diff -r 39fec79de6e8 -r 54b373aa65ab MYPrivateKey.m
--- a/MYPrivateKey.m	Sun Jun 07 21:53:56 2009 -0700
+++ b/MYPrivateKey.m	Fri Aug 07 11:24:53 2009 -0700
@@ -178,8 +178,16 @@
 - (MYSHA1Digest*) _keyDigest {
     if (_publicKey)
         return _publicKey.publicKeyDigest;
-    else
-        return [MYSHA1Digest digestFromDigestData: [self _attribute: kSecAttrApplicationLabel]];
+    else {
+        NSData *digestData;
+#if MYCRYPTO_USE_IPHONE_API
+        digestData = [self _attribute: kSecAttrApplicationLabel];
+#else
+        digestData = [[self class] _getAttribute: kSecKeyLabel 
+                                          ofItem: (SecKeychainItemRef)self.keyRef]; 
+#endif
+        return [MYSHA1Digest digestFromDigestData: digestData];
+    }
 }
 
 - (MYSHA1Digest*) publicKeyDigest {