Initial shavite3 support

Author: lucasjones

binding.gyp

@@ -17,6 +17,7 @@
                 "fugue.c",
                 "qubit.c",
                 "hefty1.c",
+                "shavite3.c",
                 "sha3/sph_hefty1.c",
                 "sha3/sph_fugue.c",
                 "sha3/aes_helper.c",

keccak.c

@@ -1,14 +1,10 @@
 #include "keccak.h"
-#include <stdlib.h>
-#include <stdint.h>
-#include <string.h>
-#include <stdio.h>
 
 #include "sha3/sph_types.h"
 #include "sha3/sph_keccak.h"
 
 
-void keccak_hash(const char* input, char* output, unsigned int size)
+void keccak_hash(const char* input, char* output, uint32_t size)
 {
     sph_keccak256_context ctx_keccak;
     sph_keccak256_init(&ctx_keccak);

keccak.h

@@ -5,7 +5,9 @@
 extern "C" {
 #endif
 
-void keccak_hash(const char* input, char* output, unsigned int size);
+#include <stdint.h>
+
+void keccak_hash(const char* input, char* output, uint32_t size);
 
 #ifdef __cplusplus
 }

multihashing.cc

@@ -17,6 +17,7 @@ extern "C" {
     #include "fugue.h"
     #include "qubit.h"
     #include "hefty1.h"
+    #include "shavite3.h"
 }
 
 using namespace node;
@@ -360,6 +361,29 @@ Handle<Value> hefty1(const Arguments& args) {
     return scope.Close(buff->handle_);
 }
 
+
+Handle<Value> shavite3(const Arguments& args) {
+    HandleScope scope;
+
+    if (args.Length() < 1)
+        return except("You must provide one argument.");
+
+    Local<Object> target = args[0]->ToObject();
+
+    if(!Buffer::HasInstance(target))
+        return except("Argument should be a buffer object.");
+
+    char * input = Buffer::Data(target);
+    char * output = new char[32];
+    
+    uint32_t input_len = Buffer::Length(target);
+
+    shavite3_hash(input, output, input_len);
+
+    Buffer* buff = Buffer::New(output, 32);
+    return scope.Close(buff->handle_);
+}
+
 void init(Handle<Object> exports) {
     exports->Set(String::NewSymbol("quark"), FunctionTemplate::New(quark)->GetFunction());
     exports->Set(String::NewSymbol("x11"), FunctionTemplate::New(x11)->GetFunction());
@@ -375,6 +399,7 @@ void init(Handle<Object> exports) {
     exports->Set(String::NewSymbol("fugue"), FunctionTemplate::New(fugue)->GetFunction());
     exports->Set(String::NewSymbol("qubit"), FunctionTemplate::New(qubit)->GetFunction());
     exports->Set(String::NewSymbol("hefty1"), FunctionTemplate::New(hefty1)->GetFunction());
+    exports->Set(String::NewSymbol("shavite3"), FunctionTemplate::New(shavite3)->GetFunction());
 }
 
 NODE_MODULE(multihashing, init)

shavite3.c

@@ -0,0 +1,24 @@
+#include "shavite3.h"
+
+#include "sha3/sph_shavite.h"
+
+void shavite3_hash(const char* input, char* output, uint32_t len)
+{
+    char* hash1 = (char*) malloc(64);
+    char* hash2 = (char*) malloc(64);
+    
+    sph_shavite512_context ctx_shavite;
+    
+    sph_shavite512_init(&ctx_shavite);
+    sph_shavite512(&ctx_shavite, (const void*) input, len);
+    sph_shavite512_close(&ctx_shavite, (void*) hash1);
+    
+    sph_shavite512(&ctx_shavite, (const void*) hash1, 64);
+    sph_shavite512_close(&ctx_shavite, (void*) hash2);
+
+    memcpy(output, hash2, 32);
+    
+    free(hash1);
+    free(hash2);
+}
+

shavite3.h

@@ -0,0 +1,16 @@
+#ifndef SHAVITE_H
+#define SHAVITE_H
+
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+#include <stdint.h>
+
+void shavite3_hash(const char* input, char* output, uint32_t len);
+
+#ifdef __cplusplus
+}
+#endif
+
+#endif

x11.h

@@ -5,6 +5,8 @@
 extern "C" {
 #endif
 
+#include <stdint.h>
+
 void x11_hash(const char* input, char* output, uint32_t len);
 
 #ifdef __cplusplus