Reset the KeyAgreement object so that it can be reused.

Signed-off-by: Zainab Fatmi <[email protected]>

Author: Zainab Fatmi

closed/src/jdk.crypto.ec/share/classes/sun/security/ec/NativeECDHKeyAgreement.java

@@ -164,8 +164,7 @@ protected Key engineDoPhase(Key key, boolean lastPhase)
         /* attempt to translate the key if it is not an ECKey */
         this.publicKey = (ECPublicKeyImpl) ECKeyFactory.toECKey(key);
 
-        ECParameterSpec params = this.publicKey.getParams();
-        int keyLenBits = params.getCurve().getField().getFieldSize();
+        int keyLenBits = this.publicKey.getParams().getCurve().getField().getFieldSize();
         this.secretLen = (keyLenBits + 7) >> 3;
 
         return null;
@@ -228,6 +227,7 @@ protected int engineGenerateSecret(byte[] sharedSecret, int offset)
         if (ret == -1) {
             throw new ProviderException("Could not derive key");
         }
+        this.publicKey = null;
         return this.secretLen;
     }