src/java.base/share/classes/java/security/MessageDigest.java

*** 30,44 ****
  import java.io.IOException;
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.io.InputStream;
  import java.io.ByteArrayInputStream;
! 
  import java.nio.ByteBuffer;
  
  import sun.security.util.Debug;
  
  /**
   * This MessageDigest class provides applications the functionality of a
   * message digest algorithm, such as SHA-1 or SHA-256.
   * Message digests are secure one-way hash functions that take arbitrary-sized
   * data and output a fixed-length hash value.
--- 30,47 ----
  import java.io.IOException;
  import java.io.ByteArrayOutputStream;
  import java.io.PrintStream;
  import java.io.InputStream;
  import java.io.ByteArrayInputStream;
! import java.security.InvalidKeyException;
  import java.nio.ByteBuffer;
  
  import sun.security.util.Debug;
+ import sun.security.util.MessageDigestSpi2;
  
+ import javax.crypto.SecretKey;
+ 
  /**
   * This MessageDigest class provides applications the functionality of a
   * message digest algorithm, such as SHA-1 or SHA-256.
   * Message digests are secure one-way hash functions that take arbitrary-sized
   * data and output a fixed-length hash value.
*** 546,556 ****
       * moved up the hierarchy into a new class (MessageDigestSpi), which has
       * been interposed in the hierarchy between the API (MessageDigest)
       * and its original parent (Object).
       */
  
!     static class Delegate extends MessageDigest {
  
          // The provider implementation (delegate)
          private MessageDigestSpi digestSpi;
  
          // constructor
--- 549,559 ----
       * moved up the hierarchy into a new class (MessageDigestSpi), which has
       * been interposed in the hierarchy between the API (MessageDigest)
       * and its original parent (Object).
       */
  
!     static class Delegate extends MessageDigest implements MessageDigestSpi2 {
  
          // The provider implementation (delegate)
          private MessageDigestSpi digestSpi;
  
          // constructor
*** 599,608 ****
--- 602,619 ----
  
          protected void engineUpdate(ByteBuffer input) {
              digestSpi.engineUpdate(input);
          }
  
+         public void engineUpdate(SecretKey key) throws InvalidKeyException {
+             if (digestSpi instanceof MessageDigestSpi2) {
+                 ((MessageDigestSpi2)digestSpi).engineUpdate(key);
+             } else {
+                 throw new UnsupportedOperationException
+                 ("Digest does not support update of SecretKey object");
+             }
+         }
          protected byte[] engineDigest() {
              return digestSpi.engineDigest();
          }
  
          protected int engineDigest(byte[] buf, int offset, int len)