1 files changed, 54 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/kdf/DHKDFParameters.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/kdf/DHKDFParameters.java
new file mode 100644
index 000000000..96656cedf
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/agreement/kdf/DHKDFParameters.java
@@ -0,0 +1,54 @@
+package org.spongycastle.crypto.agreement.kdf;
+
+import org.spongycastle.asn1.ASN1ObjectIdentifier;
+import org.spongycastle.asn1.DERObjectIdentifier;
+import org.spongycastle.crypto.DerivationParameters;
+
+public class DHKDFParameters
+    implements DerivationParameters
+{
+    private ASN1ObjectIdentifier algorithm;
+    private int keySize;
+    private byte[] z;
+    private byte[] extraInfo;
+
+    public DHKDFParameters(
+        DERObjectIdentifier algorithm,
+        int keySize,
+        byte[] z)
+    {
+        this(algorithm, keySize, z, null);
+    }
+
+    public DHKDFParameters(
+        DERObjectIdentifier algorithm,
+        int keySize,
+        byte[] z,
+        byte[] extraInfo)
+    {
+        this.algorithm = new ASN1ObjectIdentifier(algorithm.getId());
+        this.keySize = keySize;
+        this.z = z;
+        this.extraInfo = extraInfo;
+    }
+
+    public ASN1ObjectIdentifier getAlgorithm()
+    {
+        return algorithm;
+    }
+
+    public int getKeySize()
+    {
+        return keySize;
+    }
+
+    public byte[] getZ()
+    {
+        return z;
+    }
+
+    public byte[] getExtraInfo()
+    {
+        return extraInfo;
+    }
+}