8169080: Improve documentation examples for crypto applications

Reviewed-by: wetmore
Contributed-by: prasadarao.koppula@oracle.com

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

 /*
- * Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -59,7 +59,7 @@ import sun.security.util.Debug;
  * and catching the CloneNotSupportedException:
  *
  * <pre>{@code
- * MessageDigest md = MessageDigest.getInstance("SHA");
+ * MessageDigest md = MessageDigest.getInstance("SHA-256");
  *
  * try {
  *     md.update(toChapter1);
@@ -467,7 +467,7 @@ public abstract class MessageDigest extends MessageDigestSpi {
     /**
      * Returns a string that identifies the algorithm, independent of
      * implementation details. The name should be a standard
-     * Java Security name (such as "SHA", "MD5", and so on).
+     * Java Security name (such as "SHA-256").
      * See the MessageDigest section in the <a href=
      * "{@docRoot}/../technotes/guides/security/StandardNames.html#MessageDigest">
      * Java Cryptography Architecture Standard Algorithm Name Documentation</a>

src/share/classes/java/security/Signature.java

 /*
- * Copyright (c) 1996, 2015, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1996, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -52,11 +52,10 @@ import sun.security.jca.GetInstance.Instance;
  * authentication and integrity assurance of digital data.
  *
  * <p> The signature algorithm can be, among others, the NIST standard
- * DSA, using DSA and SHA-1. The DSA algorithm using the
- * SHA-1 message digest algorithm can be specified as {@code SHA1withDSA}.
- * In the case of RSA, there are multiple choices for the message digest
- * algorithm, so the signing algorithm could be specified as, for example,
- * {@code MD2withRSA}, {@code MD5withRSA}, or {@code SHA1withRSA}.
+ * DSA, using DSA and SHA-256. The DSA algorithm using the
+ * SHA-256 message digest algorithm can be specified as {@code SHA256withDSA}.
+ * In the case of RSA the signing algorithm could be specified as, for example,
+ * {@code SHA256withRSA}.
  * The algorithm name must be specified, as there is no default.
  *
  * <p> A Signature object can be used to generate and verify digital

src/share/classes/java/security/SignedObject.java

 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -81,13 +81,12 @@ import java.io.*;
  * verification in an attempt to bypass a security check.
  *
  * <p> The signature algorithm can be, among others, the NIST standard
- * DSA, using DSA and SHA-1.  The algorithm is specified using the
+ * DSA, using DSA and SHA-256.  The algorithm is specified using the
  * same convention as that for signatures. The DSA algorithm using the
- * SHA-1 message digest algorithm can be specified, for example, as
- * "SHA/DSA" or "SHA-1/DSA" (they are equivalent).  In the case of
- * RSA, there are multiple choices for the message digest algorithm,
- * so the signing algorithm could be specified as, for example,
- * "MD2/RSA", "MD5/RSA" or "SHA-1/RSA".  The algorithm name must be
+ * SHA-256 message digest algorithm can be specified, for example, as
+ * "SHA256withDSA".  In the case of
+ * RSA the signing algorithm could be specified as, for example,
+ * "SHA256withRSA".  The algorithm name must be
  * specified, as there is no default.
  *
  * <p> The name of the Cryptography Package Provider is designated

src/share/classes/javax/crypto/Cipher.java

 /*
- * Copyright (c) 1997, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -59,7 +59,7 @@ import sun.security.jca.*;
  * <p>A <i>transformation</i> is a string that describes the operation (or
  * set of operations) to be performed on the given input, to produce some
  * output. A transformation always includes the name of a cryptographic
- * algorithm (e.g., <i>DES</i>), and may be followed by a feedback mode and
+ * algorithm (e.g., <i>AES</i>), and may be followed by a feedback mode and
  * padding scheme.
  *
  * <p> A transformation is of the form:
@@ -75,17 +75,16 @@ import sun.security.jca.*;
  * For example, the following is a valid transformation:
  *
  * <pre>
- *     Cipher c = Cipher.getInstance("<i>DES/CBC/PKCS5Padding</i>");
+ *     Cipher c = Cipher.getInstance("<i>AES/CBC/PKCS5Padding</i>");
  * </pre>
  *
  * Using modes such as <code>CFB</code> and <code>OFB</code>, block
  * ciphers can encrypt data in units smaller than the cipher's actual
  * block size.  When requesting such a mode, you may optionally specify
  * the number of bits to be processed at a time by appending this number
- * to the mode name as shown in the "<code>DES/CFB8/NoPadding</code>" and
- * "<code>DES/OFB32/PKCS5Padding</code>" transformations. If no such
- * number is specified, a provider-specific default is used. (For
- * example, the SunJCE provider uses a default of 64 bits for DES.)
+ * to the mode name as shown in the "{@code AES/CFB8/NoPadding}" and
+ * "{@code AES/OFB32/PKCS5Padding}" transformations. If no such
+ * number is specified, a provider-specific default is used.
  * Thus, block ciphers can be turned into byte-oriented stream ciphers by
  * using an 8 bit mode such as CFB8 or OFB8.
  * <p>
@@ -307,7 +306,7 @@ public class Cipher {
         /*
          * array containing the components of a Cipher transformation:
          *
-         * index 0: algorithm component (e.g., DES)
+         * index 0: algorithm component (e.g., AES)
          * index 1: feedback component (e.g., CFB)
          * index 2: padding component (e.g., PKCS5Padding)
          */
@@ -353,8 +352,8 @@ public class Cipher {
         // transform string to lookup in the provider
         final String transform;
         // the mode/padding suffix in upper case. for example, if the algorithm
-        // to lookup is "DES/CBC/PKCS5Padding" suffix is "/CBC/PKCS5PADDING"
-        // if loopup is "DES", suffix is the empty string
+        // to lookup is "AES/CBC/PKCS5Padding" suffix is "/CBC/PKCS5PADDING"
+        // if lookup is "AES", suffix is the empty string
         // needed because aliases prevent straight transform.equals()
         final String suffix;
         // value to pass to setMode() or null if no such call required
@@ -439,11 +438,11 @@ public class Cipher {
         }
 
         if ((mode == null) && (pad == null)) {
-            // DES
+            // AES
             Transform tr = new Transform(alg, "", null, null);
             return Collections.singletonList(tr);
         } else { // if ((mode != null) && (pad != null)) {
-            // DES/CBC/PKCS5Padding
+            // AES/CBC/PKCS5Padding
             List<Transform> list = new ArrayList<>(4);
             list.add(new Transform(alg, "/" + mode + "/" + pad, null, null));
             list.add(new Transform(alg, "/" + mode, null, pad));
@@ -479,7 +478,7 @@ public class Cipher {
      * the {@link Security#getProviders() Security.getProviders()} method.
      *
      * @param transformation the name of the transformation, e.g.,
-     * <i>DES/CBC/PKCS5Padding</i>.
+     * <i>AES/CBC/PKCS5Padding</i>.
      * See the Cipher section in the <a href=
      *   "{@docRoot}/../technotes/guides/security/StandardNames.html#Cipher">
      * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
@@ -554,7 +553,7 @@ public class Cipher {
      * the {@link Security#getProviders() Security.getProviders()} method.
      *
      * @param transformation the name of the transformation,
-     * e.g., <i>DES/CBC/PKCS5Padding</i>.
+     * e.g., <i>AES/CBC/PKCS5Padding</i>.
      * See the Cipher section in the <a href=
      *   "{@docRoot}/../technotes/guides/security/StandardNames.html#Cipher">
      * Java Cryptography Architecture Standard Algorithm Name Documentation</a>
@@ -606,7 +605,7 @@ public class Cipher {
      * does not have to be registered in the provider list.
      *
      * @param transformation the name of the transformation,
-     * e.g., <i>DES/CBC/PKCS5Padding</i>.
+     * e.g., <i>AES/CBC/PKCS5Padding</i>.
      * See the Cipher section in the <a href=
      *   "{@docRoot}/../technotes/guides/security/StandardNames.html#Cipher">
      * Java Cryptography Architecture Standard Algorithm Name Documentation</a>

src/share/classes/javax/crypto/CipherSpi.java

 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -59,7 +59,7 @@ import java.nio.ByteBuffer;
  * <p>A <i>transformation</i> is a string that describes the operation (or
  * set of operations) to be performed on the given input, to produce some
  * output. A transformation always includes the name of a cryptographic
- * algorithm (e.g., <i>DES</i>), and may be followed by a feedback mode and
+ * algorithm (e.g., <i>AES</i>), and may be followed by a feedback mode and
  * padding scheme.
  *
  * <p> A transformation is of the form:
@@ -75,7 +75,7 @@ import java.nio.ByteBuffer;
  * For example, the following is a valid transformation:
  *
  * <pre>
- *     Cipher c = Cipher.getInstance("<i>DES/CBC/PKCS5Padding</i>");
+ *     Cipher c = Cipher.getInstance("<i>AES/CBC/PKCS5Padding</i>");
  * </pre>
  *
  * <p>A provider may supply a separate class for each combination
@@ -125,32 +125,32 @@ import java.nio.ByteBuffer;
  * </ul>
  *
  * <p>For example, a provider may supply a subclass of <code>CipherSpi</code>
- * that implements <i>DES/ECB/PKCS5Padding</i>, one that implements
- * <i>DES/CBC/PKCS5Padding</i>, one that implements
- * <i>DES/CFB/PKCS5Padding</i>, and yet another one that implements
- * <i>DES/OFB/PKCS5Padding</i>. That provider would have the following
+ * that implements <i>AES/ECB/PKCS5Padding</i>, one that implements
+ * <i>AES/CBC/PKCS5Padding</i>, one that implements
+ * <i>AES/CFB/PKCS5Padding</i>, and yet another one that implements
+ * <i>AES/OFB/PKCS5Padding</i>. That provider would have the following
  * <code>Cipher</code> properties in its master class:
  *
  * <ul>
  *
  * <li>
  * <pre>
- *     <code>Cipher.</code><i>DES/ECB/PKCS5Padding</i>
+ *     <code>Cipher.</code><i>AES/ECB/PKCS5Padding</i>
  * </pre>
  *
  * <li>
  * <pre>
- *     <code>Cipher.</code><i>DES/CBC/PKCS5Padding</i>
+ *     <code>Cipher.</code><i>AES/CBC/PKCS5Padding</i>
  * </pre>
  *
  * <li>
  * <pre>
- *     <code>Cipher.</code><i>DES/CFB/PKCS5Padding</i>
+ *     <code>Cipher.</code><i>AES/CFB/PKCS5Padding</i>
  * </pre>
  *
  * <li>
  * <pre>
- *     <code>Cipher.</code><i>DES/OFB/PKCS5Padding</i>
+ *     <code>Cipher.</code><i>AES/OFB/PKCS5Padding</i>
  * </pre>
  *
  * </ul>
@@ -158,7 +158,7 @@ import java.nio.ByteBuffer;
  * <p>Another provider may implement a class for each of the above modes
  * (i.e., one class for <i>ECB</i>, one for <i>CBC</i>, one for <i>CFB</i>,
  * and one for <i>OFB</i>), one class for <i>PKCS5Padding</i>,
- * and a generic <i>DES</i> class that subclasses from <code>CipherSpi</code>.
+ * and a generic <i>AES</i> class that subclasses from <code>CipherSpi</code>.
  * That provider would have the following
  * <code>Cipher</code> properties in its master class:
  *
@@ -166,7 +166,7 @@ import java.nio.ByteBuffer;
  *
  * <li>
  * <pre>
- *     <code>Cipher.</code><i>DES</i>
+ *     <code>Cipher.</code><i>AES</i>
  * </pre>
  *
  * </ul>

src/share/classes/javax/crypto/Mac.java

 /*
- * Copyright (c) 1998, 2014, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1998, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -50,7 +50,7 @@ import sun.security.jca.GetInstance.Instance;
  *
  * <p> A MAC mechanism that is based on cryptographic hash functions is
  * referred to as HMAC. HMAC can be used with any cryptographic hash function,
- * e.g., MD5 or SHA-1, in combination with a secret shared key. HMAC is
+ * e.g., SHA256 or SHA384, in combination with a secret shared key. HMAC is
  * specified in RFC 2104.
  *
  * <p> Every implementation of the Java platform is required to support

src/share/classes/javax/crypto/SealedObject.java

 /*
- * Copyright (c) 1997, 2013, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 1997, 2017, Oracle and/or its affiliates. All rights reserved.
  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
  *
  * This code is free software; you can redistribute it and/or modify it
@@ -40,7 +40,7 @@ import java.security.NoSuchProviderException;
  * <p> Given any Serializable object, one can create a SealedObject
  * that encapsulates the original object, in serialized
  * format (i.e., a "deep copy"), and seals (encrypts) its serialized contents,
- * using a cryptographic algorithm such as DES, to protect its
+ * using a cryptographic algorithm such as AES, to protect its
  * confidentiality.  The encrypted content can later be decrypted (with
  * the corresponding algorithm using the correct decryption key) and
  * de-serialized, yielding the original object.