From 78c228c6e5f35b6f2e1917d8677694779f837618 Mon Sep 17 00:00:00 2001
From: Cory Fields <cory-nospam-@coryfields.com>
Date: Tue, 28 Oct 2014 17:35:24 -0400
Subject: boost: moveonly: move BIP32Hash to hash.h

---
 src/hash.cpp | 13 +++++++++++++
 1 file changed, 13 insertions(+)

(limited to 'src/hash.cpp')

diff --git a/src/hash.cpp b/src/hash.cpp
index 218607a6fd..29376b45aa 100644
--- a/src/hash.cpp
+++ b/src/hash.cpp
@@ -63,3 +63,16 @@ unsigned int MurmurHash3(unsigned int nHashSeed, const std::vector<unsigned char
 
     return h1;
 }
+
+void BIP32Hash(const unsigned char chainCode[32], unsigned int nChild, unsigned char header, const unsigned char data[32], unsigned char output[64])
+{
+    unsigned char num[4];
+    num[0] = (nChild >> 24) & 0xFF;
+    num[1] = (nChild >> 16) & 0xFF;
+    num[2] = (nChild >>  8) & 0xFF;
+    num[3] = (nChild >>  0) & 0xFF;
+    CHMAC_SHA512(chainCode, 32).Write(&header, 1)
+                               .Write(data, 32)
+                               .Write(num, 4)
+                               .Finalize(output);
+}
-- 
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