Calculate an RFC 2104-compliant HMAC with the SHA256 hash algorithm

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We are in need of a FMP database that can Calculate an RFC 2104-compliant HMAC with the SHA256 hash algorithm. This is a solution to a new requirement that Amazon.com has:

http://docs.amazonwebservices.com/AWSECommerceService/latest/DG/index.html?rest-signature.html

So we need to take our Access Key and Calculate an RFC 2104-compliant HMAC with the SHA256 hash algorithm.

Here is an example:

Calculate an RFC 2104-compliant HMAC with the SHA256 hash algorithm with our Secret Access Key: 1234567890.

After encoding it should be:

Nace+U3Az4OhN7tISqgs1vdLBHBEijWcBeCqL5xN9xg=

Any help would be great as this is way over my head☺

Thanks for your help.

Edited August 24, 2009 by Guest