I have been involved in the AdroitLogic AS2Gateway, a SaaS B2B AS2 messaging platform, for almost two years now, and one of the common issues we see in the users who are getting started with AS2 is decryption failure. In this blog post, we will look at what encryption and decryption are in AS2 protocol, how to decrypt an AS2 message, and some tips on figuring out the cause for certain decryption failures.

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