diff --git a/Source/sha.cpp b/Source/sha.cpp
index 38d84f91a..472c88d20 100644
--- a/Source/sha.cpp
+++ b/Source/sha.cpp
@@ -5,53 +5,27 @@
  */
 #include "all.h"
 
-SHA1Context sgSHA1[3];
-
-void SHA1Clear()
-{
-	memset(sgSHA1, 0, sizeof(sgSHA1));
-}
+/**
+ *  Define the SHA1 circular left shift macro
+ */
+#define SHA1CircularShift(bits, word) \
+	(((word) << (bits)) | ((word) >> (32 - (bits))))
 
-void SHA1Result(int n, char Message_Digest[SHA1HashSize])
-{
-	DWORD *Message_Digest_Block;
-	int i;
 
-	Message_Digest_Block = (DWORD *)Message_Digest;
-	if (Message_Digest) {
-		for (i = 0; i < 5; i++) {
-			*Message_Digest_Block = sgSHA1[n].state[i];
-			Message_Digest_Block++;
-		}
-	}
-}
-
-void SHA1Calculate(int n, const char *data, char Message_Digest[SHA1HashSize])
-{
-	SHA1Input(&sgSHA1[n], data, 64);
-	if (Message_Digest)
-		SHA1Result(n, Message_Digest);
-}
+SHA1Context sgSHA1[3];
 
-void SHA1Input(SHA1Context *context, const char *message_array, int len)
+static void SHA1Init(SHA1Context *context)
 {
-	int i, count;
-
-	count = context->count[0] + 8 * len;
-	if (count < context->count[0])
-		context->count[1]++;
-
-	context->count[0] = count;
-	context->count[1] += len >> 29;
-
-	for (i = len; i >= 64; i -= 64) {
-		memcpy(context->buffer, message_array, sizeof(context->buffer));
-		SHA1ProcessMessageBlock(context);
-		message_array += 64;
-	}
+	context->count[0] = 0;
+	context->count[1] = 0;
+	context->state[0] = 0x67452301;
+	context->state[1] = 0xEFCDAB89;
+	context->state[2] = 0x98BADCFE;
+	context->state[3] = 0x10325476;
+	context->state[4] = 0xC3D2E1F0;
 }
 
-void SHA1ProcessMessageBlock(SHA1Context *context)
+static void SHA1ProcessMessageBlock(SHA1Context *context)
 {
 	int i, temp;
 	int W[80];
@@ -114,18 +88,51 @@ void SHA1ProcessMessageBlock(SHA1Context *context)
 	context->state[4] += E;
 }
 
-void SHA1Reset(int n)
+static void SHA1Input(SHA1Context *context, const char *message_array, int len)
 {
-	SHA1Init(&sgSHA1[n]);
+	int i, count;
+
+	count = context->count[0] + 8 * len;
+	if (count < context->count[0])
+		context->count[1]++;
+
+	context->count[0] = count;
+	context->count[1] += len >> 29;
+
+	for (i = len; i >= 64; i -= 64) {
+		memcpy(context->buffer, message_array, sizeof(context->buffer));
+		SHA1ProcessMessageBlock(context);
+		message_array += 64;
+	}
 }
 
-void SHA1Init(SHA1Context *context)
+void SHA1Clear()
 {
-	context->count[0] = 0;
-	context->count[1] = 0;
-	context->state[0] = 0x67452301;
-	context->state[1] = 0xEFCDAB89;
-	context->state[2] = 0x98BADCFE;
-	context->state[3] = 0x10325476;
-	context->state[4] = 0xC3D2E1F0;
+	memset(sgSHA1, 0, sizeof(sgSHA1));
+}
+
+void SHA1Result(int n, char Message_Digest[SHA1HashSize])
+{
+	DWORD *Message_Digest_Block;
+	int i;
+
+	Message_Digest_Block = (DWORD *)Message_Digest;
+	if (Message_Digest) {
+		for (i = 0; i < 5; i++) {
+			*Message_Digest_Block = sgSHA1[n].state[i];
+			Message_Digest_Block++;
+		}
+	}
+}
+
+void SHA1Calculate(int n, const char *data, char Message_Digest[SHA1HashSize])
+{
+	SHA1Input(&sgSHA1[n], data, 64);
+	if (Message_Digest)
+		SHA1Result(n, Message_Digest);
+}
+
+void SHA1Reset(int n)
+{
+	SHA1Init(&sgSHA1[n]);
 }
diff --git a/Source/sha.h b/Source/sha.h
index 7dc287743..e88f34b92 100644
--- a/Source/sha.h
+++ b/Source/sha.h
@@ -6,21 +6,11 @@
 #ifndef __SHA_H__
 #define __SHA_H__
 
-/**
- *  Define the SHA1 circular left shift macro
- */
-#define SHA1CircularShift(bits, word) \
-	(((word) << (bits)) | ((word) >> (32 - (bits))))
 #define SHA1HashSize 20
 
-//sha
-
 void SHA1Clear();
 void SHA1Result(int n, char Message_Digest[SHA1HashSize]);
 void SHA1Calculate(int n, const char *data, char Message_Digest[SHA1HashSize]);
-void SHA1Input(SHA1Context *context, const char *message_array, int len);
-void SHA1ProcessMessageBlock(SHA1Context *context);
 void SHA1Reset(int n);
-void SHA1Init(SHA1Context *context);
 
 #endif /* __SHA_H__ */