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authorupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
committerupstream source tree <ports@midipix.org>2015-03-15 20:14:05 -0400
commit554fd8c5195424bdbcabf5de30fdc183aba391bd (patch)
tree976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/gnu/gcj/io/SimpleSHSStream.java
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Diffstat (limited to 'libjava/gnu/gcj/io/SimpleSHSStream.java')
-rw-r--r--libjava/gnu/gcj/io/SimpleSHSStream.java66
1 files changed, 66 insertions, 0 deletions
diff --git a/libjava/gnu/gcj/io/SimpleSHSStream.java b/libjava/gnu/gcj/io/SimpleSHSStream.java
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+++ b/libjava/gnu/gcj/io/SimpleSHSStream.java
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+// SimpleSHSStream.java
+
+/* Copyright (C) 2000 Free Software Foundation
+
+ This file is part of libgcj.
+
+This software is copyrighted work licensed under the terms of the
+Libgcj License. Please consult the file "LIBGCJ_LICENSE" for
+details. */
+
+package gnu.gcj.io;
+import java.io.Serializable;
+import java.io.*;
+import java.lang.reflect.*;
+
+public class SimpleSHSStream extends java.io.DataOutputStream
+{
+ int counter;
+
+ final int SHS_BLOCKSIZE = 64;
+ final int SHS_DIGESTSIZE = 20;
+
+ byte buf[];
+ byte shs_info[];
+
+ native static byte [] shsFinal (byte info[]);
+ native static void shsUpdate (byte info[], byte buf[], int count);
+ native static byte [] shsInit ();
+
+ private void update (byte b)
+ {
+ buf [counter++] = b;
+ if (counter % SHS_BLOCKSIZE == 0)
+ {
+ counter = 0;
+ shsUpdate (shs_info, buf, SHS_BLOCKSIZE);
+ }
+ }
+
+ public void write (int b) throws IOException
+ {
+ update ((byte)b);
+ super.write (b);
+ }
+
+ public void write (byte[] b, int off, int len) throws IOException
+ {
+ for (int i = 0; i < len; i++)
+ write (b[i+off]);
+ }
+
+ public byte[] digest()
+ {
+ shsUpdate (shs_info, buf, counter);
+ return shsFinal (shs_info);
+ }
+
+ public SimpleSHSStream (OutputStream out)
+ {
+ super (out);
+ buf = new byte[SHS_BLOCKSIZE];
+ shs_info = shsInit ();
+ counter = 0;
+ }
+}
+