initial Haraka install

5 files changed, 921 insertions, 0 deletions

diff --git a/crypto/src/crypto/digests/Haraka256Digest.cs b/crypto/src/crypto/digests/Haraka256Digest.cs
new file mode 100644
index 000000000..b5b230e27
--- /dev/null
+++ b/crypto/src/crypto/digests/Haraka256Digest.cs
@@ -0,0 +1,160 @@
+using System;
+
+
+namespace Org.BouncyCastle.Crypto.Digests
+{
+    public class Haraka256Digest : HarakaBase
+    {
+        private static readonly byte[][] RC = new byte[][]{
+        new byte[]{(byte)0x06, (byte)0x84, (byte)0x70, (byte)0x4c, (byte)0xe6, (byte)0x20, (byte)0xc0, (byte)0x0a, (byte)0xb2, (byte)0xc5, (byte)0xfe, (byte)0xf0, (byte)0x75, (byte)0x81, (byte)0x7b, (byte)0x9d},
+        new byte[]{(byte)0x8b, (byte)0x66, (byte)0xb4, (byte)0xe1, (byte)0x88, (byte)0xf3, (byte)0xa0, (byte)0x6b, (byte)0x64, (byte)0x0f, (byte)0x6b, (byte)0xa4, (byte)0x2f, (byte)0x08, (byte)0xf7, (byte)0x17},
+        new byte[]{(byte)0x34, (byte)0x02, (byte)0xde, (byte)0x2d, (byte)0x53, (byte)0xf2, (byte)0x84, (byte)0x98, (byte)0xcf, (byte)0x02, (byte)0x9d, (byte)0x60, (byte)0x9f, (byte)0x02, (byte)0x91, (byte)0x14},
+        new byte[]{(byte)0x0e, (byte)0xd6, (byte)0xea, (byte)0xe6, (byte)0x2e, (byte)0x7b, (byte)0x4f, (byte)0x08, (byte)0xbb, (byte)0xf3, (byte)0xbc, (byte)0xaf, (byte)0xfd, (byte)0x5b, (byte)0x4f, (byte)0x79},
+        new byte[]{(byte)0xcb, (byte)0xcf, (byte)0xb0, (byte)0xcb, (byte)0x48, (byte)0x72, (byte)0x44, (byte)0x8b, (byte)0x79, (byte)0xee, (byte)0xcd, (byte)0x1c, (byte)0xbe, (byte)0x39, (byte)0x70, (byte)0x44},
+        new byte[]{(byte)0x7e, (byte)0xea, (byte)0xcd, (byte)0xee, (byte)0x6e, (byte)0x90, (byte)0x32, (byte)0xb7, (byte)0x8d, (byte)0x53, (byte)0x35, (byte)0xed, (byte)0x2b, (byte)0x8a, (byte)0x05, (byte)0x7b},
+        new byte[]{(byte)0x67, (byte)0xc2, (byte)0x8f, (byte)0x43, (byte)0x5e, (byte)0x2e, (byte)0x7c, (byte)0xd0, (byte)0xe2, (byte)0x41, (byte)0x27, (byte)0x61, (byte)0xda, (byte)0x4f, (byte)0xef, (byte)0x1b},
+        new byte[]{(byte)0x29, (byte)0x24, (byte)0xd9, (byte)0xb0, (byte)0xaf, (byte)0xca, (byte)0xcc, (byte)0x07, (byte)0x67, (byte)0x5f, (byte)0xfd, (byte)0xe2, (byte)0x1f, (byte)0xc7, (byte)0x0b, (byte)0x3b},
+        new byte[]{(byte)0xab, (byte)0x4d, (byte)0x63, (byte)0xf1, (byte)0xe6, (byte)0x86, (byte)0x7f, (byte)0xe9, (byte)0xec, (byte)0xdb, (byte)0x8f, (byte)0xca, (byte)0xb9, (byte)0xd4, (byte)0x65, (byte)0xee},
+        new byte[]{(byte)0x1c, (byte)0x30, (byte)0xbf, (byte)0x84, (byte)0xd4, (byte)0xb7, (byte)0xcd, (byte)0x64, (byte)0x5b, (byte)0x2a, (byte)0x40, (byte)0x4f, (byte)0xad, (byte)0x03, (byte)0x7e, (byte)0x33},
+        new byte[]{(byte)0xb2, (byte)0xcc, (byte)0x0b, (byte)0xb9, (byte)0x94, (byte)0x17, (byte)0x23, (byte)0xbf, (byte)0x69, (byte)0x02, (byte)0x8b, (byte)0x2e, (byte)0x8d, (byte)0xf6, (byte)0x98, (byte)0x00},
+        new byte[]{(byte)0xfa, (byte)0x04, (byte)0x78, (byte)0xa6, (byte)0xde, (byte)0x6f, (byte)0x55, (byte)0x72, (byte)0x4a, (byte)0xaa, (byte)0x9e, (byte)0xc8, (byte)0x5c, (byte)0x9d, (byte)0x2d, (byte)0x8a},
+        new byte[]{(byte)0xdf, (byte)0xb4, (byte)0x9f, (byte)0x2b, (byte)0x6b, (byte)0x77, (byte)0x2a, (byte)0x12, (byte)0x0e, (byte)0xfa, (byte)0x4f, (byte)0x2e, (byte)0x29, (byte)0x12, (byte)0x9f, (byte)0xd4},
+        new byte[]{(byte)0x1e, (byte)0xa1, (byte)0x03, (byte)0x44, (byte)0xf4, (byte)0x49, (byte)0xa2, (byte)0x36, (byte)0x32, (byte)0xd6, (byte)0x11, (byte)0xae, (byte)0xbb, (byte)0x6a, (byte)0x12, (byte)0xee},
+        new byte[]{(byte)0xaf, (byte)0x04, (byte)0x49, (byte)0x88, (byte)0x4b, (byte)0x05, (byte)0x00, (byte)0x84, (byte)0x5f, (byte)0x96, (byte)0x00, (byte)0xc9, (byte)0x9c, (byte)0xa8, (byte)0xec, (byte)0xa6},
+        new byte[]{(byte)0x21, (byte)0x02, (byte)0x5e, (byte)0xd8, (byte)0x9d, (byte)0x19, (byte)0x9c, (byte)0x4f, (byte)0x78, (byte)0xa2, (byte)0xc7, (byte)0xe3, (byte)0x27, (byte)0xe5, (byte)0x93, (byte)0xec},
+        new byte[]{(byte)0xbf, (byte)0x3a, (byte)0xaa, (byte)0xf8, (byte)0xa7, (byte)0x59, (byte)0xc9, (byte)0xb7, (byte)0xb9, (byte)0x28, (byte)0x2e, (byte)0xcd, (byte)0x82, (byte)0xd4, (byte)0x01, (byte)0x73},
+        new byte[]{(byte)0x62, (byte)0x60, (byte)0x70, (byte)0x0d, (byte)0x61, (byte)0x86, (byte)0xb0, (byte)0x17, (byte)0x37, (byte)0xf2, (byte)0xef, (byte)0xd9, (byte)0x10, (byte)0x30, (byte)0x7d, (byte)0x6b},
+        new byte[]{(byte)0x5a, (byte)0xca, (byte)0x45, (byte)0xc2, (byte)0x21, (byte)0x30, (byte)0x04, (byte)0x43, (byte)0x81, (byte)0xc2, (byte)0x91, (byte)0x53, (byte)0xf6, (byte)0xfc, (byte)0x9a, (byte)0xc6},
+        new byte[]{(byte)0x92, (byte)0x23, (byte)0x97, (byte)0x3c, (byte)0x22, (byte)0x6b, (byte)0x68, (byte)0xbb, (byte)0x2c, (byte)0xaf, (byte)0x92, (byte)0xe8, (byte)0x36, (byte)0xd1, (byte)0x94, (byte)0x3a}
+    };
+        private readonly byte[] buffer;
+        private int off;
+        private void mix256(byte[][] s1, byte[][] s2)
+        {
+            Array.Copy(s1[0], 0, s2[0], 0, 4);
+            Array.Copy(s1[1], 0, s2[0], 4, 4);
+            Array.Copy(s1[0], 4, s2[0], 8, 4);
+            Array.Copy(s1[1], 4, s2[0], 12, 4);
+
+            Array.Copy(s1[0], 8, s2[1], 0, 4);
+            Array.Copy(s1[1], 8, s2[1], 4, 4);
+            Array.Copy(s1[0], 12, s2[1], 8, 4);
+            Array.Copy(s1[1], 12, s2[1], 12, 4);
+        }
+
+        private int haraka256256(byte[] msg, byte[] output, int outOff)
+        {
+            byte[][] s1 = new byte[2][];
+            s1[0] = new byte[16];
+            s1[1] = new byte[16];
+            byte[][] s2 = new byte[2][];
+            s2[0] = new byte[16];
+            s2[1] = new byte[16];
+
+            Array.Copy(msg, 0, s1[0], 0, 16);
+            Array.Copy(msg, 16, s1[1], 0, 16);
+
+            s1[0] = aesEnc(s1[0], RC[0]);
+            s1[1] = aesEnc(s1[1], RC[1]);
+            s1[0] = aesEnc(s1[0], RC[2]);
+            s1[1] = aesEnc(s1[1], RC[3]);
+            mix256(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[4]);
+            s1[1] = aesEnc(s2[1], RC[5]);
+            s1[0] = aesEnc(s1[0], RC[6]);
+            s1[1] = aesEnc(s1[1], RC[7]);
+            mix256(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[8]);
+            s1[1] = aesEnc(s2[1], RC[9]);
+            s1[0] = aesEnc(s1[0], RC[10]);
+            s1[1] = aesEnc(s1[1], RC[11]);
+            mix256(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[12]);
+            s1[1] = aesEnc(s2[1], RC[13]);
+            s1[0] = aesEnc(s1[0], RC[14]);
+            s1[1] = aesEnc(s1[1], RC[15]);
+            mix256(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[16]);
+            s1[1] = aesEnc(s2[1], RC[17]);
+            s1[0] = aesEnc(s1[0], RC[18]);
+            s1[1] = aesEnc(s1[1], RC[19]);
+            mix256(s1, s2);
+
+            s1[0] = Xor(s2[0], msg, 0);
+            s1[1] = Xor(s2[1], msg, 16);
+
+            Array.Copy(s1[0], 0, output, outOff, 16);
+            Array.Copy(s1[1], 0, output, outOff + 16, 16);
+
+            return DIGEST_SIZE;
+        }
+
+
+
+        public Haraka256Digest()
+        {
+            this.buffer = new byte[32];
+        }
+
+        public Haraka256Digest(Haraka256Digest digest)
+        {
+            this.buffer = (byte[]) digest.buffer.Clone();
+            this.off = digest.off;
+        }
+
+        public string getAlgorithmName()
+        {
+            return "Haraka-256";
+        }
+
+        public override void Update(byte input)
+        {
+            if (off + 1 > 32)
+            {
+                throw new ArgumentException("total input cannot be more than 32 bytes");
+            }
+
+            buffer[off++] = input;
+        }
+
+        public void Update(byte[] input, int inOff, int len)
+        {
+            if (off + len > 32)
+            {
+                throw new ArgumentException("total input cannot be more than 32 bytes");
+            }
+
+            Array.Copy(input, inOff, buffer, off, len);
+            off += len;
+        }
+
+        public override int DoFinal(byte[] output, int outOff)
+        {
+            if (off != 32)
+            {
+                throw new ArgumentException("input must be exactly 32 bytes");
+            }
+
+            if (output.Length - outOff < 32)
+            {
+                throw new ArgumentException("output too short to receive digest");
+            }
+
+            int rv = haraka256256(buffer, output, outOff);
+
+            Reset();
+
+            return rv;
+        }
+
+        public override void Reset()
+        {
+            off = 0;
+            Array.Clear(buffer, 0, 32);
+        }
+    }
+}
\ No newline at end of file
diff --git a/crypto/src/crypto/digests/Haraka512Digest.cs b/crypto/src/crypto/digests/Haraka512Digest.cs
new file mode 100644
index 000000000..ce48c81bc
--- /dev/null
+++ b/crypto/src/crypto/digests/Haraka512Digest.cs
@@ -0,0 +1,221 @@
+using System;
+
+namespace Org.BouncyCastle.Crypto.Digests
+{
+    public class Haraka512Digest : HarakaBase
+    {
+        private static readonly byte[][] RC = new byte[][]{
+            new byte[]{(byte)0x06, (byte)0x84, (byte)0x70, (byte)0x4c, (byte)0xe6, (byte)0x20, (byte)0xc0, (byte)0x0a, (byte)0xb2, (byte)0xc5, (byte)0xfe, (byte)0xf0, (byte)0x75, (byte)0x81, (byte)0x7b, (byte)0x9d},
+            new byte[]{(byte)0x8b, (byte)0x66, (byte)0xb4, (byte)0xe1, (byte)0x88, (byte)0xf3, (byte)0xa0, (byte)0x6b, (byte)0x64, (byte)0x0f, (byte)0x6b, (byte)0xa4, (byte)0x2f, (byte)0x08, (byte)0xf7, (byte)0x17},
+            new byte[]{(byte)0x34, (byte)0x02, (byte)0xde, (byte)0x2d, (byte)0x53, (byte)0xf2, (byte)0x84, (byte)0x98, (byte)0xcf, (byte)0x02, (byte)0x9d, (byte)0x60, (byte)0x9f, (byte)0x02, (byte)0x91, (byte)0x14},
+            new byte[]{(byte)0x0e, (byte)0xd6, (byte)0xea, (byte)0xe6, (byte)0x2e, (byte)0x7b, (byte)0x4f, (byte)0x08, (byte)0xbb, (byte)0xf3, (byte)0xbc, (byte)0xaf, (byte)0xfd, (byte)0x5b, (byte)0x4f, (byte)0x79},
+            new byte[]{(byte)0xcb, (byte)0xcf, (byte)0xb0, (byte)0xcb, (byte)0x48, (byte)0x72, (byte)0x44, (byte)0x8b, (byte)0x79, (byte)0xee, (byte)0xcd, (byte)0x1c, (byte)0xbe, (byte)0x39, (byte)0x70, (byte)0x44},
+            new byte[]{(byte)0x7e, (byte)0xea, (byte)0xcd, (byte)0xee, (byte)0x6e, (byte)0x90, (byte)0x32, (byte)0xb7, (byte)0x8d, (byte)0x53, (byte)0x35, (byte)0xed, (byte)0x2b, (byte)0x8a, (byte)0x05, (byte)0x7b},
+            new byte[]{(byte)0x67, (byte)0xc2, (byte)0x8f, (byte)0x43, (byte)0x5e, (byte)0x2e, (byte)0x7c, (byte)0xd0, (byte)0xe2, (byte)0x41, (byte)0x27, (byte)0x61, (byte)0xda, (byte)0x4f, (byte)0xef, (byte)0x1b},
+            new byte[]{(byte)0x29, (byte)0x24, (byte)0xd9, (byte)0xb0, (byte)0xaf, (byte)0xca, (byte)0xcc, (byte)0x07, (byte)0x67, (byte)0x5f, (byte)0xfd, (byte)0xe2, (byte)0x1f, (byte)0xc7, (byte)0x0b, (byte)0x3b},
+            new byte[]{(byte)0xab, (byte)0x4d, (byte)0x63, (byte)0xf1, (byte)0xe6, (byte)0x86, (byte)0x7f, (byte)0xe9, (byte)0xec, (byte)0xdb, (byte)0x8f, (byte)0xca, (byte)0xb9, (byte)0xd4, (byte)0x65, (byte)0xee},
+            new byte[]{(byte)0x1c, (byte)0x30, (byte)0xbf, (byte)0x84, (byte)0xd4, (byte)0xb7, (byte)0xcd, (byte)0x64, (byte)0x5b, (byte)0x2a, (byte)0x40, (byte)0x4f, (byte)0xad, (byte)0x03, (byte)0x7e, (byte)0x33},
+            new byte[]{(byte)0xb2, (byte)0xcc, (byte)0x0b, (byte)0xb9, (byte)0x94, (byte)0x17, (byte)0x23, (byte)0xbf, (byte)0x69, (byte)0x02, (byte)0x8b, (byte)0x2e, (byte)0x8d, (byte)0xf6, (byte)0x98, (byte)0x00},
+            new byte[]{(byte)0xfa, (byte)0x04, (byte)0x78, (byte)0xa6, (byte)0xde, (byte)0x6f, (byte)0x55, (byte)0x72, (byte)0x4a, (byte)0xaa, (byte)0x9e, (byte)0xc8, (byte)0x5c, (byte)0x9d, (byte)0x2d, (byte)0x8a},
+            new byte[]{(byte)0xdf, (byte)0xb4, (byte)0x9f, (byte)0x2b, (byte)0x6b, (byte)0x77, (byte)0x2a, (byte)0x12, (byte)0x0e, (byte)0xfa, (byte)0x4f, (byte)0x2e, (byte)0x29, (byte)0x12, (byte)0x9f, (byte)0xd4},
+            new byte[]{(byte)0x1e, (byte)0xa1, (byte)0x03, (byte)0x44, (byte)0xf4, (byte)0x49, (byte)0xa2, (byte)0x36, (byte)0x32, (byte)0xd6, (byte)0x11, (byte)0xae, (byte)0xbb, (byte)0x6a, (byte)0x12, (byte)0xee},
+            new byte[]{(byte)0xaf, (byte)0x04, (byte)0x49, (byte)0x88, (byte)0x4b, (byte)0x05, (byte)0x00, (byte)0x84, (byte)0x5f, (byte)0x96, (byte)0x00, (byte)0xc9, (byte)0x9c, (byte)0xa8, (byte)0xec, (byte)0xa6},
+            new byte[]{(byte)0x21, (byte)0x02, (byte)0x5e, (byte)0xd8, (byte)0x9d, (byte)0x19, (byte)0x9c, (byte)0x4f, (byte)0x78, (byte)0xa2, (byte)0xc7, (byte)0xe3, (byte)0x27, (byte)0xe5, (byte)0x93, (byte)0xec},
+            new byte[]{(byte)0xbf, (byte)0x3a, (byte)0xaa, (byte)0xf8, (byte)0xa7, (byte)0x59, (byte)0xc9, (byte)0xb7, (byte)0xb9, (byte)0x28, (byte)0x2e, (byte)0xcd, (byte)0x82, (byte)0xd4, (byte)0x01, (byte)0x73},
+            new byte[]{(byte)0x62, (byte)0x60, (byte)0x70, (byte)0x0d, (byte)0x61, (byte)0x86, (byte)0xb0, (byte)0x17, (byte)0x37, (byte)0xf2, (byte)0xef, (byte)0xd9, (byte)0x10, (byte)0x30, (byte)0x7d, (byte)0x6b},
+            new byte[]{(byte)0x5a, (byte)0xca, (byte)0x45, (byte)0xc2, (byte)0x21, (byte)0x30, (byte)0x04, (byte)0x43, (byte)0x81, (byte)0xc2, (byte)0x91, (byte)0x53, (byte)0xf6, (byte)0xfc, (byte)0x9a, (byte)0xc6},
+            new byte[]{(byte)0x92, (byte)0x23, (byte)0x97, (byte)0x3c, (byte)0x22, (byte)0x6b, (byte)0x68, (byte)0xbb, (byte)0x2c, (byte)0xaf, (byte)0x92, (byte)0xe8, (byte)0x36, (byte)0xd1, (byte)0x94, (byte)0x3a},
+            new byte[]{(byte)0xd3, (byte)0xbf, (byte)0x92, (byte)0x38, (byte)0x22, (byte)0x58, (byte)0x86, (byte)0xeb, (byte)0x6c, (byte)0xba, (byte)0xb9, (byte)0x58, (byte)0xe5, (byte)0x10, (byte)0x71, (byte)0xb4},
+            new byte[]{(byte)0xdb, (byte)0x86, (byte)0x3c, (byte)0xe5, (byte)0xae, (byte)0xf0, (byte)0xc6, (byte)0x77, (byte)0x93, (byte)0x3d, (byte)0xfd, (byte)0xdd, (byte)0x24, (byte)0xe1, (byte)0x12, (byte)0x8d},
+            new byte[]{(byte)0xbb, (byte)0x60, (byte)0x62, (byte)0x68, (byte)0xff, (byte)0xeb, (byte)0xa0, (byte)0x9c, (byte)0x83, (byte)0xe4, (byte)0x8d, (byte)0xe3, (byte)0xcb, (byte)0x22, (byte)0x12, (byte)0xb1},
+            new byte[]{(byte)0x73, (byte)0x4b, (byte)0xd3, (byte)0xdc, (byte)0xe2, (byte)0xe4, (byte)0xd1, (byte)0x9c, (byte)0x2d, (byte)0xb9, (byte)0x1a, (byte)0x4e, (byte)0xc7, (byte)0x2b, (byte)0xf7, (byte)0x7d},
+            new byte[]{(byte)0x43, (byte)0xbb, (byte)0x47, (byte)0xc3, (byte)0x61, (byte)0x30, (byte)0x1b, (byte)0x43, (byte)0x4b, (byte)0x14, (byte)0x15, (byte)0xc4, (byte)0x2c, (byte)0xb3, (byte)0x92, (byte)0x4e},
+            new byte[]{(byte)0xdb, (byte)0xa7, (byte)0x75, (byte)0xa8, (byte)0xe7, (byte)0x07, (byte)0xef, (byte)0xf6, (byte)0x03, (byte)0xb2, (byte)0x31, (byte)0xdd, (byte)0x16, (byte)0xeb, (byte)0x68, (byte)0x99},
+            new byte[]{(byte)0x6d, (byte)0xf3, (byte)0x61, (byte)0x4b, (byte)0x3c, (byte)0x75, (byte)0x59, (byte)0x77, (byte)0x8e, (byte)0x5e, (byte)0x23, (byte)0x02, (byte)0x7e, (byte)0xca, (byte)0x47, (byte)0x2c},
+            new byte[]{(byte)0xcd, (byte)0xa7, (byte)0x5a, (byte)0x17, (byte)0xd6, (byte)0xde, (byte)0x7d, (byte)0x77, (byte)0x6d, (byte)0x1b, (byte)0xe5, (byte)0xb9, (byte)0xb8, (byte)0x86, (byte)0x17, (byte)0xf9},
+            new byte[]{(byte)0xec, (byte)0x6b, (byte)0x43, (byte)0xf0, (byte)0x6b, (byte)0xa8, (byte)0xe9, (byte)0xaa, (byte)0x9d, (byte)0x6c, (byte)0x06, (byte)0x9d, (byte)0xa9, (byte)0x46, (byte)0xee, (byte)0x5d},
+            new byte[]{(byte)0xcb, (byte)0x1e, (byte)0x69, (byte)0x50, (byte)0xf9, (byte)0x57, (byte)0x33, (byte)0x2b, (byte)0xa2, (byte)0x53, (byte)0x11, (byte)0x59, (byte)0x3b, (byte)0xf3, (byte)0x27, (byte)0xc1},
+            new byte[]{(byte)0x2c, (byte)0xee, (byte)0x0c, (byte)0x75, (byte)0x00, (byte)0xda, (byte)0x61, (byte)0x9c, (byte)0xe4, (byte)0xed, (byte)0x03, (byte)0x53, (byte)0x60, (byte)0x0e, (byte)0xd0, (byte)0xd9},
+            new byte[]{(byte)0xf0, (byte)0xb1, (byte)0xa5, (byte)0xa1, (byte)0x96, (byte)0xe9, (byte)0x0c, (byte)0xab, (byte)0x80, (byte)0xbb, (byte)0xba, (byte)0xbc, (byte)0x63, (byte)0xa4, (byte)0xa3, (byte)0x50},
+            new byte[]{(byte)0xae, (byte)0x3d, (byte)0xb1, (byte)0x02, (byte)0x5e, (byte)0x96, (byte)0x29, (byte)0x88, (byte)0xab, (byte)0x0d, (byte)0xde, (byte)0x30, (byte)0x93, (byte)0x8d, (byte)0xca, (byte)0x39},
+            new byte[]{(byte)0x17, (byte)0xbb, (byte)0x8f, (byte)0x38, (byte)0xd5, (byte)0x54, (byte)0xa4, (byte)0x0b, (byte)0x88, (byte)0x14, (byte)0xf3, (byte)0xa8, (byte)0x2e, (byte)0x75, (byte)0xb4, (byte)0x42},
+            new byte[]{(byte)0x34, (byte)0xbb, (byte)0x8a, (byte)0x5b, (byte)0x5f, (byte)0x42, (byte)0x7f, (byte)0xd7, (byte)0xae, (byte)0xb6, (byte)0xb7, (byte)0x79, (byte)0x36, (byte)0x0a, (byte)0x16, (byte)0xf6},
+            new byte[]{(byte)0x26, (byte)0xf6, (byte)0x52, (byte)0x41, (byte)0xcb, (byte)0xe5, (byte)0x54, (byte)0x38, (byte)0x43, (byte)0xce, (byte)0x59, (byte)0x18, (byte)0xff, (byte)0xba, (byte)0xaf, (byte)0xde},
+            new byte[]{(byte)0x4c, (byte)0xe9, (byte)0x9a, (byte)0x54, (byte)0xb9, (byte)0xf3, (byte)0x02, (byte)0x6a, (byte)0xa2, (byte)0xca, (byte)0x9c, (byte)0xf7, (byte)0x83, (byte)0x9e, (byte)0xc9, (byte)0x78},
+            new byte[]{(byte)0xae, (byte)0x51, (byte)0xa5, (byte)0x1a, (byte)0x1b, (byte)0xdf, (byte)0xf7, (byte)0xbe, (byte)0x40, (byte)0xc0, (byte)0x6e, (byte)0x28, (byte)0x22, (byte)0x90, (byte)0x12, (byte)0x35},
+            new byte[]{(byte)0xa0, (byte)0xc1, (byte)0x61, (byte)0x3c, (byte)0xba, (byte)0x7e, (byte)0xd2, (byte)0x2b, (byte)0xc1, (byte)0x73, (byte)0xbc, (byte)0x0f, (byte)0x48, (byte)0xa6, (byte)0x59, (byte)0xcf},
+            new byte[]{(byte)0x75, (byte)0x6a, (byte)0xcc, (byte)0x03, (byte)0x02, (byte)0x28, (byte)0x82, (byte)0x88, (byte)0x4a, (byte)0xd6, (byte)0xbd, (byte)0xfd, (byte)0xe9, (byte)0xc5, (byte)0x9d, (byte)0xa1}
+        };
+
+        private readonly byte[] buffer;
+        private int off;
+
+        public Haraka512Digest()
+        {
+            this.buffer = new byte[64];
+        }
+
+        public Haraka512Digest(Haraka512Digest digest)
+        {
+            this.buffer = (byte[])digest.buffer.Clone();
+            this.off = digest.off;
+        }
+
+        private void Mix512(byte[][] s1, byte[][] s2)
+        {
+            Array.Copy(s1[0], 12, s2[0], 0, 4);
+            Array.Copy(s1[2], 12, s2[0], 4, 4);
+            Array.Copy(s1[1], 12, s2[0], 8, 4);
+            Array.Copy(s1[3], 12, s2[0], 12, 4);
+
+            Array.Copy(s1[2], 0, s2[1], 0, 4);
+            Array.Copy(s1[0], 0, s2[1], 4, 4);
+            Array.Copy(s1[3], 0, s2[1], 8, 4);
+            Array.Copy(s1[1], 0, s2[1], 12, 4);
+
+            Array.Copy(s1[2], 4, s2[2], 0, 4);
+            Array.Copy(s1[0], 4, s2[2], 4, 4);
+            Array.Copy(s1[3], 4, s2[2], 8, 4);
+            Array.Copy(s1[1], 4, s2[2], 12, 4);
+
+            Array.Copy(s1[0], 8, s2[3], 0, 4);
+            Array.Copy(s1[2], 8, s2[3], 4, 4);
+            Array.Copy(s1[1], 8, s2[3], 8, 4);
+            Array.Copy(s1[3], 8, s2[3], 12, 4);
+        }
+
+        private int Haraka512256(byte[] msg, byte[] output, int outOff)
+        {
+            byte[][] s1 = new byte[4][];
+            s1[0] = new byte[16];
+            s1[1] = new byte[16];
+            s1[2] = new byte[16];
+            s1[3] = new byte[16];
+            byte[][] s2 = new byte[4][];
+            s2[0] = new byte[16];
+            s2[1] = new byte[16];
+            s2[2] = new byte[16];
+            s2[3] = new byte[16];
+
+            //-- Unrolled version of above.
+
+            Array.Copy(msg, 0, s1[0], 0, 16);
+            Array.Copy(msg, 16, s1[1], 0, 16);
+            Array.Copy(msg, 32, s1[2], 0, 16);
+            Array.Copy(msg, 48, s1[3], 0, 16);
+
+            s1[0] = aesEnc(s1[0], RC[0]);
+            s1[1] = aesEnc(s1[1], RC[1]);
+            s1[2] = aesEnc(s1[2], RC[2]);
+            s1[3] = aesEnc(s1[3], RC[3]);
+            s1[0] = aesEnc(s1[0], RC[4]);
+            s1[1] = aesEnc(s1[1], RC[5]);
+            s1[2] = aesEnc(s1[2], RC[6]);
+            s1[3] = aesEnc(s1[3], RC[7]);
+            Mix512(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[8]);
+            s1[1] = aesEnc(s2[1], RC[9]);
+            s1[2] = aesEnc(s2[2], RC[10]);
+            s1[3] = aesEnc(s2[3], RC[11]);
+            s1[0] = aesEnc(s1[0], RC[12]);
+            s1[1] = aesEnc(s1[1], RC[13]);
+            s1[2] = aesEnc(s1[2], RC[14]);
+            s1[3] = aesEnc(s1[3], RC[15]);
+            Mix512(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[16]);
+            s1[1] = aesEnc(s2[1], RC[17]);
+            s1[2] = aesEnc(s2[2], RC[18]);
+            s1[3] = aesEnc(s2[3], RC[19]);
+            s1[0] = aesEnc(s1[0], RC[20]);
+            s1[1] = aesEnc(s1[1], RC[21]);
+            s1[2] = aesEnc(s1[2], RC[22]);
+            s1[3] = aesEnc(s1[3], RC[23]);
+            Mix512(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[24]);
+            s1[1] = aesEnc(s2[1], RC[25]);
+            s1[2] = aesEnc(s2[2], RC[26]);
+            s1[3] = aesEnc(s2[3], RC[27]);
+            s1[0] = aesEnc(s1[0], RC[28]);
+            s1[1] = aesEnc(s1[1], RC[29]);
+            s1[2] = aesEnc(s1[2], RC[30]);
+            s1[3] = aesEnc(s1[3], RC[31]);
+            Mix512(s1, s2);
+
+            s1[0] = aesEnc(s2[0], RC[32]);
+            s1[1] = aesEnc(s2[1], RC[33]);
+            s1[2] = aesEnc(s2[2], RC[34]);
+            s1[3] = aesEnc(s2[3], RC[35]);
+            s1[0] = aesEnc(s1[0], RC[36]);
+            s1[1] = aesEnc(s1[1], RC[37]);
+            s1[2] = aesEnc(s1[2], RC[38]);
+            s1[3] = aesEnc(s1[3], RC[39]);
+            Mix512(s1, s2);
+
+            s1[0] = Xor(s2[0], msg, 0);
+            s1[1] = Xor(s2[1], msg, 16);
+            s1[2] = Xor(s2[2], msg, 32);
+            s1[3] = Xor(s2[3], msg, 48);
+
+            Array.Copy(s1[0], 8, output, outOff, 8);
+            Array.Copy(s1[1], 8, output, outOff + 8, 8);
+            Array.Copy(s1[2], 0, output, outOff + 16, 8);
+            Array.Copy(s1[3], 0, output, outOff + 24, 8);
+
+            return DIGEST_SIZE;
+        }
+
+        public string GetAlgorithmName()
+        {
+            return "Haraka-512";
+        }
+
+        public override void Update(byte input)
+        {
+            if (off + 1 > 64)
+            {
+                throw new ArgumentException("total input cannot be more than 64 bytes");
+            }
+
+            buffer[off++] = input;
+        }
+
+        public void Update(byte[] input, int inOff, int len)
+        {
+            if (off + len > 64)
+            {
+                throw new ArgumentException("total input cannot be more than 64 bytes");
+            }
+
+            Array.Copy(input, inOff, buffer, off, len);
+            off += len;
+        }
+
+        public override int DoFinal(byte[] output, int outOff)
+        {
+            if (off != 64)
+            {
+                throw new ArgumentException("input must be exactly 64 bytes");
+            }
+
+            if (output.Length - outOff < 32)
+            {
+                throw new ArgumentException("output too short to receive digest");
+            }
+
+            int rv = Haraka512256(buffer, output, outOff);
+
+            Reset();
+
+            return rv;
+        }
+
+        public override void Reset()
+        {
+            off = 0;
+            Array.Clear(buffer, 0, 64);
+        }
+    }
+}
\ No newline at end of file
diff --git a/crypto/src/crypto/digests/HarakaBase.cs b/crypto/src/crypto/digests/HarakaBase.cs
new file mode 100644
index 000000000..ef74204e9
--- /dev/null
+++ b/crypto/src/crypto/digests/HarakaBase.cs
@@ -0,0 +1,152 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+
+namespace Org.BouncyCastle.Crypto.Digests
+{
+    public abstract class HarakaBase : IDigest
+    {
+        protected static readonly int DIGEST_SIZE = 32;
+
+        protected static readonly byte[,] S = {
+        {(byte)0x63, (byte)0x7c, (byte)0x77, (byte)0x7b, (byte)0xf2, (byte)0x6b, (byte)0x6f, (byte)0xc5, (byte)0x30, (byte)0x01, (byte)0x67, (byte)0x2b, (byte)0xfe, (byte)0xd7, (byte)0xab, (byte)0x76},
+        {(byte)0xca, (byte)0x82, (byte)0xc9, (byte)0x7d, (byte)0xfa, (byte)0x59, (byte)0x47, (byte)0xf0, (byte)0xad, (byte)0xd4, (byte)0xa2, (byte)0xaf, (byte)0x9c, (byte)0xa4, (byte)0x72, (byte)0xc0},
+        {(byte)0xb7, (byte)0xfd, (byte)0x93, (byte)0x26, (byte)0x36, (byte)0x3f, (byte)0xf7, (byte)0xcc, (byte)0x34, (byte)0xa5, (byte)0xe5, (byte)0xf1, (byte)0x71, (byte)0xd8, (byte)0x31, (byte)0x15},
+        {(byte)0x04, (byte)0xc7, (byte)0x23, (byte)0xc3, (byte)0x18, (byte)0x96, (byte)0x05, (byte)0x9a, (byte)0x07, (byte)0x12, (byte)0x80, (byte)0xe2, (byte)0xeb, (byte)0x27, (byte)0xb2, (byte)0x75},
+        {(byte)0x09, (byte)0x83, (byte)0x2c, (byte)0x1a, (byte)0x1b, (byte)0x6e, (byte)0x5a, (byte)0xa0, (byte)0x52, (byte)0x3b, (byte)0xd6, (byte)0xb3, (byte)0x29, (byte)0xe3, (byte)0x2f, (byte)0x84},
+        {(byte)0x53, (byte)0xd1, (byte)0x00, (byte)0xed, (byte)0x20, (byte)0xfc, (byte)0xb1, (byte)0x5b, (byte)0x6a, (byte)0xcb, (byte)0xbe, (byte)0x39, (byte)0x4a, (byte)0x4c, (byte)0x58, (byte)0xcf},
+        {(byte)0xd0, (byte)0xef, (byte)0xaa, (byte)0xfb, (byte)0x43, (byte)0x4d, (byte)0x33, (byte)0x85, (byte)0x45, (byte)0xf9, (byte)0x02, (byte)0x7f, (byte)0x50, (byte)0x3c, (byte)0x9f, (byte)0xa8},
+        {(byte)0x51, (byte)0xa3, (byte)0x40, (byte)0x8f, (byte)0x92, (byte)0x9d, (byte)0x38, (byte)0xf5, (byte)0xbc, (byte)0xb6, (byte)0xda, (byte)0x21, (byte)0x10, (byte)0xff, (byte)0xf3, (byte)0xd2},
+        {(byte)0xcd, (byte)0x0c, (byte)0x13, (byte)0xec, (byte)0x5f, (byte)0x97, (byte)0x44, (byte)0x17, (byte)0xc4, (byte)0xa7, (byte)0x7e, (byte)0x3d, (byte)0x64, (byte)0x5d, (byte)0x19, (byte)0x73},
+        {(byte)0x60, (byte)0x81, (byte)0x4f, (byte)0xdc, (byte)0x22, (byte)0x2a, (byte)0x90, (byte)0x88, (byte)0x46, (byte)0xee, (byte)0xb8, (byte)0x14, (byte)0xde, (byte)0x5e, (byte)0x0b, (byte)0xdb},
+        {(byte)0xe0, (byte)0x32, (byte)0x3a, (byte)0x0a, (byte)0x49, (byte)0x06, (byte)0x24, (byte)0x5c, (byte)0xc2, (byte)0xd3, (byte)0xac, (byte)0x62, (byte)0x91, (byte)0x95, (byte)0xe4, (byte)0x79},
+        {(byte)0xe7, (byte)0xc8, (byte)0x37, (byte)0x6d, (byte)0x8d, (byte)0xd5, (byte)0x4e, (byte)0xa9, (byte)0x6c, (byte)0x56, (byte)0xf4, (byte)0xea, (byte)0x65, (byte)0x7a, (byte)0xae, (byte)0x08},
+        {(byte)0xba, (byte)0x78, (byte)0x25, (byte)0x2e, (byte)0x1c, (byte)0xa6, (byte)0xb4, (byte)0xc6, (byte)0xe8, (byte)0xdd, (byte)0x74, (byte)0x1f, (byte)0x4b, (byte)0xbd, (byte)0x8b, (byte)0x8a},
+        {(byte)0x70, (byte)0x3e, (byte)0xb5, (byte)0x66, (byte)0x48, (byte)0x03, (byte)0xf6, (byte)0x0e, (byte)0x61, (byte)0x35, (byte)0x57, (byte)0xb9, (byte)0x86, (byte)0xc1, (byte)0x1d, (byte)0x9e},
+        {(byte)0xe1, (byte)0xf8, (byte)0x98, (byte)0x11, (byte)0x69, (byte)0xd9, (byte)0x8e, (byte)0x94, (byte)0x9b, (byte)0x1e, (byte)0x87, (byte)0xe9, (byte)0xce, (byte)0x55, (byte)0x28, (byte)0xdf},
+        {(byte)0x8c, (byte)0xa1, (byte)0x89, (byte)0x0d, (byte)0xbf, (byte)0xe6, (byte)0x42, (byte)0x68, (byte)0x41, (byte)0x99, (byte)0x2d, (byte)0x0f, (byte)0xb0, (byte)0x54, (byte)0xbb, (byte)0x16}};
+
+        public string AlgorithmName
+        {
+            get { return "Haraka Base"; }
+        }
+
+        static byte sBox(byte x)
+        {
+            return S[(uint)(((x & 0xFF) >> 4)),x & 0xF];
+        }
+
+        static byte[] subBytes(byte[] s)
+        {
+            byte[] output = new byte[s.Length];
+            for(int i = 0; i < 16; ++i)
+            {
+                output[i] = sBox(s[i]);
+            }
+            return output;
+        }
+
+        static byte[] shiftRows(byte[] s)
+        {
+            return new byte[]{
+            s[0], s[5], s[10], s[15],
+            s[4], s[9], s[14], s[3],
+            s[8], s[13], s[2], s[7],
+            s[12], s[1], s[6], s[11]
+        };
+        }
+
+        protected static byte[] aesEnc(byte[] s, byte[] rk)
+        {
+            s = subBytes(s);
+            s = shiftRows(s);
+            s = mixColumns(s);
+            xorReverse(s, rk);
+            return s;
+        }
+
+        static byte xTime(byte x)
+        {
+            if ((x >> 7) > 0)
+            {
+                return (byte)(((x << 1) ^ 0x1b) & 0xff);
+            }
+            else
+            {
+                return (byte)((x << 1) & 0xff);
+            }
+        }
+
+
+        static void xorReverse(byte[] x, byte[] y)
+        {
+            x[0] = (byte)(x[0] ^ y[15]);
+            x[1] = (byte)(x[1] ^ y[14]);
+            x[2] = (byte)(x[2] ^ y[13]);
+            x[3] = (byte)(x[3] ^ y[12]);
+            x[4] = (byte)(x[4] ^ y[11]);
+            x[5] = (byte)(x[5] ^ y[10]);
+            x[6] = (byte)(x[6] ^ y[9]);
+            x[7] = (byte)(x[7] ^ y[8]);
+            x[8] = (byte)(x[8] ^ y[7]);
+            x[9] = (byte)(x[9] ^ y[6]);
+            x[10] = (byte)(x[10] ^ y[5]);
+            x[11] = (byte)(x[11] ^ y[4]);
+            x[12] = (byte)(x[12] ^ y[3]);
+            x[13] = (byte)(x[13] ^ y[2]);
+            x[14] = (byte)(x[14] ^ y[1]);
+            x[15] = (byte)(x[15] ^ y[0]);
+        }
+
+
+        protected static byte[] Xor(byte[] x, byte[] y, int yStart)
+        {
+            byte[] output = new byte[16];
+            for (int i = 0; i < output.Length; i++)
+            {
+                output[i] = (byte)(x[i] ^ y[yStart++]);
+            }
+            return output;
+        }
+
+
+        static private byte[] mixColumns(byte[] s)
+        {
+            byte[] output = new byte[s.Length];
+            int j = 0, i4;
+            for (int i = 0; i < 4; i++)
+            {
+                i4 = i << 2;
+                output[j++] = (byte)(xTime(s[i4]) ^ xTime(s[i4 + 1]) ^ s[i4 + 1] ^ s[i4 + 2] ^ s[i4 + 3]);
+                output[j++] = (byte)(s[i4] ^ xTime(s[i4 + 1]) ^ xTime(s[i4 + 2]) ^ s[i4 + 2] ^ s[i4 + 3]);
+                output[j++] = (byte)(s[i4] ^ s[i4 + 1] ^ xTime(s[i4 + 2]) ^ xTime(s[i4 + 3]) ^ s[i4 + 3]);
+                output[j++] = (byte)(xTime(s[i4]) ^ s[i4] ^ s[i4 + 1] ^ s[i4 + 2] ^ xTime(s[i4 + 3]));
+            }
+
+            return output;
+        }
+
+        public int GetDigestSize()
+        {
+            return DIGEST_SIZE;
+        }
+
+        public int GetByteLength()
+        {
+            throw new NotImplementedException();
+        }
+
+        public abstract void Update(byte input);
+
+
+        public void BlockUpdate(byte[] input, int inOff, int length)
+        {
+            throw new NotImplementedException();
+        }
+
+        public abstract int DoFinal(byte[] output, int outOff);
+
+        public abstract void Reset();
+
+    }
+}
diff --git a/crypto/test/src/crypto/test/Haraka256DigestTest.cs b/crypto/test/src/crypto/test/Haraka256DigestTest.cs
new file mode 100644
index 000000000..7b8154d4c
--- /dev/null
+++ b/crypto/test/src/crypto/test/Haraka256DigestTest.cs
@@ -0,0 +1,196 @@
+using System;
+using NUnit.Framework;
+
+using Org.BouncyCastle.Crypto.Digests;
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Encoders;
+using Org.BouncyCastle.Utilities.Test;
+
+namespace BouncyCastle.Crypto.Tests
+{
+    public class Haraka256DigestTest : SimpleTest
+    {
+        public override string Name
+        {
+            get { return "Haraka 256"; }
+        }
+
+        public void TestKnownVector()
+        {
+            byte[] input = new byte[32];
+            for (int t = 0; t < input.Length; t++)
+            {
+                input[t] = (byte)t;
+            }
+
+            // From Appendix B, Haraka-256 v2, https://eprint.iacr.org/2016/098.pdf
+            byte[] expected256 = Hex.Decode("8027ccb87949774b78d0545fb72bf70c695c2a0923cbd47bba1159efbf2b2c1c");
+
+            Haraka256Digest haraka = new Haraka256Digest();
+            haraka.Update(input, 0, input.Length);
+            byte[] output = new byte[haraka.GetDigestSize()];
+            haraka.DoFinal(output, 0);
+            Assert.IsTrue(Arrays.AreEqual(expected256, output));
+        }
+
+
+        public void TestInputTooShort()
+        {
+            try
+            {
+                Haraka256Digest haraka = new Haraka256Digest();
+                byte[] input = new byte[31];
+                haraka.Update(input, 0, input.Length);
+                haraka.DoFinal(null, 0);
+                Assert.Fail("fail on input not 32 bytes.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "input must be exactly 32 bytes"));
+            }
+        }
+
+        public void TestInputTooLong()
+        {
+            try
+            {
+                Haraka256Digest haraka = new Haraka256Digest();
+                byte[] input = new byte[33];
+                haraka.Update(input, 0, input.Length);
+                haraka.DoFinal(null, 0);
+                Assert.Fail("fail on input not 32 bytes.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "total input cannot be more than 32 bytes"));
+            }
+        }
+
+        public void TestOutput()
+        {
+
+            //
+            // Buffer too short.
+            //
+            try
+            {
+                Haraka256Digest harakaCipher = new Haraka256Digest();
+                byte[] input = new byte[32];
+                harakaCipher.Update(input, 0, input.Length);
+                byte[] output = new byte[31];
+                harakaCipher.DoFinal(output, 0);
+                Assert.Fail("Output too short for digest result.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "output too short to receive digest"));
+            }
+
+            //
+            // Offset puts end past length of buffer.
+            //
+            try
+            {
+                Haraka256Digest harakaCipher = new Haraka256Digest();
+                byte[] input = new byte[32];
+                harakaCipher.Update(input, 0, input.Length);
+                byte[] output = new byte[48];
+                harakaCipher.DoFinal(output, 17);
+                Assert.Fail("Output too short for digest result.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "output too short to receive digest"));
+            }
+
+            //
+            // Offset output..
+            //
+            try
+            {
+                byte[] input = new byte[32];
+                for (int t = 0; t < input.Length; t++)
+                {
+                    input[t] = (byte)t;
+                }
+
+                byte[] expected256 = Hex.Decode("000000008027ccb87949774b78d0545fb72bf70c695c2a0923cbd47bba1159efbf2b2c1c");
+
+                Haraka256Digest harakaCipher = new Haraka256Digest();
+                harakaCipher.Update(input, 0, input.Length);
+                byte[] output = new byte[harakaCipher.GetDigestSize() + 4];
+                harakaCipher.DoFinal(output, 4);
+                Assert.IsTrue(Arrays.AreEqual(expected256, output));
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "output too short to receive digest"));
+            }
+        }
+
+        void TestMonty()
+        {
+            int c = 0;
+            string[][] vectors = new string[][]{new string[]
+            {
+                "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F",
+                "e78599d7163ab58f1c90f0171c6fc4e852eb4b8cc29a4af63194fd9977c1de84"
+            },
+            new string[]{
+                "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
+                "c4cebda63c00c4cd312f36ea92afd4b0f6048507c5b367326ef9d8fdd2d5c09a"
+            }
+            };
+
+            for (int i = 0; i != vectors.Length; i++)
+            {
+                //
+                // 1000 rounds of digest application, where alternative outputs are copied over alternate halves of the input.
+                //
+                string[] vector = vectors[i];
+
+                byte[] expected = Hex.Decode(vector[1]);
+
+                // Load initial message.
+
+                Haraka256Digest haraka = new Haraka256Digest();
+                byte[] result = Hex.Decode(vector[0]);
+                for (int t = 0; t < 1000; t++)
+                {
+                    haraka.Update(result, 0, result.Length);
+                    haraka.DoFinal(result, 0);
+                }
+                Assert.IsTrue(Arrays.AreEqual(expected, result));
+
+                //
+                // Deliberately introduce incorrect value.
+                //
+
+                result[0] ^= 1;
+                Assert.IsTrue(!Arrays.AreEqual(expected, result));
+                c++;
+            }
+        }
+
+        private bool Contains(string message, string sub)
+        {
+            return message.IndexOf(sub) >= 0;
+        }
+
+        public override void PerformTest()
+        {
+            TestKnownVector();
+            TestInputTooLong();
+            TestInputTooShort();
+            TestOutput();
+            TestMonty();
+        }
+
+        //public static void Main()
+        //{
+        //    //runTest(new Haraka256DigestTest());
+        //    var t = new Haraka256DigestTest();
+        //    t.PerformTest();
+        //}
+    }
+}
\ No newline at end of file
diff --git a/crypto/test/src/crypto/test/Haraka512DigestTest.cs b/crypto/test/src/crypto/test/Haraka512DigestTest.cs
new file mode 100644
index 000000000..634b20724
--- /dev/null
+++ b/crypto/test/src/crypto/test/Haraka512DigestTest.cs
@@ -0,0 +1,192 @@
+using System;
+using NUnit.Framework;
+
+using Org.BouncyCastle.Crypto.Digests;
+using Org.BouncyCastle.Utilities;
+using Org.BouncyCastle.Utilities.Encoders;
+using Org.BouncyCastle.Utilities.Test;
+
+namespace BouncyCastle.Crypto.Tests
+{
+    public class Haraka512DigestTest : SimpleTest
+    {
+        public override string Name
+        {
+            get { return "Haraka 512"; }
+        }
+
+        public void TestKnownVector()
+        {
+            byte[] input = new byte[64];
+            for (int t = 0; t < input.Length; t++)
+            {
+                input[t] = (byte)t;
+            }
+
+            // From Appendix B, Haraka-512 v2, https://eprint.iacr.org/2016/098.pdf
+            byte[] expected512 = Hex.Decode("be7f723b4e80a99813b292287f306f625a6d57331cae5f34dd9277b0945be2aa");
+
+            Haraka512Digest haraka = new Haraka512Digest();
+            haraka.Update(input, 0, input.Length);
+            byte[] output = new byte[haraka.GetDigestSize()];
+            haraka.DoFinal(output, 0);
+            Assert.IsTrue(Arrays.AreEqual(expected512, output));
+        }
+
+        public void TestInputTooShort()
+        {
+            try
+            {
+                Haraka512Digest haraka = new Haraka512Digest();
+                byte[] input = new byte[63];
+                haraka.Update(input, 0, input.Length);
+                haraka.DoFinal(null, 0);
+                Assert.Fail("fail on input not 64 bytes.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "input must be exactly 64 bytes"));
+            }
+        }
+
+        public void TestInputTooLong()
+        {
+            try
+            {
+                Haraka512Digest haraka = new Haraka512Digest();
+                byte[] input = new byte[65];
+                haraka.Update(input, 0, input.Length);
+                haraka.DoFinal(null, 0);
+                Assert.Fail("fail on input not 64 bytes.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "total input cannot be more than 64 bytes"));
+            }
+        }
+
+        public void TestOutput()
+        {
+            //
+            // Buffer too short.
+            //
+            try
+            {
+                Haraka512Digest haraka = new Haraka512Digest();
+                byte[] input = new byte[64];
+                haraka.Update(input, 0, input.Length);
+                byte[] output = new byte[31];
+                haraka.DoFinal(output, 0);
+                Assert.Fail("Output too short for digest result.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "output too short to receive digest"));
+            }
+
+            //
+            // Offset puts end past length of buffer.
+            //
+            try
+            {
+                Haraka512Digest haraka = new Haraka512Digest();
+                byte[] input = new byte[64];
+                haraka.Update(input, 0, input.Length);
+                byte[] output = new byte[48];
+                haraka.DoFinal(output, 17);
+                Assert.Fail("Output too short for digest result.");
+            }
+            catch (ArgumentException e)
+            {
+                Assert.IsTrue(Contains(e.Message, "output too short to receive digest"));
+            }
+
+            //
+            // Offset output..
+            //
+            {
+                byte[] input = new byte[64];
+                for (int t = 0; t < input.Length; t++)
+                {
+                    input[t] = (byte)t;
+                }
+
+                byte[] expected512 = Hex.Decode("00000000be7f723b4e80a99813b292287f306f625a6d57331cae5f34dd9277b0945be2aa");
+
+                Haraka512Digest haraka = new Haraka512Digest();
+                haraka.Update(input, 0, input.Length);
+                byte[] output = new byte[haraka.GetDigestSize() + 4];
+                haraka.DoFinal(output, 4);
+                Assert.IsTrue(Arrays.AreEqual(expected512, output));
+            }
+
+        }
+
+        void TestMonty()
+        {
+            int c = 0;
+            string[][] vectors = new string[][]{
+            new string[]{
+                "000102030405060708090A0B0C0D0E0F101112131415161718191A1B1C1D1E1F202122232425262728292A2B2C2D2E2F303132333435363738393A3B3C3D3E3F",
+                "ABE210FE673F3B28E70E5100C476D82F61A7E2BDB3D8423FB0A15E5DE3D3A4DE"
+            },
+            new string[]{
+                "FFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFFF",
+                "5F5ECB52C61F5036C96BE555D2E18C520AB3ED093954700C283A322D14DBFE02"
+            }
+        };
+
+            for (int i = 0; i != vectors.Length; i++)
+            {
+                //
+                // 1000 rounds of digest application, where alternative outputs are copied over alternate halves of the input.
+                //
+                string[] vector = vectors[i];
+
+                byte[] expected = Hex.Decode(vector[1]);
+
+                // Load initial message.
+                byte[] input = Hex.Decode(vector[0]);
+                Haraka512Digest haraka = new Haraka512Digest();
+                byte[] result = new byte[haraka.GetDigestSize()];
+                for (int t = 0; t < 1000; t++)
+                {
+                    haraka.Update(input, 0, input.Length);
+                    haraka.DoFinal(result, 0);
+
+                    if ((t & 0x01) == 1)
+                    {
+                        Array.Copy(result, 0, input, 0, result.Length);
+                    }
+                    else
+                    {
+                        Array.Copy(result, 0, input, result.Length, result.Length);
+                    }
+                }
+                Assert.IsTrue(Arrays.AreEqual(expected, result));
+
+                //
+                // Deliberately introduce incorrect value.
+                //
+
+                result[0] ^= 1;
+                Assert.IsTrue(!Arrays.AreEqual(expected, result));
+                c++;
+            }
+        }
+
+        private bool Contains(string message, string sub)
+        {
+            return message.IndexOf(sub) >= 0;
+        }
+
+        public override void PerformTest()
+        {
+            TestKnownVector();
+            TestInputTooLong();
+            TestInputTooShort();
+            TestOutput();
+            TestMonty();
+        }
+    }
+}
\ No newline at end of file