- initial import

src/libs/ice/ICEHMAC.cpp

@@ -0,0 +1,65 @@
+//******************************************************************************
+//* HMAC_SHA1.cpp : Implementation of HMAC SHA1 algorithm
+//*                 Comfort to RFC 2104
+//*
+//******************************************************************************
+
+#include <iostream>
+#include <memory>
+#include "ICEHMAC.h"
+#include "ICESHA1.h"
+
+void ICEHMAC::GetDigest(unsigned char *text, int text_len, unsigned char *key, int key_len, unsigned char *digest)
+{
+	memset(SHA1_Key, 0, SHA1_BLOCK_SIZE);
+
+	/* repeated 64 times for values in ipad and opad */
+	memset(m_ipad, 0x36, sizeof(m_ipad));
+	memset(m_opad, 0x5c, sizeof(m_opad));
+
+	/* STEP 1 */
+	if (key_len > SHA1_DIGEST_LENGTH)
+	{
+		ICESHA1::Reset();
+		ICESHA1::Update((UINT_8 *)key, key_len);
+		ICESHA1::Final();
+
+		ICESHA1::GetHash((UINT_8 *)SHA1_Key);
+	}
+	else
+		memcpy(SHA1_Key, key, key_len);
+
+	/* STEP 2 */
+	for (int i=0; i<sizeof(m_ipad); i++)
+	{
+		m_ipad[i] ^= SHA1_Key[i];		
+	}
+
+	/* STEP 3 */
+	memcpy(AppendBuf1, m_ipad, sizeof(m_ipad));
+	memcpy(AppendBuf1 + sizeof(m_ipad), text, text_len);
+
+	/* STEP 4 */
+	ICESHA1::Reset();
+	ICESHA1::Update((unsigned char *)AppendBuf1, sizeof(m_ipad) + text_len);
+	ICESHA1::Final();
+
+	ICESHA1::GetHash((unsigned char *)szReport);
+
+	/* STEP 5 */
+	for (int j=0; j<sizeof(m_opad); j++)
+	{
+		m_opad[j] ^= SHA1_Key[j];
+	}
+
+	/* STEP 6 */
+	memcpy(AppendBuf2, m_opad, sizeof(m_opad));
+	memcpy(AppendBuf2 + sizeof(m_opad), szReport, SHA1_DIGEST_LENGTH);
+
+	/*STEP 7 */
+	ICESHA1::Reset();
+	ICESHA1::Update((unsigned char*)AppendBuf2, sizeof(m_opad) + SHA1_DIGEST_LENGTH);
+	ICESHA1::Final();
+
+	ICESHA1::GetHash((unsigned char *)digest);
+}