1 files changed, 104 insertions, 0 deletions
diff --git a/libraries/spongycastle/prov/src/main/java/org/spongycastle/jce/spec/IESParameterSpec.java b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jce/spec/IESParameterSpec.java
new file mode 100644
index 000000000..e590a7690
--- /dev/null
+++ b/libraries/spongycastle/prov/src/main/java/org/spongycastle/jce/spec/IESParameterSpec.java
@@ -0,0 +1,104 @@
+package org.spongycastle.jce.spec;
+
+import java.security.spec.AlgorithmParameterSpec;
+
+/**
+ * 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;
+
+
+    /**
+     * 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);
+    }
+
+
+    /**
+     * 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)
+    {
+        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;
+    }
+
+
+    /**
+     * return the derivation vector.
+     */
+    public byte[] getDerivationV()
+    {
+        return derivation;
+    }
+
+    /**
+     * return the encoding vector.
+     */
+    public byte[] getEncodingV()
+    {
+        return 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;
+    }
+
+}