zip to Firebase Storage

May 2, 2024 in Firebase

Many developers would like to interact with Firebase from programming languages or operating systems that are not directly supported by Google. For example, looking at the documentation here: https://firebase.google.com/docs/storage, we can see how to interact with Firebase storage from iOS+, Android, C++, etc. using Google’s SDK. Unless we know the actual raw HTTP requests and […]

Smart Card Vendors: Please document ATR’s and Driver DLLs

May 2, 2024 in Smart Cards

Chilkat auto-recognizes HSM’s (smart cards and USB tokens) by the ATR. A Smart Card Answer to Reset (ATR) is a special sequence of bytes sent by a smart card when it is powered on or reset. It serves as the initial communication between the card and the card reader or terminal. The ATR contains information […]

SSH authentication using X.509 certificates

April 30, 2024 in Uncategorized

Question: I am unable to determine from the documentation if the Chilkat library supports SSH authentication using X.509 certificates.   In our application, we need to establish secure SSH connections to remote servers, and we prefer to use X.509 certificates for authentication instead of traditional username/password or key-based authentication methods. Could you please clarify if the […]

Chilkat Updated to Support AKiS Smart Cards

April 30, 2024 in Smart Cards

AKiS is a smart card operating system which can be used in personal identification, digital sign, health care system, smart logon, secure email, etc. It is developed within The National Research Institute Of Electronics And Cryptology (UEKAE), a subsidiary of The Scientific & Technological Research Council of Turkey (TUBITAK). There was a problem relating to […]

Malaysia EInvoice

April 24, 2024 in XMLDsig

Questions: We are struggling to fulfill the EInvoice implementation mandate from Malaysian government, which is on 1st August 2024 (3 months from now). We wish to implement a direct integration from the company system to the government system through API (EInvoice submission and retrieval). After studying the guidance from the government on Digital Signature at […]