make getSignId a secret key operation, and respect unavailable keys

This one should remedy #811, but waiting for a test

1 files changed, 6 insertions, 0 deletions

diff --git a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java
index 8fb3402b2..3539a4ceb 100644
--- a/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java
+++ b/OpenKeychain/src/main/java/org/sufficientlysecure/keychain/pgp/CanonicalizedPublicKey.java
@@ -104,4 +104,10 @@ public class CanonicalizedPublicKey extends UncachedPublicKey {
     public Integer getKeyUsage() {
         return super.getKeyUsage();
     }
+
+    /** Returns whether this key is valid, ie not expired or revoked. */
+    public boolean isValid() {
+        return !isRevoked() && !isExpired();
+    }
+
 }