diff --git a/src/fr/anssi/smartpgp/Constants.java b/src/fr/anssi/smartpgp/Constants.java
index 2152fb4..8281433 100644
--- a/src/fr/anssi/smartpgp/Constants.java
+++ b/src/fr/anssi/smartpgp/Constants.java
@@ -98,6 +98,7 @@ public final class Constants {
     protected static final short TAG_GENERATION_DATE_SIG = (short)0x00ce;
     protected static final short TAG_GENERATION_DATE_DEC = (short)0x00cf;
     protected static final short TAG_GENERATION_DATE_AUT = (short)0x00d0;
+    protected static final short TAG_KEY_INFORMATION = (short)0x00de;
     protected static final short TAG_RESETTING_CODE = (short)0x00d3;
     protected static final short TAG_EXTENDED_LENGTH_INFORMATION = (short)0x7f66;
     protected static final short TAG_PRIVATE_DO_0101 = (short)0x0101;
diff --git a/src/fr/anssi/smartpgp/PGPKey.java b/src/fr/anssi/smartpgp/PGPKey.java
index dc1e285..8fba9c8 100644
--- a/src/fr/anssi/smartpgp/PGPKey.java
+++ b/src/fr/anssi/smartpgp/PGPKey.java
@@ -37,6 +37,8 @@ public final class PGPKey {
     protected final byte[] attributes;
     protected byte attributes_length;
 
+    private boolean has_been_generated;
+
     private KeyPair keys;
 
     private final Cipher cipher_rsa_pkcs1;
@@ -71,6 +73,8 @@ public final class PGPKey {
 
         fingerprint.reset(isRegistering);
 
+        has_been_generated = false;
+
         Util.arrayFillNonAtomic(generation_date, (short)0, Constants.GENERATION_DATE_SIZE, (byte)0);
     }
 
@@ -94,6 +98,18 @@ public final class PGPKey {
         return (keys != null) && keys.getPrivate().isInitialized() && keys.getPublic().isInitialized();
     }
 
+    protected final byte keyInformation() {
+        byte res = (byte)0x0;
+        if(isInitialized()) {
+            if(has_been_generated) {
+                res = (byte)0x01;
+            } else {
+                res = (byte)0x02;
+            }
+        }
+        return res;
+    }
+
     protected final void setCertificate(final byte[] buf, final short off, final short len) {
         if((len < 0) ||
            (len > Constants.cardholderCertificateMaxLength())) {
@@ -203,7 +219,7 @@ public final class PGPKey {
         }
 
         resetKeys(false);
-
+        has_been_generated = true;
         keys = nkeys;
     }
 
diff --git a/src/fr/anssi/smartpgp/SmartPGPApplet.java b/src/fr/anssi/smartpgp/SmartPGPApplet.java
index c47870f..1977fac 100644
--- a/src/fr/anssi/smartpgp/SmartPGPApplet.java
+++ b/src/fr/anssi/smartpgp/SmartPGPApplet.java
@@ -428,6 +428,17 @@ public final class SmartPGPApplet extends Applet {
                                           k.certificate_length);
             break;
 
+        case Constants.TAG_KEY_INFORMATION:
+            buf[off++] = (byte)0xde;
+            buf[off++] = (byte)0x06; /* len */
+            buf[off++] = (byte)0x01;
+            buf[off++] = data.pgp_keys[Persistent.PGP_KEYS_OFFSET_SIG].keyInformation();
+            buf[off++] = (byte)0x02;
+            buf[off++] = data.pgp_keys[Persistent.PGP_KEYS_OFFSET_DEC].keyInformation();
+            buf[off++] = (byte)0x03;
+            buf[off++] = data.pgp_keys[Persistent.PGP_KEYS_OFFSET_AUT].keyInformation();
+            break;
+
         case Constants.TAG_KEY_DERIVATION_FUNCTION:
             off = Util.arrayCopyNonAtomic(data.key_derivation_function, (short)0,
                                           buf, off,