Document how strings are converted to bytes for digest

git-svn-id: https://svn.apache.org/repos/asf/commons/proper/codec/trunk@1493409 13f79535-47bb-0310-9956-ffa450edef68

Author: sebbASF

src/main/java/org/apache/commons/codec/digest/DigestUtils.java

@@ -203,7 +203,7 @@ public static byte[] md2(final InputStream data) throws IOException {
      * Calculates the MD2 digest and returns the value as a 16 element <code>byte[]</code>.
      *
      * @param data
-     *            Data to digest
+     *            Data to digest; converted to bytes using {@link StringUtils#getBytesUtf8(String)}
      * @return MD2 digest
      * @since 1.7
      */
@@ -278,7 +278,7 @@ public static byte[] md5(final InputStream data) throws IOException {
      * Calculates the MD5 digest and returns the value as a 16 element <code>byte[]</code>.
      *
      * @param data
-     *            Data to digest
+     *            Data to digest; converted to bytes using {@link StringUtils#getBytesUtf8(String)}
      * @return MD5 digest
      */
     public static byte[] md5(final String data) {
@@ -393,7 +393,7 @@ public static byte[] sha1(final InputStream data) throws IOException {
      * Calculates the SHA-1 digest and returns the value as a <code>byte[]</code>.
      *
      * @param data
-     *            Data to digest
+     *            Data to digest; converted to bytes using {@link StringUtils#getBytesUtf8(String)}
      * @return SHA-1 digest
      */
     public static byte[] sha1(final String data) {
@@ -477,7 +477,7 @@ public static byte[] sha256(final InputStream data) throws IOException {
      * </p>
      *
      * @param data
-     *            Data to digest
+     *            Data to digest; converted to bytes using {@link StringUtils#getBytesUtf8(String)}
      * @return SHA-256 digest
      * @since 1.4
      */
@@ -571,7 +571,7 @@ public static byte[] sha384(final InputStream data) throws IOException {
      * </p>
      *
      * @param data
-     *            Data to digest
+     *            Data to digest; converted to bytes using {@link StringUtils#getBytesUtf8(String)}
      * @return SHA-384 digest
      * @since 1.4
      */
@@ -665,7 +665,7 @@ public static byte[] sha512(final InputStream data) throws IOException {
      * </p>
      *
      * @param data
-     *            Data to digest
+     *            Data to digest; converted to bytes using {@link StringUtils#getBytesUtf8(String)}
      * @return SHA-512 digest
      * @since 1.4
      */
@@ -807,7 +807,7 @@ public static MessageDigest updateDigest(final MessageDigest digest, final Input
      * @param messageDigest
      *            the {@link MessageDigest} to update
      * @param valueToDigest
-     *            the value to update the {@link MessageDigest} with
+     *            the value to update the {@link MessageDigest} with; converted to bytes using {@link StringUtils#getBytesUtf8(String)}
      * @return the updated {@link MessageDigest}
      * @since 1.7
      */