HMAC SHA1 of Byte Array in “C” Programming Language
Here is a “C” programming language code snippet compute the HMAC SHA1 using byte arrays.
New Example for Paraguay E-Invoicing (SIFEN)
See this new example for signing XML E-invoices for Paraguay — SISTEMA INTEGRADO DE FACTURACIÓN ELECTRÓNICA NACIONAL (SIFEN). AutoIt Paraguay eInvoice XML Digital Signature C Paraguay eInvoice XML Digital Signature Python Paraguay eInvoice XML Digital Signature C++ Paraguay eInvoice XML Digital Signature C# Paraguay eInvoice XML Digital Signature DataFlex Paraguay eInvoice XML Digital Signature Delphi Paraguay eInvoice XML Digital Signature […]
Office 365 IMAP, POP, SMTP OAuth2 with Client Credentials
See https://learn.microsoft.com/en-us/exchange/client-developer/legacy-protocols/how-to-authenticate-an-imap-pop-smtp-application-by-using-oauth#use-client-credentials-grant-flow In my opinion, this is still too complicated. An “easy button” is needed.
What to do if Chilkat.Cert.LoadFromSmartcard Fails?
Here are the initial steps to follow to determine the reason why LoadFromSmartcard failed. Make sure to set the Cert,SmartCardPin property prior to calling LoadFromSmartcard. Make sure you are using the very latest version of Chilkat. Chilkat’s internal intelligence regarding the options and choices to be made for different smartcard makes/models evolves with each new version. Assuming the failure persists […]
Solving CryptoCard Graphite Plus Smart Card Signing Problems
Information about the CryptoCard Graphite Plus smartcard is located at https://www.cryptotech.com.pl/Produkty/CryptoCard_Graphite,content.html “The card works closely with the new edition of the CryptoCard Suite software dedicated to it, which allows you to manage the content of the card and mediates in communication between programs using the card (logging into operating systems, e-mail programs, web browsers or signing applications) and the card […]
Types of Smartcard PINs
Smartcards use various types of PINs (Personal Identification Numbers) for authentication and security purposes. Some common types of PINs associated with smartcards are: User PIN: The User PIN is the primary PIN used by the cardholder to authenticate themselves and access the smartcard’s functionality. It is typically used for general card operations, such as authentication, digital signatures, and encryption. The […]
Resolving the Error: Chilkat native code library failed to load. No chilkat in java.library.path
Question: I have the chilkat.jar & chilkat.dll in my main installation folder. I can get the native library to work in Eclipse. However, when I build my app and install it I get this error: Chilkat native code library failed to load. no chilkat in java.library.path What do I need to do in my installer? Answer: I recommend first looking […]
Amazon SP-API Postman Collections Added to Online Code Generator
Chilkat added some Amazon SP-API Postman collections to the online code generator at https://tools.chilkat.io/postmanCollection The Postman collections were obtained from the Swagger files located at https://github.com/amzn/selling-partner-api-models/tree/main/models If additional SP-API collections are needed, contact info@chilkatsoft.com.
Office365 POP3 Authenticate Fails but Previously Succeeded
It’s normal for OAuth2 access tokens to expire after some time, such as 1 hour, and then you’ll need to refresh and retry. For example, this error in the LastErrorText for a call to Pop3Authenticate could indicate the OAuth2 accces token expired: Pop3Authenticate: DllDate: Mar 28 2023 ChilkatVersion: 9.5.0.94 UnlockPrefix: *** Architecture: Little Endian; 32-bit Language: ActiveX VerboseLogging: 1 Pop3Authenticate: […]
Quickly Understanding the MIME Format of Email
The format of email is MIME. A simple MIME message consists of headers followed by a body. For example, here’s a simple text/plain email: From: sender@example.com To: recipient@example.com Subject: Example Email Content-Type: text/plain; charset=”UTF-8″ Hello, This is a simple plain text email. Regards, Sender MIME can be multipart. Here’s a text/plain email with a PDF attachment: From: sender@example.com To: recipient@example.com […]