Allow JWT from string

Author: bitwiseman

src/main/java/org/kohsuke/github/extras/authorization/JWTTokenProvider.java

@@ -42,11 +42,15 @@ public class JWTTokenProvider implements AuthorizationProvider {
     private final String applicationId;
 
     public JWTTokenProvider(String applicationId, File keyFile) throws GeneralSecurityException, IOException {
-        this(applicationId, loadPrivateKey(keyFile.toPath()));
+        this(applicationId, keyFile.toPath());
     }
 
     public JWTTokenProvider(String applicationId, Path keyPath) throws GeneralSecurityException, IOException {
-        this(applicationId, loadPrivateKey(keyPath));
+        this(applicationId, new String(Files.readAllBytes(keyPath), StandardCharsets.UTF_8));
+    }
+
+    public JWTTokenProvider(String applicationId, String keyString) throws GeneralSecurityException {
+        this(applicationId, getPrivateKeyFromString(keyString));
     }
 
     public JWTTokenProvider(String applicationId, PrivateKey privateKey) {
@@ -64,18 +68,6 @@ public String getEncodedAuthorization() throws IOException {
         }
     }
 
-    /**
-     * add dependencies for a jwt suite You can generate a key to load in this method with:
-     *
-     * <pre>
-     * openssl pkcs8 -topk8 -inform PEM -outform DER -in ~/github-api-app.private-key.pem -out ~/github-api-app.private-key.der -nocrypt
-     * </pre>
-     */
-    private static PrivateKey loadPrivateKey(Path keyPath) throws GeneralSecurityException, IOException {
-        String keyString = new String(Files.readAllBytes(keyPath), StandardCharsets.UTF_8);
-        return getPrivateKeyFromString(keyString);
-    }
-
     /**
      * Convert a PKCS#8 formatted private key in string format into a java PrivateKey
      *

src/test/java/org/kohsuke/github/AbstractGHAppInstallationTest.java

@@ -7,6 +7,8 @@
 
 import java.io.File;
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
+import java.nio.file.Files;
 import java.security.GeneralSecurityException;
 import java.security.KeyFactory;
 import java.security.PrivateKey;
@@ -34,9 +36,12 @@ public class AbstractGHAppInstallationTest extends AbstractGitHubWireMockTest {
             JWT_PROVIDER_1 = new JWTTokenProvider(TEST_APP_ID_1,
                     new File(this.getClass().getResource(PRIVATE_KEY_FILE_APP_1).getFile()));
             JWT_PROVIDER_2 = new JWTTokenProvider(TEST_APP_ID_2,
-                    new File(this.getClass().getResource(PRIVATE_KEY_FILE_APP_2).getFile()));
+                    new File(this.getClass().getResource(PRIVATE_KEY_FILE_APP_2).getFile()).toPath());
             JWT_PROVIDER_3 = new JWTTokenProvider(TEST_APP_ID_3,
-                    new File(this.getClass().getResource(PRIVATE_KEY_FILE_APP_3).getFile()));
+                    new String(
+                            Files.readAllBytes(
+                                    new File(this.getClass().getResource(PRIVATE_KEY_FILE_APP_3).getFile()).toPath()),
+                            StandardCharsets.UTF_8));
         } catch (GeneralSecurityException | IOException e) {
             throw new RuntimeException("These should never fail", e);
         }