* Migrate array utils to non-static

* Migrate attribute utils to non-static

* Migrate auth utils to non-static

* Migrate config utils to non-static

* Migrate crypto utils to non-static

* Raise coverage

* Fix rebase issue

* Raise minimum PHP version to 7.0

* Remove tests pre-PHP 7.2

* Upgrade dev dependencies

* Ignore tests for deprecated class

* Add typehints; not touching public API

* Remove none-array replacements-param; old behaviour from pre-1.4 release

* Psalm fixes

* Add upgrade notes

* PSR-12

PSR-12 compliancy

metadata: Make the documentid a hash over the document contents, so it does not change on every page load

SHA-1 is still supported but needs to be configured explicitly if you need it.

Now we are finally using the 2.x branch of the SAML2 library, which was also migrated to use namespaces. Even though the library provides an autoloader that allows loading the classes with the old names using class aliasing, we need to do the migration in one commit (at least for most part of it). This is due to the way SimpleSAMLphp checks data types, using inheritance to check objects agains abstract or more general classes. Even though class aliasing works, there's no way to replicate those relationships, and type checks that use the old class names will fail because the aliases are virtually new classes that don't inherit from others.

The hash algorithm to use to calculate signature digests for self metadata was not configurable. Add the 'metadata.sign.algorithm' configuration option to fix that.

This resolves #411.

Move SimpleSAML_Utilities::resolveCert() to SimpleSAML\Utils\Config::getCertPath() and deprecate the former.

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@3364 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@2237 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@1665 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@613 44740490-163a-0410-bde0-09ae8108e29a

git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@610 44740490-163a-0410-bde0-09ae8108e29a

This patch adds metadata signing. It can be enabled globally by setting
the 'metadata.sign.enable' global option, or per SP/IdP by setting
the same option in the metadata of the SP/IdP.

To sign the metadata, both a private key and a certificate is used. The
following configuration options determine which key and certificate files
will be used:

- per SP/IdP metadata:
  'metadata.sign.privatekey' & 'metadata.sign.certificate'
- globally:
  'metadata.sign.privatekey' & 'metadata.sign.certificate'
- per SP/IdP metadata: (fallback)
  'privatekey' & 'certificate'


git-svn-id: https://simplesamlphp.googlecode.com/svn/trunk@593 44740490-163a-0410-bde0-09ae8108e29a