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<p style="margin: 10px 0 0 0">Not sure if this was a rhetorical question so here's the Script Attribute Definition we use on our current v2 IdP.</p>
<p style="margin: 10px 0 0 0">{{ <resolver:AttributeDefinition xsi:type="ad:Script" id="password" dependencyOnly="true"><br /> <resolver:AttributeEncoder xsi:type="enc:SAML1String" name="urn:mace:dir:attribute-def:password" /><br /> <resolver:AttributeEncoder xsi:type="enc:SAML2String" name="urn:oid:1.3.6.1.4.1.1466.115.121.1.40" friendlyName="password" /><br /> <ad:Script><br /> <![CDATA[<br /> importPackage(Packages.edu.internet2.middleware.shibboleth.common.attribute.provider);<br /> importPackage(Packages.edu.internet2.middleware.shibboleth.idp.authn.provider);<br /> importPackage(Packages.org.opensaml.xml.util);<br /> importPackage(Packages.javax.crypto);<br /> importPackage(Packages.javax.crypto.spec);<br /> importPackage(Packages.java.security);<br /> importPackage(Packages.java.io);<br /> importPackage(Packages.sun.misc);</p>
<p style="margin: 10px 0 0 0"> // Create new password attribute<br /> password = new BasicAttribute("encPassword");</p>
<p style="margin: 10px 0 0 0"> // Verify the existence of a user session (login at another IdP)<br /> if (requestContext.getUserSession() != null) {</p>
<p style="margin: 10px 0 0 0"> // Load IV<br /> salt_bytes=<span class="error">[---REDACTED---]</span>;<br /> salt_array=java.lang.reflect.Array.newInstance(java.lang.Byte.TYPE, salt_bytes.length);<br /> for(j=0; j<salt_bytes.length; j++) </p> { s=new java.lang.Integer(salt_bytes[j]); salt_array[j]=s.byteValue(); }
<p style="margin: 10px 0 0 0"> salt = new IvParameterSpec(salt_array);<br /> // Load key<br /> key_ois = new ObjectInputStream(new ByteArrayInputStream(Base64.decode("--</p>
<del>
REDACTED
</del>--")));<br /> key = key_ois.readObject();<br /> ec = Cipher.getInstance("AES/CBC/PKCS5Padding");<br /> ec.init(Cipher.ENCRYPT_MODE, key, salt);
<p style="margin: 10px 0 0 0"> // Get subject<br /> userSubject = requestContext.getUserSession().getSubject();</p>
<p style="margin: 10px 0 0 0"> // Get credentials<br /> i = userSubject.getPrivateCredentials(edu.internet2.middleware.shibboleth.idp.authn.provider.UsernamePasswordCredential).iterator();</p>
<p style="margin: 10px 0 0 0"> while ( i.hasNext() ) </p> { // Set password credential = i.next(); encrypted = ec.doFinal(credential.getPassword().getBytes("UTF8")); password.getValues().add(Base64.encodeBytes(encrypted)); }
<p style="margin: 10px 0 0 0"> }<br /> ]]><br /> </ad:Script><br /> </resolver:AttributeDefinition>}}</p>
<p style="margin: 10px 0 0 0">It's inspired by this SWITCH document (which contains an example without encryption):<br /> <a href="https://www.switch.ch/aai/support/presentations/opcom-200909/AAI-OpCom-Password-as-attribute.pdf" class="external-link" rel="nofollow" style="color: #3b73af; text-decoration: none">https://www.switch.ch/aai/support/presentations/opcom-200909/AAI-OpCom-Password-as-attribute.pdf</a></p>
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