carlos 32591786d9 MDL-66920 mod_lti: Allow usage of both JWKS URI and Public Key
- Changed mod_lti edit_form.php to add necessary fields.
- Added configuration field 'keytype' that can be RSA_KEY or JWK_KEYSET, defaulting to RSA_KEY if none is found.
- Changed mod_lti locallib.php to add the usage of jwk in the verifications of jwt's.
- Changed mod_lti token.php to call the verification function from locallib.php.
- Caches the keyset endpoint content of any given lti tool.
- Updated language files to accommodate new functionalities.
- Added test method for JWK functionalities.
- Added test_keyset file in the fixtures folder.
- Bumped the mod_lti version to 2020022200.
2020-04-16 08:53:53 -03:00
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