wrapped-key-ring: split up CachedKeyRing and WrappedKeyRing

1 files changed, 62 insertions, 0 deletions

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedPublicKey.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedPublicKey.java
new file mode 100644
index 000000000..72352a451
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/WrappedPublicKey.java
@@ -0,0 +1,62 @@
+package org.sufficientlysecure.keychain.pgp;
+
+import org.spongycastle.openpgp.PGPException;
+import org.spongycastle.openpgp.PGPOnePassSignature;
+import org.spongycastle.openpgp.PGPPublicKey;
+import org.spongycastle.openpgp.PGPSignature;
+import org.spongycastle.openpgp.operator.jcajce.JcaPGPContentVerifierBuilderProvider;
+import org.spongycastle.openpgp.operator.jcajce.JcePublicKeyKeyEncryptionMethodGenerator;
+import org.sufficientlysecure.keychain.Constants;
+import org.sufficientlysecure.keychain.util.IterableIterator;
+
+import java.security.SignatureException;
+
+public class WrappedPublicKey extends UncachedPublicKey {
+
+    // this is the parent key ring
+    final KeyRing mRing;
+
+    WrappedPublicKey(KeyRing ring, PGPPublicKey key) {
+        super(key);
+        mRing = ring;
+    }
+
+    public IterableIterator<String> getUserIds() {
+        return new IterableIterator<String>(mPublicKey.getUserIDs());
+    }
+
+    public KeyRing getKeyRing() {
+        return mRing;
+    }
+
+    JcePublicKeyKeyEncryptionMethodGenerator getPubKeyEncryptionGenerator() {
+        return  new JcePublicKeyKeyEncryptionMethodGenerator(mPublicKey);
+    }
+
+    public void initSignature(PGPSignature sig) throws PGPException {
+        JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
+                new JcaPGPContentVerifierBuilderProvider()
+                        .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
+        sig.init(contentVerifierBuilderProvider, mPublicKey);
+    }
+
+    public void initSignature(PGPOnePassSignature sig) throws PGPException {
+        JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
+                new JcaPGPContentVerifierBuilderProvider()
+                        .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
+        sig.init(contentVerifierBuilderProvider, mPublicKey);
+    }
+
+    /** Verify a signature for this pubkey, after it has been initialized by the signer using
+     * initSignature(). This method should probably move into a wrapped PGPSignature class
+     * at some point.
+     */
+    public boolean verifySignature(PGPSignature sig, String uid) throws PGPException {
+        try {
+            return sig.verifyCertification(uid, mPublicKey);
+        } catch (SignatureException e) {
+            throw new PGPException("Error!", e);
+        }
+    }
+
+}