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.
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 […]
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: […]
AES-CMAC Keyed Hash Algorithm
The AES-CMAC keyed hash function, see https://www.rfc-editor.org/rfc/rfc4493, has been added to Chilkat for the next version release (v9.5.0.95). Here are some examples: AutoIt AES-CMAC C AES-CMAC Python AES-CMAC C++ AES-CMAC C# AES-CMAC DataFlex AES-CMAC Delphi AES-CMAC Visual FoxPro AES-CMAC Go AES-CMAC Java AES-CMAC Objective-C AES-CMAC Perl AES-CMAC PHP ActiveX AES-CMAC PHP AES-CMAC PowerBuilder AES-CMAC PowerShell AES-CMAC Swift AES-CMAC Tcl AES-CMAC […]
Handling Emails with Unusual or Unconventional MIME Structure
In rare cases, an email’s MIME might be structured in a way that is highly unusual and doesn’t follow conventions. In other words, the nested MIME structure of an email should follow conventions that make it possible to semantically understand the purpose of each MIME part — such as an attachment, or an image to be included in the HTML […]
Getting an OAuth2 access token using “client credentials” does not require interactivity with a browser
The “client credentials” OAuth2 flow is allowed by many REST API’s for the case where a program is running in a non-interactive environment. It’s simply an HTTP POST where the client_id and client_secret are sent, and the OAuth2 access token is returned. If you have a sample CURL statement that demonstrates how to do it, you can generate Chilkat source […]
SFTP Server Responds with SSH_FX_NO_SUCH_FILE when trying to OpenFile
If your application calls Chilkat’s SFtp.OpenFile, and it fails because the server responded with SSH_FX_NO_SUCH_FILE, it means the file does not exist on the server. Trust that this is correct — the server would not say so unless the remote file truly does not exist on the server at the path your application provided. All remote file paths passed to […]