1 files changed, 176 insertions, 0 deletions
diff --git a/bcprov/src/main/java/org/bouncycastle/jce/spec/IESParameterSpec.java b/bcprov/src/main/java/org/bouncycastle/jce/spec/IESParameterSpec.java
new file mode 100644
index 0000000..c18a88f
--- /dev/null
+++ b/bcprov/src/main/java/org/bouncycastle/jce/spec/IESParameterSpec.java
@@ -0,0 +1,176 @@
+package org.bouncycastle.jce.spec;
+
+import java.security.spec.AlgorithmParameterSpec;
+
+import org.bouncycastle.util.Arrays;
+
+/**
+ * Parameter spec for an integrated encryptor, as in IEEE P1363a
+ */
+public class IESParameterSpec
+    implements AlgorithmParameterSpec
+{
+    private byte[] derivation;
+    private byte[] encoding;
+    private int macKeySize;
+    private int cipherKeySize;
+    private byte[] nonce;
+    private boolean usePointCompression;
+
+
+    /**
+     * Set the IES engine parameters.
+     *
+     * @param derivation the optional derivation vector for the KDF.
+     * @param encoding   the optional encoding vector for the KDF.
+     * @param macKeySize the key size (in bits) for the MAC.
+     */
+    public IESParameterSpec(
+        byte[] derivation,
+        byte[] encoding,
+        int macKeySize)
+    {
+        this(derivation, encoding, macKeySize, -1, null, false);
+    }
+
+
+    /**
+     * Set the IES engine parameters.
+     *
+     * @param derivation    the optional derivation vector for the KDF.
+     * @param encoding      the optional encoding vector for the KDF.
+     * @param macKeySize    the key size (in bits) for the MAC.
+     * @param cipherKeySize the key size (in bits) for the block cipher.
+     */
+    public IESParameterSpec(
+        byte[] derivation,
+        byte[] encoding,
+        int macKeySize,
+        int cipherKeySize)
+    {
+        this(derivation, encoding, macKeySize, cipherKeySize, null, false);
+    }
+
+    /**
+     * Set the IES engine parameters.
+     *
+     * @param derivation    the optional derivation vector for the KDF.
+     * @param encoding      the optional encoding vector for the KDF.
+     * @param macKeySize    the key size (in bits) for the MAC.
+     * @param cipherKeySize the key size (in bits) for the block cipher.
+     * @param nonce         an IV to use initialising the block cipher.
+     */
+    public IESParameterSpec(
+        byte[] derivation,
+        byte[] encoding,
+        int macKeySize,
+        int cipherKeySize,
+        byte[] nonce)
+    {
+        this(derivation, encoding, macKeySize, cipherKeySize, nonce, false);
+    }
+
+    /**
+     * Set the IES engine parameters.
+     *
+     * @param derivation    the optional derivation vector for the KDF.
+     * @param encoding      the optional encoding vector for the KDF.
+     * @param macKeySize    the key size (in bits) for the MAC.
+     * @param cipherKeySize the key size (in bits) for the block cipher.
+     * @param nonce         an IV to use initialising the block cipher.
+     * @param usePointCompression whether to use EC point compression or not (false by default)
+     */
+    public IESParameterSpec(
+        byte[] derivation,
+        byte[] encoding,
+        int macKeySize,
+        int cipherKeySize,
+        byte[] nonce,
+        boolean usePointCompression)
+    {
+        if (derivation != null)
+        {
+            this.derivation = new byte[derivation.length];
+            System.arraycopy(derivation, 0, this.derivation, 0, derivation.length);
+        }
+        else
+        {
+            this.derivation = null;
+        }
+
+        if (encoding != null)
+        {
+            this.encoding = new byte[encoding.length];
+            System.arraycopy(encoding, 0, this.encoding, 0, encoding.length);
+        }
+        else
+        {
+            this.encoding = null;
+        }
+
+        this.macKeySize = macKeySize;
+        this.cipherKeySize = cipherKeySize;
+        this.nonce = Arrays.clone(nonce);
+        this.usePointCompression = usePointCompression;
+    }
+
+    /**
+     * return the derivation vector.
+     */
+    public byte[] getDerivationV()
+    {
+        return Arrays.clone(derivation);
+    }
+
+    /**
+     * return the encoding vector.
+     */
+    public byte[] getEncodingV()
+    {
+        return Arrays.clone(encoding);
+    }
+
+    /**
+     * return the key size in bits for the MAC used with the message
+     */
+    public int getMacKeySize()
+    {
+        return macKeySize;
+    }
+
+    /**
+     * return the key size in bits for the block cipher used with the message
+     */
+    public int getCipherKeySize()
+    {
+        return cipherKeySize;
+    }
+
+    /**
+     * Return the nonce (IV) value to be associated with message.
+     *
+     * @return block cipher IV for message.
+     */
+    public byte[] getNonce()
+    {
+        return Arrays.clone(nonce);
+    }
+
+    /**
+     * Set the 'point compression' flag.
+     */
+    public void setPointCompression(boolean usePointCompression)
+    {
+        this.usePointCompression = usePointCompression;
+    }
+
+    /**
+     * Return the 'point compression' flag.
+     *
+     * @return the point compression flag
+     */
+    public boolean getPointCompression()
+    {
+        return usePointCompression;
+    }
+}
+\ No newline at end of file