feat(utils): add RFC7636 (Outh2 PKCE) implementation

1 files changed, 68 insertions, 0 deletions

diff --git a/eaaf_core_utils/src/test/java/at/gv/egiz/eaaf/core/test/utils/Rfc7636UtilsTest.java b/eaaf_core_utils/src/test/java/at/gv/egiz/eaaf/core/test/utils/Rfc7636UtilsTest.java
new file mode 100644
index 00000000..3bedf3d0
--- /dev/null
+++ b/eaaf_core_utils/src/test/java/at/gv/egiz/eaaf/core/test/utils/Rfc7636UtilsTest.java
@@ -0,0 +1,68 @@
+package at.gv.egiz.eaaf.core.test.utils;
+
+import static org.junit.Assert.assertEquals;
+import static org.junit.Assert.assertFalse;
+import static org.junit.Assert.assertNotNull;
+import static org.junit.Assert.assertTrue;
+
+import org.apache.commons.lang3.RandomStringUtils;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.junit.runners.BlockJUnit4ClassRunner;
+
+import at.gv.egiz.eaaf.core.impl.utils.Rfc7636Utils;
+import at.gv.egiz.eaaf.core.impl.utils.Rfc7636Utils.Method;
+import at.gv.egiz.eaaf.core.impl.utils.Rfc7636Utils.PkceInfo;
+import lombok.SneakyThrows;
+
+@RunWith(BlockJUnit4ClassRunner.class)
+public class Rfc7636UtilsTest {
+
+  @Test
+  @SneakyThrows
+  public void generateS256() {
+    PkceInfo infos = Rfc7636Utils.getInstance().generate();
+    assertNotNull(infos);
+    assertEquals("S256", infos.getMethod());
+    assertEquals(Method.S256, infos.getCodeMethod());
+    assertNotNull(infos.getCodeChallenge());
+    assertNotNull(infos.getCodeVerifier());
+    assertTrue(Rfc7636Utils.getInstance().verify(infos));
+  }
+
+  @Test
+  @SneakyThrows
+  public void generatePlain() {
+    PkceInfo infos = Rfc7636Utils.getInstance().generate(Method.PLAIN);
+    assertNotNull(infos);
+    assertEquals("PLAIN", infos.getMethod());
+    assertEquals(Method.PLAIN, infos.getCodeMethod());
+    assertTrue(Rfc7636Utils.getInstance().verify(infos));
+
+  }
+
+  @Test
+  @SneakyThrows
+  public void verifyInvalid() {
+    PkceInfo infos = PkceInfo.builder()
+        .codeMethod(Method.S256)
+        .codeVerifier(RandomStringUtils.randomAlphabetic(10))
+        .codeChallenge(RandomStringUtils.randomAlphabetic(10))
+        .build();
+    assertFalse(Rfc7636Utils.getInstance().verify(infos));
+
+  }
+
+  @Test
+  @SneakyThrows
+  public void verifyRfc7636TestVector() {
+    PkceInfo infos = PkceInfo.builder()
+        .codeMethod(Method.S256)
+        .codeVerifier("dBjftJeZ4CVP-mB92K27uhbUJU1p1r_wW1gFWFOEjXk")
+        .codeChallenge("E9Melhoa2OwvFrEMTJguCHaoeK1t8URWbuGJSstw-cM")
+        .build();
+    assertTrue(Rfc7636Utils.getInstance().verify(infos));
+
+  }
+
+}