1 files changed, 31 insertions, 0 deletions
diff --git a/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/parsers/DHIESPublicKeyParser.java b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/parsers/DHIESPublicKeyParser.java
new file mode 100644
index 000000000..26ba1193a
--- /dev/null
+++ b/libraries/spongycastle/core/src/main/java/org/spongycastle/crypto/parsers/DHIESPublicKeyParser.java
@@ -0,0 +1,31 @@
+package org.spongycastle.crypto.parsers;
+
+import java.io.IOException;
+import java.io.InputStream;
+import java.math.BigInteger;
+
+import org.spongycastle.crypto.KeyParser;
+import org.spongycastle.crypto.params.AsymmetricKeyParameter;
+import org.spongycastle.crypto.params.DHParameters;
+import org.spongycastle.crypto.params.DHPublicKeyParameters;
+
+public class DHIESPublicKeyParser
+    implements KeyParser
+{
+    private DHParameters dhParams;
+
+    public DHIESPublicKeyParser(DHParameters dhParams)
+    {
+        this.dhParams = dhParams;
+    }
+
+    public AsymmetricKeyParameter readKey(InputStream stream)
+        throws IOException
+    {
+        byte[] V = new byte[(dhParams.getP().bitLength() + 7) / 8];
+
+        stream.read(V, 0, V.length);
+
+        return new DHPublicKeyParameters(new BigInteger(1, V), dhParams);
+    }
+}