bouncycastle: Android tree with upstream code for version 1.52

Android tree as of
1af9aad12fedf1d93333e19f5ed0ab86f1cc4e2a

Change-Id: I714fa0954a5d000cd88d1fb78b0b7fe28246d404

1 files changed, 75 insertions, 0 deletions

diff --git a/bcprov/src/main/java/org/bouncycastle/crypto/tls/ServerSRPParams.java b/bcprov/src/main/java/org/bouncycastle/crypto/tls/ServerSRPParams.java
new file mode 100644
index 00000000..21ca7d0f
--- /dev/null
+++ b/bcprov/src/main/java/org/bouncycastle/crypto/tls/ServerSRPParams.java
@@ -0,0 +1,75 @@
+package org.bouncycastle.crypto.tls;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.math.BigInteger;
+
+import org.bouncycastle.util.Arrays;
+
+public class ServerSRPParams
+{
+    protected BigInteger N, g, B;
+    protected byte[] s;
+
+    public ServerSRPParams(BigInteger N, BigInteger g, byte[] s, BigInteger B)
+    {
+        this.N = N;
+        this.g = g;
+        this.s = Arrays.clone(s);
+        this.B = B;
+    }
+
+    public BigInteger getB()
+    {
+        return B;
+    }
+    
+    public BigInteger getG()
+    {
+        return g;
+    }
+
+    public BigInteger getN()
+    {
+        return N;
+    }
+
+    public byte[] getS()
+    {
+        return s;
+    }
+
+    /**
+     * Encode this {@link ServerSRPParams} to an {@link OutputStream}.
+     * 
+     * @param output
+     *            the {@link OutputStream} to encode to.
+     * @throws IOException
+     */
+    public void encode(OutputStream output) throws IOException
+    {
+        TlsSRPUtils.writeSRPParameter(N, output);
+        TlsSRPUtils.writeSRPParameter(g, output);
+        TlsUtils.writeOpaque8(s, output);
+        TlsSRPUtils.writeSRPParameter(B, output);
+    }
+
+    /**
+     * Parse a {@link ServerSRPParams} from an {@link InputStream}.
+     * 
+     * @param input
+     *            the {@link InputStream} to parse from.
+     * @return a {@link ServerSRPParams} object.
+     * @throws IOException
+     */
+    public static ServerSRPParams parse(InputStream input) throws IOException
+    {
+        BigInteger N = TlsSRPUtils.readSRPParameter(input);
+        BigInteger g = TlsSRPUtils.readSRPParameter(input);
+        byte[] s = TlsUtils.readOpaque8(input);
+        BigInteger B = TlsSRPUtils.readSRPParameter(input);
+
+        return new ServerSRPParams(N, g, s, B);
+    }
+}