From 3438e5d3ddf8444f0e31009ffbe8237ef3752c22 Mon Sep 17 00:00:00 2001
From: Alexander Harkness <bearbin@gmail.com>
Date: Sun, 24 Nov 2013 14:21:13 +0000
Subject: move cryptopp into lib

---
 lib/cryptopp/tiger.cpp | 265 +++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 265 insertions(+)
 create mode 100644 lib/cryptopp/tiger.cpp

(limited to 'lib/cryptopp/tiger.cpp')

diff --git a/lib/cryptopp/tiger.cpp b/lib/cryptopp/tiger.cpp
new file mode 100644
index 000000000..c6c05caed
--- /dev/null
+++ b/lib/cryptopp/tiger.cpp
@@ -0,0 +1,265 @@
+// tiger.cpp - written and placed in the public domain by Wei Dai
+
+#include "pch.h"
+#include "tiger.h"
+#include "misc.h"
+#include "cpu.h"
+
+NAMESPACE_BEGIN(CryptoPP)
+
+void Tiger::InitState(HashWordType *state)
+{
+	state[0] = W64LIT(0x0123456789ABCDEF);
+	state[1] = W64LIT(0xFEDCBA9876543210);
+	state[2] = W64LIT(0xF096A5B4C3B2E187);
+}
+
+void Tiger::TruncatedFinal(byte *hash, size_t size)
+{
+	ThrowIfInvalidTruncatedSize(size);
+
+	PadLastBlock(56, 0x01);
+	CorrectEndianess(m_data, m_data, 56);
+
+	m_data[7] = GetBitCountLo();
+
+	Transform(m_state, m_data);
+	CorrectEndianess(m_state, m_state, DigestSize());
+	memcpy(hash, m_state, size);
+
+	Restart();		// reinit for next use
+}
+
+void Tiger::Transform (word64 *digest, const word64 *X)
+{
+#if CRYPTOPP_BOOL_SSE2_ASM_AVAILABLE && CRYPTOPP_BOOL_X86
+	if (HasSSE2())
+	{
+#ifdef __GNUC__
+		__asm__ __volatile__
+		(
+		".intel_syntax noprefix;"
+		AS1(	push	ebx)
+#else
+	#if _MSC_VER < 1300
+		const word64 *t = table;
+		AS2(	mov		edx, t)
+	#else
+		AS2(	lea		edx, [table])
+	#endif
+		AS2(	mov		eax, digest)
+		AS2(	mov		esi, X)
+#endif
+		AS2(	movq	mm0, [eax])
+		AS2(	movq	mm1, [eax+1*8])
+		AS2(	movq	mm5, mm1)
+		AS2(	movq	mm2, [eax+2*8])
+		AS2(	movq	mm7, [edx+4*2048+0*8])
+		AS2(	movq	mm6, [edx+4*2048+1*8])
+		AS2(	mov		ecx, esp)
+		AS2(	and		esp, 0xfffffff0)
+		AS2(	sub		esp, 8*8)
+		AS1(	push	ecx)
+
+#define SSE2_round(a,b,c,x,mul) \
+		AS2(	pxor	c, [x])\
+		AS2(	movd	ecx, c)\
+		AS2(	movzx	edi, cl)\
+		AS2(	movq	mm3, [edx+0*2048+edi*8])\
+		AS2(	movzx	edi, ch)\
+		AS2(	movq	mm4, [edx+3*2048+edi*8])\
+		AS2(	shr		ecx, 16)\
+		AS2(	movzx	edi, cl)\
+		AS2(	pxor	mm3, [edx+1*2048+edi*8])\
+		AS2(	movzx	edi, ch)\
+		AS2(	pxor	mm4, [edx+2*2048+edi*8])\
+		AS3(	pextrw	ecx, c, 2)\
+		AS2(	movzx	edi, cl)\
+		AS2(	pxor	mm3, [edx+2*2048+edi*8])\
+		AS2(	movzx	edi, ch)\
+		AS2(	pxor	mm4, [edx+1*2048+edi*8])\
+		AS3(	pextrw	ecx, c, 3)\
+		AS2(	movzx	edi, cl)\
+		AS2(	pxor	mm3, [edx+3*2048+edi*8])\
+		AS2(	psubq	a, mm3)\
+		AS2(	movzx	edi, ch)\
+		AS2(	pxor	mm4, [edx+0*2048+edi*8])\
+		AS2(	paddq	b, mm4)\
+		SSE2_mul_##mul(b)
+
+#define SSE2_mul_5(b)	\
+		AS2(	movq	mm3, b)\
+		AS2(	psllq	b, 2)\
+		AS2(	paddq	b, mm3)
+
+#define SSE2_mul_7(b)	\
+		AS2(	movq	mm3, b)\
+		AS2(	psllq	b, 3)\
+		AS2(	psubq	b, mm3)
+
+#define SSE2_mul_9(b)	\
+		AS2(	movq	mm3, b)\
+		AS2(	psllq	b, 3)\
+		AS2(	paddq	b, mm3)
+
+#define label2_5 1
+#define label2_7 2
+#define label2_9 3
+
+#define SSE2_pass(A,B,C,mul,X)	\
+		AS2(	xor		ebx, ebx)\
+		ASL(mul)\
+		SSE2_round(A,B,C,X+0*8+ebx,mul)\
+		SSE2_round(B,C,A,X+1*8+ebx,mul)\
+		AS2(	cmp		ebx, 6*8)\
+		ASJ(	je,		label2_##mul, f)\
+		SSE2_round(C,A,B,X+2*8+ebx,mul)\
+		AS2(	add		ebx, 3*8)\
+		ASJ(	jmp,	mul, b)\
+		ASL(label2_##mul)
+
+#define SSE2_key_schedule(Y,X) \
+		AS2(	movq	mm3, [X+7*8])\
+		AS2(	pxor	mm3, mm6)\
+		AS2(	movq	mm4, [X+0*8])\
+		AS2(	psubq	mm4, mm3)\
+		AS2(	movq	[Y+0*8], mm4)\
+		AS2(	pxor	mm4, [X+1*8])\
+		AS2(	movq	mm3, mm4)\
+		AS2(	movq	[Y+1*8], mm4)\
+		AS2(	paddq	mm4, [X+2*8])\
+		AS2(	pxor	mm3, mm7)\
+		AS2(	psllq	mm3, 19)\
+		AS2(	movq	[Y+2*8], mm4)\
+		AS2(	pxor	mm3, mm4)\
+		AS2(	movq	mm4, [X+3*8])\
+		AS2(	psubq	mm4, mm3)\
+		AS2(	movq	[Y+3*8], mm4)\
+		AS2(	pxor	mm4, [X+4*8])\
+		AS2(	movq	mm3, mm4)\
+		AS2(	movq	[Y+4*8], mm4)\
+		AS2(	paddq	mm4, [X+5*8])\
+		AS2(	pxor	mm3, mm7)\
+		AS2(	psrlq	mm3, 23)\
+		AS2(	movq	[Y+5*8], mm4)\
+		AS2(	pxor	mm3, mm4)\
+		AS2(	movq	mm4, [X+6*8])\
+		AS2(	psubq	mm4, mm3)\
+		AS2(	movq	[Y+6*8], mm4)\
+		AS2(	pxor	mm4, [X+7*8])\
+		AS2(	movq	mm3, mm4)\
+		AS2(	movq	[Y+7*8], mm4)\
+		AS2(	paddq	mm4, [Y+0*8])\
+		AS2(	pxor	mm3, mm7)\
+		AS2(	psllq	mm3, 19)\
+		AS2(	movq	[Y+0*8], mm4)\
+		AS2(	pxor	mm3, mm4)\
+		AS2(	movq	mm4, [Y+1*8])\
+		AS2(	psubq	mm4, mm3)\
+		AS2(	movq	[Y+1*8], mm4)\
+		AS2(	pxor	mm4, [Y+2*8])\
+		AS2(	movq	mm3, mm4)\
+		AS2(	movq	[Y+2*8], mm4)\
+		AS2(	paddq	mm4, [Y+3*8])\
+		AS2(	pxor	mm3, mm7)\
+		AS2(	psrlq	mm3, 23)\
+		AS2(	movq	[Y+3*8], mm4)\
+		AS2(	pxor	mm3, mm4)\
+		AS2(	movq	mm4, [Y+4*8])\
+		AS2(	psubq	mm4, mm3)\
+		AS2(	movq	[Y+4*8], mm4)\
+		AS2(	pxor	mm4, [Y+5*8])\
+		AS2(	movq	[Y+5*8], mm4)\
+		AS2(	paddq	mm4, [Y+6*8])\
+		AS2(	movq	[Y+6*8], mm4)\
+		AS2(	pxor	mm4, [edx+4*2048+2*8])\
+		AS2(	movq	mm3, [Y+7*8])\
+		AS2(	psubq	mm3, mm4)\
+		AS2(	movq	[Y+7*8], mm3)
+
+		SSE2_pass(mm0, mm1, mm2, 5, esi)
+		SSE2_key_schedule(esp+4, esi)
+		SSE2_pass(mm2, mm0, mm1, 7, esp+4)
+		SSE2_key_schedule(esp+4, esp+4)
+		SSE2_pass(mm1, mm2, mm0, 9, esp+4)
+
+		AS2(	pxor	mm0, [eax+0*8])
+		AS2(	movq	[eax+0*8], mm0)
+		AS2(	psubq	mm1, mm5)
+		AS2(	movq	[eax+1*8], mm1)
+		AS2(	paddq	mm2, [eax+2*8])
+		AS2(	movq	[eax+2*8], mm2)
+
+		AS1(	pop		esp)
+		AS1(	emms)
+#ifdef __GNUC__
+		AS1(	pop		ebx)
+		".att_syntax prefix;"
+			:
+			: "a" (digest), "S" (X), "d" (table)
+			: "%ecx", "%edi", "memory", "cc"
+		);
+#endif
+	}
+	else
+#endif
+	{
+		word64 a = digest[0];
+		word64 b = digest[1];
+		word64 c = digest[2];
+		word64 Y[8];
+
+#define t1 (table)
+#define t2 (table+256)
+#define t3 (table+256*2)
+#define t4 (table+256*3)
+
+#define round(a,b,c,x,mul) \
+	c ^= x; \
+	a -= t1[GETBYTE(c,0)] ^ t2[GETBYTE(c,2)] ^ t3[GETBYTE(c,4)] ^ t4[GETBYTE(c,6)]; \
+	b += t4[GETBYTE(c,1)] ^ t3[GETBYTE(c,3)] ^ t2[GETBYTE(c,5)] ^ t1[GETBYTE(c,7)]; \
+	b *= mul
+
+#define pass(a,b,c,mul,X) {\
+	int i=0;\
+	while (true)\
+	{\
+		round(a,b,c,X[i+0],mul); \
+		round(b,c,a,X[i+1],mul); \
+		if (i==6)\
+			break;\
+		round(c,a,b,X[i+2],mul); \
+		i+=3;\
+	}}
+
+#define key_schedule(Y,X) \
+	Y[0] = X[0] - (X[7]^W64LIT(0xA5A5A5A5A5A5A5A5)); \
+	Y[1] = X[1] ^ Y[0]; \
+	Y[2] = X[2] + Y[1]; \
+	Y[3] = X[3] - (Y[2] ^ ((~Y[1])<<19)); \
+	Y[4] = X[4] ^ Y[3]; \
+	Y[5] = X[5] + Y[4]; \
+	Y[6] = X[6] - (Y[5] ^ ((~Y[4])>>23)); \
+	Y[7] = X[7] ^ Y[6]; \
+	Y[0] += Y[7]; \
+	Y[1] -= Y[0] ^ ((~Y[7])<<19); \
+	Y[2] ^= Y[1]; \
+	Y[3] += Y[2]; \
+	Y[4] -= Y[3] ^ ((~Y[2])>>23); \
+	Y[5] ^= Y[4]; \
+	Y[6] += Y[5]; \
+	Y[7] -= Y[6] ^ W64LIT(0x0123456789ABCDEF)
+
+		pass(a,b,c,5,X);
+		key_schedule(Y,X);
+		pass(c,a,b,7,Y);
+		key_schedule(Y,Y);
+		pass(b,c,a,9,Y);
+
+		digest[0] = a ^ digest[0];
+		digest[1] = b - digest[1];
+		digest[2] = c + digest[2];
+	}
+}
+
+NAMESPACE_END
-- 
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