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A cross-platform (Linux and Windows) library which builds a valid SAMLP AuthN Response in PHP which permits Federated access to Office 365. Ability to port to Java and .NET an advantage and may be available as a follow-on piece of work.
Library must generate
* SAML2 responses which meet industry standards for Web SSO
* Sign and (optionally) encrypt the payload
* Support SAML2 POST profile