From 78172a10165a969b8c002b6bdcf9dc47fa6cd5f3 Mon Sep 17 00:00:00 2001
From: Arne Schwabe <arne@rfc2549.org>
Date: Thu, 28 Jun 2012 19:33:05 +0200
Subject: The 'be ready for Jelly Beans' commit - fix concurrentaccess occuring
 on JB - JB does not allow to extract the private keys from the key storage,
 rewrite using the key storage to use JAVA API and the external-key management
 interface

---
 src/org/spongycastle/util/encoders/Base64.java | 121 +++++++++++++++++++++++++
 1 file changed, 121 insertions(+)
 create mode 100644 src/org/spongycastle/util/encoders/Base64.java

(limited to 'src/org/spongycastle/util/encoders/Base64.java')

diff --git a/src/org/spongycastle/util/encoders/Base64.java b/src/org/spongycastle/util/encoders/Base64.java
new file mode 100644
index 00000000..87bd80a0
--- /dev/null
+++ b/src/org/spongycastle/util/encoders/Base64.java
@@ -0,0 +1,121 @@
+package org.spongycastle.util.encoders;
+
+import java.io.ByteArrayOutputStream;
+import java.io.IOException;
+import java.io.OutputStream;
+
+public class Base64
+{
+    private static final Encoder encoder = new Base64Encoder();
+    
+    /**
+     * encode the input data producing a base 64 encoded byte array.
+     *
+     * @return a byte array containing the base 64 encoded data.
+     */
+    public static byte[] encode(
+        byte[]    data)
+    {
+        int len = (data.length + 2) / 3 * 4;
+        ByteArrayOutputStream bOut = new ByteArrayOutputStream(len);
+        
+        try
+        {
+            encoder.encode(data, 0, data.length, bOut);
+        }
+        catch (IOException e)
+        {
+            throw new RuntimeException("exception encoding base64 string: " + e);
+        }
+        
+        return bOut.toByteArray();
+    }
+
+    /**
+     * Encode the byte data to base 64 writing it to the given output stream.
+     *
+     * @return the number of bytes produced.
+     */
+    public static int encode(
+        byte[]                data,
+        OutputStream    out)
+        throws IOException
+    {
+        return encoder.encode(data, 0, data.length, out);
+    }
+    
+    /**
+     * Encode the byte data to base 64 writing it to the given output stream.
+     *
+     * @return the number of bytes produced.
+     */
+    public static int encode(
+        byte[]                data,
+        int                    off,
+        int                    length,
+        OutputStream    out)
+        throws IOException
+    {
+        return encoder.encode(data, off, length, out);
+    }
+    
+    /**
+     * decode the base 64 encoded input data. It is assumed the input data is valid.
+     *
+     * @return a byte array representing the decoded data.
+     */
+    public static byte[] decode(
+        byte[]    data)
+    {
+        int len = data.length / 4 * 3;
+        ByteArrayOutputStream bOut = new ByteArrayOutputStream(len);
+        
+        try
+        {
+            encoder.decode(data, 0, data.length, bOut);
+        }
+        catch (IOException e)
+        {
+            throw new RuntimeException("exception decoding base64 string: " + e);
+        }
+        
+        return bOut.toByteArray();
+    }
+    
+    /**
+     * decode the base 64 encoded String data - whitespace will be ignored.
+     *
+     * @return a byte array representing the decoded data.
+     */
+    public static byte[] decode(
+        String    data)
+    {
+        int len = data.length() / 4 * 3;
+        ByteArrayOutputStream bOut = new ByteArrayOutputStream(len);
+        
+        try
+        {
+            encoder.decode(data, bOut);
+        }
+        catch (IOException e)
+        {
+            throw new RuntimeException("exception decoding base64 string: " + e);
+        }
+        
+        return bOut.toByteArray();
+    }
+    
+    /**
+     * decode the base 64 encoded String data writing it to the given output stream,
+     * whitespace characters will be ignored.
+     *
+     * @return the number of bytes produced.
+     */
+    public static int decode(
+        String                data,
+        OutputStream    out)
+        throws IOException
+    {
+        return encoder.decode(data, out);
+    }
+}
-- 
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