VBA RFC 2104-compliant HMAC with the SHA256 hash

JeffKoch

New Member
Joined
Jul 29, 2009
Messages
1
I had some nice Excel tools that looked up book information on Amazon using their AWSE service. Recently, Amazon has instituted a change in their API so that all requests for information to their web service need to have a signature which is a signed hash of the URL request. (http://docs.amazonwebservices.com/A.../index.html?RequestAuthenticationArticle.html)

Does anyone know how to do this in VBA?

I've found some examples of encrypting text and creating a hash, but not for creating a signed hash.
 

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