1 files changed, 53 insertions, 0 deletions
diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CachedPublicKey.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CachedPublicKey.java
new file mode 100644
index 000000000..fb065c85f
--- /dev/null
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CachedPublicKey.java
@@ -0,0 +1,53 @@
+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;
+
+public class CachedPublicKey {
+
+    // this is the parent key ring
+    private final CachedPublicKeyRing mRing;
+
+    private final PGPPublicKey mKey;
+
+    CachedPublicKey(CachedPublicKeyRing ring, PGPPublicKey key) {
+        mRing = ring;
+        mKey = key;
+    }
+
+    public CachedPublicKeyRing getKeyRing() {
+        return mRing;
+    }
+
+    JcePublicKeyKeyEncryptionMethodGenerator getPubKeyEncryptionGenerator() {
+        return  new JcePublicKeyKeyEncryptionMethodGenerator(mKey);
+    }
+
+    public void initSignature(PGPSignature sig) throws PGPException {
+        JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
+                new JcaPGPContentVerifierBuilderProvider()
+                        .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
+        sig.init(contentVerifierBuilderProvider, mKey);
+    }
+
+    public void initSignature(PGPOnePassSignature sig) throws PGPException {
+        JcaPGPContentVerifierBuilderProvider contentVerifierBuilderProvider =
+                new JcaPGPContentVerifierBuilderProvider()
+                        .setProvider(Constants.BOUNCY_CASTLE_PROVIDER_NAME);
+        sig.init(contentVerifierBuilderProvider, mKey);
+    }
+
+    public byte[] getFingerprint() {
+        return mKey.getFingerprint();
+    }
+
+    // Note that this method has package visibility - no access outside the pgp package!
+    PGPPublicKey getKey() {
+        return mKey;
+    }
+}