diff -r 6856e071d25a -r d0aadddb9c64 MYPublicKey.m
--- a/MYPublicKey.m	Tue Jun 09 23:58:03 2009 -0700
+++ b/MYPublicKey.m	Tue Jul 21 10:13:08 2009 -0700
@@ -16,6 +16,11 @@
 #import <CommonCrypto/CommonDigest.h>
 
 
+@interface MYPublicKey ()
+@property (retain) MYCertificate *certificate;
+@end
+
+
 #pragma mark -
 @implementation MYPublicKey
 
@@ -35,6 +40,8 @@
     [super dealloc];
 }
 
+@synthesize certificate=_certificate;
+
 - (SecExternalItemType) keyClass {
 #if MYCRYPTO_USE_IPHONE_API
     return kSecAttrKeyClassPublic;
@@ -63,6 +70,16 @@
     return _digest;
 }
 
+#if MYCRYPTO_USE_IPHONE_API
+- (NSData*) keyData {
+    if (_certificate) {
+        return _certificate.info.subjectPublicKeyData;
+    } else {
+        return [super keyData];
+    }
+}
+#endif
+
 #if !MYCRYPTO_USE_IPHONE_API
 - (SecExternalFormat) _externalFormat {
     return kSecFormatBSAFE;