* Router: Add a keyring for decrypting leases

* Routerconsole: Add configkeyring.jsp

apps/routerconsole/java/src/net/i2p/router/web/ConfigKeyringHandler.java

@@ -0,0 +1,55 @@
+package net.i2p.router.web;
+
+import net.i2p.I2PAppContext;
+import net.i2p.data.DataFormatException;
+import net.i2p.data.Destination;
+import net.i2p.data.Hash;
+import net.i2p.data.SessionKey;
+
+/**
+ *  Support additions via B64 Destkey, B64 Desthash, or blahblah.i2p
+ */
+public class ConfigKeyringHandler extends FormHandler {
+    private String _peer;
+    private String _key;
+    
+    protected void processForm() {
+        if ("Add key".equals(_action)) {
+            if (_peer == null || _key == null) {
+                addFormError("You must enter a destination and a key");
+                return;
+            }
+            Hash h = new Hash();
+            try {
+                h.fromBase64(_peer);
+            } catch (DataFormatException dfe) {}
+            if (h.getData() == null) {
+                try {
+                    Destination d = new Destination();
+                    d.fromBase64(_peer);
+                    h = d.calculateHash();
+                } catch (DataFormatException dfe) {}
+            }
+            if (h.getData() == null) {
+                Destination d = _context.namingService().lookup(_peer);
+                if (d != null)
+                    h = d.calculateHash();
+            }
+            SessionKey sk = new SessionKey();
+            try {
+                sk.fromBase64(_key);
+            } catch (DataFormatException dfe) {}
+            if (h.getData() != null && sk.getData() != null) {
+                _context.keyRing().put(h, sk);
+                addFormNotice("Key for " + h.toBase64() + " added to keyring");
+            } else {
+                addFormError("Invalid destination or key");
+            }
+        } else {
+            addFormError("Unsupported");
+        }
+    }
+
+    public void setPeer(String peer) { _peer = peer; }
+    public void setKey(String peer) { _key = peer; }
+}