title: Configure Spring Security SAML to use SHA-256 as secure hash algorithm
body: <p>I'm working on an integration between Spring SAML and Microsoft ADFS 3.0. Even it is already stated in <a href="http://docs.spring.io/spring-security-saml/docs/1.0.2.BUILD-SNAPSHOT/reference/html/chapter-idp-guide.html#d5e1748" rel="noreferrer">the documentation of Spring SAML</a> as:</p>
  
  <blockquote>
    <p>Open the provider by double-clicking it, select tab Advanced and change 
    "Secure  hash algorithm" to SHA-1</p>
  </blockquote>
  
  <p>that I understand that Spring SAML supports currently only SHA-1 as hash algorithm, but my requirement is using SHA-256. If I try configure only in ADFS for SHA-256, it doesn't work. I suppose that I have to do something with Spring SAML. Do you have any idea how to do so? </p>