Add Chukwa support

src/crypto/Argon2_constants.h

@@ -0,0 +1,72 @@
+#ifndef XMRIG_ARGON2_CONSTANTS_H
+#define XMRIG_ARGON2_CONSTANTS_H
+
+
+#include <stddef.h>
+#include <stdint.h>
+
+
+#include "common/xmrig.h"
+
+namespace xmrig
+{
+    enum Argon2Algo {
+        I = 0,
+        D = 1,
+        ID = 2
+    };
+
+    constexpr const size_t    ARGON2_SALTLEN                  = 16;
+    constexpr const size_t    ARGON2_HASHLEN                  = 32;
+
+    constexpr const size_t    ARGON2_MEMORY_CHUKWA            = 512;
+    constexpr const size_t    ARGON2_ITERS_CHUKWA             = 3;
+    constexpr const size_t    ARGON2_PARALLELISM_CHUKWA       = 1;
+    constexpr const int       ARGON2_ALGO_CHUKWA              = Argon2Algo::ID;
+
+    inline int argon2_select_algo(Variant variant)
+    {
+        switch (variant)
+        {
+            case VARIANT_CHUKWA:
+                return ARGON2_ALGO_CHUKWA;
+        }
+
+        return 0;
+    }
+
+    inline uint32_t argon2_select_memory(Variant variant)
+    {
+        switch (variant)
+        {
+            case VARIANT_CHUKWA:
+                return ARGON2_MEMORY_CHUKWA;
+        }
+
+        return 0;
+    }
+
+    inline uint32_t argon2_select_iters(Variant variant)
+    {
+        switch (variant)
+        {
+            case VARIANT_CHUKWA:
+                return ARGON2_ITERS_CHUKWA;
+        }
+
+        return 0;
+    }
+
+    inline uint32_t argon2_select_parallelism(Variant variant)
+    {
+        switch (variant)
+        {
+            case VARIANT_CHUKWA:
+                return ARGON2_PARALLELISM_CHUKWA;
+        }
+
+        return 0;
+    }
+}
+
+#endif