From d6e580d43fd6ba511db3c47eed53c64c07d3c734 Mon Sep 17 00:00:00 2001
From: pooler <pooler@litecoinpool.org>
Date: Fri, 24 May 2013 11:19:56 +0200
Subject: [PATCH] Litecoin: Adapt scrypt code to C++

---
 src/scrypt.cpp |  4 ++--
 src/scrypt.h   | 10 +---------
 2 files changed, 3 insertions(+), 11 deletions(-)

diff --git a/src/scrypt.cpp b/src/scrypt.cpp
index a7db3e702..da3d0e21b 100644
--- a/src/scrypt.cpp
+++ b/src/scrypt.cpp
@@ -73,11 +73,11 @@ typedef struct HMAC_SHA256Context {
 
 /* Initialize an HMAC-SHA256 operation with the given key. */
 static void
-HMAC_SHA256_Init(HMAC_SHA256_CTX *ctx, const unsigned char *_K, size_t Klen)
+HMAC_SHA256_Init(HMAC_SHA256_CTX *ctx, const void *_K, size_t Klen)
 {
 	unsigned char pad[64];
 	unsigned char khash[32];
-	const unsigned char *K = _K;
+	const unsigned char *K = (const unsigned char *)_K;
 	size_t i;
 
 	/* If Klen > 64, the key is really SHA256(K). */
diff --git a/src/scrypt.h b/src/scrypt.h
index 4f9c2e337..da53b2e7c 100644
--- a/src/scrypt.h
+++ b/src/scrypt.h
@@ -1,17 +1,9 @@
 #ifndef SCRYPT_H
 #define SCRYPT_H
 
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define SCRYPT_SCRATCHPAD_SIZE (131072 + 63)
+static const int SCRYPT_SCRATCHPAD_SIZE = 131072 + 63;
 
 void scrypt_1024_1_1_256_sp(const char *input, char *output, char *scratchpad);
 void scrypt_1024_1_1_256(const char *input, char *output);
 
-#ifdef __cplusplus
-}
-#endif
-
 #endif