gcm128.c 46.5 KB
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/* ====================================================================
 * Copyright (c) 2010 The OpenSSL Project.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 *
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer. 
 *
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in
 *    the documentation and/or other materials provided with the
 *    distribution.
 *
 * 3. All advertising materials mentioning features or use of this
 *    software must display the following acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
 *
 * 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
 *    endorse or promote products derived from this software without
 *    prior written permission. For written permission, please contact
 *    openssl-core@openssl.org.
 *
 * 5. Products derived from this software may not be called "OpenSSL"
 *    nor may "OpenSSL" appear in their names without prior written
 *    permission of the OpenSSL Project.
 *
 * 6. Redistributions of any form whatsoever must retain the following
 *    acknowledgment:
 *    "This product includes software developed by the OpenSSL Project
 *    for use in the OpenSSL Toolkit (http://www.openssl.org/)"
 *
 * THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
 * EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
 * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE OpenSSL PROJECT OR
 * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
 * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
 * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
 * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED
 * OF THE POSSIBILITY OF SUCH DAMAGE.
 * ====================================================================
 */

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#define OPENSSL_FIPSAPI

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#include <openssl/crypto.h>
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#include "modes_lcl.h"
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#include <string.h>

#ifndef MODES_DEBUG
# ifndef NDEBUG
#  define NDEBUG
# endif
#endif
#include <assert.h>

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#if defined(BSWAP4) && defined(STRICT_ALIGNMENT)
/* redefine, because alignment is ensured */
#undef	GETU32
#define	GETU32(p)	BSWAP4(*(const u32 *)(p))
#undef	PUTU32
#define	PUTU32(p,v)	*(u32 *)(p) = BSWAP4(v)
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#endif

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#define	PACK(s)		((size_t)(s)<<(sizeof(size_t)*8-16))
#define REDUCE1BIT(V)	do { \
	if (sizeof(size_t)==8) { \
		u64 T = U64(0xe100000000000000) & (0-(V.lo&1)); \
		V.lo  = (V.hi<<63)|(V.lo>>1); \
		V.hi  = (V.hi>>1 )^T; \
	} \
	else { \
		u32 T = 0xe1000000U & (0-(u32)(V.lo&1)); \
		V.lo  = (V.hi<<63)|(V.lo>>1); \
		V.hi  = (V.hi>>1 )^((u64)T<<32); \
	} \
} while(0)

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#if	TABLE_BITS==8

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static void gcm_init_8bit(u128 Htable[256], u64 H[2])
{
	int  i, j;
	u128 V;

	Htable[0].hi = 0;
	Htable[0].lo = 0;
	V.hi = H[0];
	V.lo = H[1];

	for (Htable[128]=V, i=64; i>0; i>>=1) {
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		REDUCE1BIT(V);
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		Htable[i] = V;
	}

	for (i=2; i<256; i<<=1) {
		u128 *Hi = Htable+i, H0 = *Hi;
		for (j=1; j<i; ++j) {
			Hi[j].hi = H0.hi^Htable[j].hi;
			Hi[j].lo = H0.lo^Htable[j].lo;
		}
	}
}

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static void gcm_gmult_8bit(u64 Xi[2], u128 Htable[256])
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{
	u128 Z = { 0, 0};
	const u8 *xi = (const u8 *)Xi+15;
	size_t rem, n = *xi;
	const union { long one; char little; } is_endian = {1};
	static const size_t rem_8bit[256] = {
		PACK(0x0000), PACK(0x01C2), PACK(0x0384), PACK(0x0246),
		PACK(0x0708), PACK(0x06CA), PACK(0x048C), PACK(0x054E),
		PACK(0x0E10), PACK(0x0FD2), PACK(0x0D94), PACK(0x0C56),
		PACK(0x0918), PACK(0x08DA), PACK(0x0A9C), PACK(0x0B5E),
		PACK(0x1C20), PACK(0x1DE2), PACK(0x1FA4), PACK(0x1E66),
		PACK(0x1B28), PACK(0x1AEA), PACK(0x18AC), PACK(0x196E),
		PACK(0x1230), PACK(0x13F2), PACK(0x11B4), PACK(0x1076),
		PACK(0x1538), PACK(0x14FA), PACK(0x16BC), PACK(0x177E),
		PACK(0x3840), PACK(0x3982), PACK(0x3BC4), PACK(0x3A06),
		PACK(0x3F48), PACK(0x3E8A), PACK(0x3CCC), PACK(0x3D0E),
		PACK(0x3650), PACK(0x3792), PACK(0x35D4), PACK(0x3416),
		PACK(0x3158), PACK(0x309A), PACK(0x32DC), PACK(0x331E),
		PACK(0x2460), PACK(0x25A2), PACK(0x27E4), PACK(0x2626),
		PACK(0x2368), PACK(0x22AA), PACK(0x20EC), PACK(0x212E),
		PACK(0x2A70), PACK(0x2BB2), PACK(0x29F4), PACK(0x2836),
		PACK(0x2D78), PACK(0x2CBA), PACK(0x2EFC), PACK(0x2F3E),
		PACK(0x7080), PACK(0x7142), PACK(0x7304), PACK(0x72C6),
		PACK(0x7788), PACK(0x764A), PACK(0x740C), PACK(0x75CE),
		PACK(0x7E90), PACK(0x7F52), PACK(0x7D14), PACK(0x7CD6),
		PACK(0x7998), PACK(0x785A), PACK(0x7A1C), PACK(0x7BDE),
		PACK(0x6CA0), PACK(0x6D62), PACK(0x6F24), PACK(0x6EE6),
		PACK(0x6BA8), PACK(0x6A6A), PACK(0x682C), PACK(0x69EE),
		PACK(0x62B0), PACK(0x6372), PACK(0x6134), PACK(0x60F6),
		PACK(0x65B8), PACK(0x647A), PACK(0x663C), PACK(0x67FE),
		PACK(0x48C0), PACK(0x4902), PACK(0x4B44), PACK(0x4A86),
		PACK(0x4FC8), PACK(0x4E0A), PACK(0x4C4C), PACK(0x4D8E),
		PACK(0x46D0), PACK(0x4712), PACK(0x4554), PACK(0x4496),
		PACK(0x41D8), PACK(0x401A), PACK(0x425C), PACK(0x439E),
		PACK(0x54E0), PACK(0x5522), PACK(0x5764), PACK(0x56A6),
		PACK(0x53E8), PACK(0x522A), PACK(0x506C), PACK(0x51AE),
		PACK(0x5AF0), PACK(0x5B32), PACK(0x5974), PACK(0x58B6),
		PACK(0x5DF8), PACK(0x5C3A), PACK(0x5E7C), PACK(0x5FBE),
		PACK(0xE100), PACK(0xE0C2), PACK(0xE284), PACK(0xE346),
		PACK(0xE608), PACK(0xE7CA), PACK(0xE58C), PACK(0xE44E),
		PACK(0xEF10), PACK(0xEED2), PACK(0xEC94), PACK(0xED56),
		PACK(0xE818), PACK(0xE9DA), PACK(0xEB9C), PACK(0xEA5E),
		PACK(0xFD20), PACK(0xFCE2), PACK(0xFEA4), PACK(0xFF66),
		PACK(0xFA28), PACK(0xFBEA), PACK(0xF9AC), PACK(0xF86E),
		PACK(0xF330), PACK(0xF2F2), PACK(0xF0B4), PACK(0xF176),
		PACK(0xF438), PACK(0xF5FA), PACK(0xF7BC), PACK(0xF67E),
		PACK(0xD940), PACK(0xD882), PACK(0xDAC4), PACK(0xDB06),
		PACK(0xDE48), PACK(0xDF8A), PACK(0xDDCC), PACK(0xDC0E),
		PACK(0xD750), PACK(0xD692), PACK(0xD4D4), PACK(0xD516),
		PACK(0xD058), PACK(0xD19A), PACK(0xD3DC), PACK(0xD21E),
		PACK(0xC560), PACK(0xC4A2), PACK(0xC6E4), PACK(0xC726),
		PACK(0xC268), PACK(0xC3AA), PACK(0xC1EC), PACK(0xC02E),
		PACK(0xCB70), PACK(0xCAB2), PACK(0xC8F4), PACK(0xC936),
		PACK(0xCC78), PACK(0xCDBA), PACK(0xCFFC), PACK(0xCE3E),
		PACK(0x9180), PACK(0x9042), PACK(0x9204), PACK(0x93C6),
		PACK(0x9688), PACK(0x974A), PACK(0x950C), PACK(0x94CE),
		PACK(0x9F90), PACK(0x9E52), PACK(0x9C14), PACK(0x9DD6),
		PACK(0x9898), PACK(0x995A), PACK(0x9B1C), PACK(0x9ADE),
		PACK(0x8DA0), PACK(0x8C62), PACK(0x8E24), PACK(0x8FE6),
		PACK(0x8AA8), PACK(0x8B6A), PACK(0x892C), PACK(0x88EE),
		PACK(0x83B0), PACK(0x8272), PACK(0x8034), PACK(0x81F6),
		PACK(0x84B8), PACK(0x857A), PACK(0x873C), PACK(0x86FE),
		PACK(0xA9C0), PACK(0xA802), PACK(0xAA44), PACK(0xAB86),
		PACK(0xAEC8), PACK(0xAF0A), PACK(0xAD4C), PACK(0xAC8E),
		PACK(0xA7D0), PACK(0xA612), PACK(0xA454), PACK(0xA596),
		PACK(0xA0D8), PACK(0xA11A), PACK(0xA35C), PACK(0xA29E),
		PACK(0xB5E0), PACK(0xB422), PACK(0xB664), PACK(0xB7A6),
		PACK(0xB2E8), PACK(0xB32A), PACK(0xB16C), PACK(0xB0AE),
		PACK(0xBBF0), PACK(0xBA32), PACK(0xB874), PACK(0xB9B6),
		PACK(0xBCF8), PACK(0xBD3A), PACK(0xBF7C), PACK(0xBEBE) };

	while (1) {
		Z.hi ^= Htable[n].hi;
		Z.lo ^= Htable[n].lo;

		if ((u8 *)Xi==xi)	break;

		n = *(--xi);

		rem  = (size_t)Z.lo&0xff;
		Z.lo = (Z.hi<<56)|(Z.lo>>8);
		Z.hi = (Z.hi>>8);
		if (sizeof(size_t)==8)
			Z.hi ^= rem_8bit[rem];
		else
			Z.hi ^= (u64)rem_8bit[rem]<<32;
	}

	if (is_endian.little) {
#ifdef BSWAP8
		Xi[0] = BSWAP8(Z.hi);
		Xi[1] = BSWAP8(Z.lo);
#else
		u8 *p = (u8 *)Xi;
		u32 v;
		v = (u32)(Z.hi>>32);	PUTU32(p,v);
		v = (u32)(Z.hi);	PUTU32(p+4,v);
		v = (u32)(Z.lo>>32);	PUTU32(p+8,v);
		v = (u32)(Z.lo);	PUTU32(p+12,v);
#endif
	}
	else {
		Xi[0] = Z.hi;
		Xi[1] = Z.lo;
	}
}
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#define GCM_MUL(ctx,Xi)   gcm_gmult_8bit(ctx->Xi.u,ctx->Htable)
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#elif	TABLE_BITS==4
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static void gcm_init_4bit(u128 Htable[16], u64 H[2])
{
	u128 V;
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#if defined(OPENSSL_SMALL_FOOTPRINT)
	int  i;
#endif
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	Htable[0].hi = 0;
	Htable[0].lo = 0;
	V.hi = H[0];
	V.lo = H[1];

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#if defined(OPENSSL_SMALL_FOOTPRINT)
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	for (Htable[8]=V, i=4; i>0; i>>=1) {
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		REDUCE1BIT(V);
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		Htable[i] = V;
	}

	for (i=2; i<16; i<<=1) {
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		u128 *Hi = Htable+i;
		int   j;
		for (V=*Hi, j=1; j<i; ++j) {
			Hi[j].hi = V.hi^Htable[j].hi;
			Hi[j].lo = V.lo^Htable[j].lo;
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		}
	}
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#else
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	Htable[8] = V;
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	REDUCE1BIT(V);
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	Htable[4] = V;
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	REDUCE1BIT(V);
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	Htable[2] = V;
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	REDUCE1BIT(V);
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	Htable[1] = V;
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	Htable[3].hi  = V.hi^Htable[2].hi, Htable[3].lo  = V.lo^Htable[2].lo;
	V=Htable[4];
	Htable[5].hi  = V.hi^Htable[1].hi, Htable[5].lo  = V.lo^Htable[1].lo;
	Htable[6].hi  = V.hi^Htable[2].hi, Htable[6].lo  = V.lo^Htable[2].lo;
	Htable[7].hi  = V.hi^Htable[3].hi, Htable[7].lo  = V.lo^Htable[3].lo;
	V=Htable[8];
	Htable[9].hi  = V.hi^Htable[1].hi, Htable[9].lo  = V.lo^Htable[1].lo;
	Htable[10].hi = V.hi^Htable[2].hi, Htable[10].lo = V.lo^Htable[2].lo;
	Htable[11].hi = V.hi^Htable[3].hi, Htable[11].lo = V.lo^Htable[3].lo;
	Htable[12].hi = V.hi^Htable[4].hi, Htable[12].lo = V.lo^Htable[4].lo;
	Htable[13].hi = V.hi^Htable[5].hi, Htable[13].lo = V.lo^Htable[5].lo;
	Htable[14].hi = V.hi^Htable[6].hi, Htable[14].lo = V.lo^Htable[6].lo;
	Htable[15].hi = V.hi^Htable[7].hi, Htable[15].lo = V.lo^Htable[7].lo;
#endif
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#if defined(GHASH_ASM) && (defined(__arm__) || defined(__arm))
	/*
	 * ARM assembler expects specific dword order in Htable.
	 */
	{
	int j;
	const union { long one; char little; } is_endian = {1};

	if (is_endian.little)
		for (j=0;j<16;++j) {
			V = Htable[j];
			Htable[j].hi = V.lo;
			Htable[j].lo = V.hi;
		}
	else
		for (j=0;j<16;++j) {
			V = Htable[j];
			Htable[j].hi = V.lo<<32|V.lo>>32;
			Htable[j].lo = V.hi<<32|V.hi>>32;
		}
	}
#endif
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}

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#ifndef GHASH_ASM
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static const size_t rem_4bit[16] = {
	PACK(0x0000), PACK(0x1C20), PACK(0x3840), PACK(0x2460),
	PACK(0x7080), PACK(0x6CA0), PACK(0x48C0), PACK(0x54E0),
	PACK(0xE100), PACK(0xFD20), PACK(0xD940), PACK(0xC560),
	PACK(0x9180), PACK(0x8DA0), PACK(0xA9C0), PACK(0xB5E0) };

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static void gcm_gmult_4bit(u64 Xi[2], const u128 Htable[16])
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{
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	u128 Z;
	int cnt = 15;
	size_t rem, nlo, nhi;
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	const union { long one; char little; } is_endian = {1};
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	nlo  = ((const u8 *)Xi)[15];
	nhi  = nlo>>4;
	nlo &= 0xf;

	Z.hi = Htable[nlo].hi;
	Z.lo = Htable[nlo].lo;
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	while (1) {
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		rem  = (size_t)Z.lo&0xf;
		Z.lo = (Z.hi<<60)|(Z.lo>>4);
		Z.hi = (Z.hi>>4);
		if (sizeof(size_t)==8)
			Z.hi ^= rem_4bit[rem];
		else
			Z.hi ^= (u64)rem_4bit[rem]<<32;

		Z.hi ^= Htable[nhi].hi;
		Z.lo ^= Htable[nhi].lo;

		if (--cnt<0)		break;

		nlo  = ((const u8 *)Xi)[cnt];
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		nhi  = nlo>>4;
		nlo &= 0xf;

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		rem  = (size_t)Z.lo&0xf;
		Z.lo = (Z.hi<<60)|(Z.lo>>4);
		Z.hi = (Z.hi>>4);
		if (sizeof(size_t)==8)
			Z.hi ^= rem_4bit[rem];
		else
			Z.hi ^= (u64)rem_4bit[rem]<<32;

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		Z.hi ^= Htable[nlo].hi;
		Z.lo ^= Htable[nlo].lo;
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	}
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	if (is_endian.little) {
#ifdef BSWAP8
		Xi[0] = BSWAP8(Z.hi);
		Xi[1] = BSWAP8(Z.lo);
#else
		u8 *p = (u8 *)Xi;
		u32 v;
		v = (u32)(Z.hi>>32);	PUTU32(p,v);
		v = (u32)(Z.hi);	PUTU32(p+4,v);
		v = (u32)(Z.lo>>32);	PUTU32(p+8,v);
		v = (u32)(Z.lo);	PUTU32(p+12,v);
#endif
	}
	else {
		Xi[0] = Z.hi;
		Xi[1] = Z.lo;
	}
}

#if !defined(OPENSSL_SMALL_FOOTPRINT)
/*
 * Streamed gcm_mult_4bit, see CRYPTO_gcm128_[en|de]crypt for
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 * details... Compiler-generated code doesn't seem to give any
 * performance improvement, at least not on x86[_64]. It's here
 * mostly as reference and a placeholder for possible future
 * non-trivial optimization[s]...
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 */
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static void gcm_ghash_4bit(u64 Xi[2],const u128 Htable[16],
				const u8 *inp,size_t len)
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{
    u128 Z;
    int cnt;
    size_t rem, nlo, nhi;
    const union { long one; char little; } is_endian = {1};

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#if 1
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    do {
	cnt  = 15;
	nlo  = ((const u8 *)Xi)[15];
	nlo ^= inp[15];
	nhi  = nlo>>4;
	nlo &= 0xf;

	Z.hi = Htable[nlo].hi;
	Z.lo = Htable[nlo].lo;

	while (1) {
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		rem  = (size_t)Z.lo&0xf;
		Z.lo = (Z.hi<<60)|(Z.lo>>4);
		Z.hi = (Z.hi>>4);
		if (sizeof(size_t)==8)
			Z.hi ^= rem_4bit[rem];
		else
			Z.hi ^= (u64)rem_4bit[rem]<<32;

		Z.hi ^= Htable[nhi].hi;
		Z.lo ^= Htable[nhi].lo;

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		if (--cnt<0)		break;
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		nlo  = ((const u8 *)Xi)[cnt];
		nlo ^= inp[cnt];
		nhi  = nlo>>4;
		nlo &= 0xf;
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		rem  = (size_t)Z.lo&0xf;
		Z.lo = (Z.hi<<60)|(Z.lo>>4);
		Z.hi = (Z.hi>>4);
		if (sizeof(size_t)==8)
			Z.hi ^= rem_4bit[rem];
		else
			Z.hi ^= (u64)rem_4bit[rem]<<32;
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		Z.hi ^= Htable[nlo].hi;
		Z.lo ^= Htable[nlo].lo;
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	}
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#else
    /*
     * Extra 256+16 bytes per-key plus 512 bytes shared tables
     * [should] give ~50% improvement... One could have PACK()-ed
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     * the rem_8bit even here, but the priority is to minimize
     * cache footprint...
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     */ 
    u128 Hshr4[16];	/* Htable shifted right by 4 bits */
    u8   Hshl4[16];	/* Htable shifted left  by 4 bits */
    static const unsigned short rem_8bit[256] = {
	0x0000, 0x01C2, 0x0384, 0x0246, 0x0708, 0x06CA, 0x048C, 0x054E,
	0x0E10, 0x0FD2, 0x0D94, 0x0C56, 0x0918, 0x08DA, 0x0A9C, 0x0B5E,
	0x1C20, 0x1DE2, 0x1FA4, 0x1E66, 0x1B28, 0x1AEA, 0x18AC, 0x196E,
	0x1230, 0x13F2, 0x11B4, 0x1076, 0x1538, 0x14FA, 0x16BC, 0x177E,
	0x3840, 0x3982, 0x3BC4, 0x3A06, 0x3F48, 0x3E8A, 0x3CCC, 0x3D0E,
	0x3650, 0x3792, 0x35D4, 0x3416, 0x3158, 0x309A, 0x32DC, 0x331E,
	0x2460, 0x25A2, 0x27E4, 0x2626, 0x2368, 0x22AA, 0x20EC, 0x212E,
	0x2A70, 0x2BB2, 0x29F4, 0x2836, 0x2D78, 0x2CBA, 0x2EFC, 0x2F3E,
	0x7080, 0x7142, 0x7304, 0x72C6, 0x7788, 0x764A, 0x740C, 0x75CE,
	0x7E90, 0x7F52, 0x7D14, 0x7CD6, 0x7998, 0x785A, 0x7A1C, 0x7BDE,
	0x6CA0, 0x6D62, 0x6F24, 0x6EE6, 0x6BA8, 0x6A6A, 0x682C, 0x69EE,
	0x62B0, 0x6372, 0x6134, 0x60F6, 0x65B8, 0x647A, 0x663C, 0x67FE,
	0x48C0, 0x4902, 0x4B44, 0x4A86, 0x4FC8, 0x4E0A, 0x4C4C, 0x4D8E,
	0x46D0, 0x4712, 0x4554, 0x4496, 0x41D8, 0x401A, 0x425C, 0x439E,
	0x54E0, 0x5522, 0x5764, 0x56A6, 0x53E8, 0x522A, 0x506C, 0x51AE,
	0x5AF0, 0x5B32, 0x5974, 0x58B6, 0x5DF8, 0x5C3A, 0x5E7C, 0x5FBE,
	0xE100, 0xE0C2, 0xE284, 0xE346, 0xE608, 0xE7CA, 0xE58C, 0xE44E,
	0xEF10, 0xEED2, 0xEC94, 0xED56, 0xE818, 0xE9DA, 0xEB9C, 0xEA5E,
	0xFD20, 0xFCE2, 0xFEA4, 0xFF66, 0xFA28, 0xFBEA, 0xF9AC, 0xF86E,
	0xF330, 0xF2F2, 0xF0B4, 0xF176, 0xF438, 0xF5FA, 0xF7BC, 0xF67E,
	0xD940, 0xD882, 0xDAC4, 0xDB06, 0xDE48, 0xDF8A, 0xDDCC, 0xDC0E,
	0xD750, 0xD692, 0xD4D4, 0xD516, 0xD058, 0xD19A, 0xD3DC, 0xD21E,
	0xC560, 0xC4A2, 0xC6E4, 0xC726, 0xC268, 0xC3AA, 0xC1EC, 0xC02E,
	0xCB70, 0xCAB2, 0xC8F4, 0xC936, 0xCC78, 0xCDBA, 0xCFFC, 0xCE3E,
	0x9180, 0x9042, 0x9204, 0x93C6, 0x9688, 0x974A, 0x950C, 0x94CE,
	0x9F90, 0x9E52, 0x9C14, 0x9DD6, 0x9898, 0x995A, 0x9B1C, 0x9ADE,
	0x8DA0, 0x8C62, 0x8E24, 0x8FE6, 0x8AA8, 0x8B6A, 0x892C, 0x88EE,
	0x83B0, 0x8272, 0x8034, 0x81F6, 0x84B8, 0x857A, 0x873C, 0x86FE,
	0xA9C0, 0xA802, 0xAA44, 0xAB86, 0xAEC8, 0xAF0A, 0xAD4C, 0xAC8E,
	0xA7D0, 0xA612, 0xA454, 0xA596, 0xA0D8, 0xA11A, 0xA35C, 0xA29E,
	0xB5E0, 0xB422, 0xB664, 0xB7A6, 0xB2E8, 0xB32A, 0xB16C, 0xB0AE,
	0xBBF0, 0xBA32, 0xB874, 0xB9B6, 0xBCF8, 0xBD3A, 0xBF7C, 0xBEBE };
    /*
     * This pre-processing phase slows down procedure by approximately
     * same time as it makes each loop spin faster. In other words
     * single block performance is approximately same as straightforward
     * "4-bit" implementation, and then it goes only faster...
     */
    for (cnt=0; cnt<16; ++cnt) {
	Z.hi = Htable[cnt].hi;
	Z.lo = Htable[cnt].lo;
	Hshr4[cnt].lo = (Z.hi<<60)|(Z.lo>>4);
	Hshr4[cnt].hi = (Z.hi>>4);
	Hshl4[cnt]    = (u8)(Z.lo<<4);
    }

    do {
478
	for (Z.lo=0, Z.hi=0, cnt=15; cnt; --cnt) {
479 480 481 482 483 484 485 486 487 488 489 490 491 492 493 494 495 496 497 498 499 500 501 502 503 504 505 506 507 508 509 510 511 512 513
		nlo  = ((const u8 *)Xi)[cnt];
		nlo ^= inp[cnt];
		nhi  = nlo>>4;
		nlo &= 0xf;

		Z.hi ^= Htable[nlo].hi;
		Z.lo ^= Htable[nlo].lo;

		rem = (size_t)Z.lo&0xff;

		Z.lo = (Z.hi<<56)|(Z.lo>>8);
		Z.hi = (Z.hi>>8);

		Z.hi ^= Hshr4[nhi].hi;
		Z.lo ^= Hshr4[nhi].lo;
		Z.hi ^= (u64)rem_8bit[rem^Hshl4[nhi]]<<48;
	}

	nlo  = ((const u8 *)Xi)[0];
	nlo ^= inp[0];
	nhi  = nlo>>4;
	nlo &= 0xf;

	Z.hi ^= Htable[nlo].hi;
	Z.lo ^= Htable[nlo].lo;

	rem = (size_t)Z.lo&0xf;

	Z.lo = (Z.hi<<60)|(Z.lo>>4);
	Z.hi = (Z.hi>>4);

	Z.hi ^= Htable[nhi].hi;
	Z.lo ^= Htable[nhi].lo;
	Z.hi ^= ((u64)rem_8bit[rem<<4])<<48;
#endif
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	if (is_endian.little) {
#ifdef BSWAP8
		Xi[0] = BSWAP8(Z.hi);
		Xi[1] = BSWAP8(Z.lo);
#else
		u8 *p = (u8 *)Xi;
		u32 v;
		v = (u32)(Z.hi>>32);	PUTU32(p,v);
		v = (u32)(Z.hi);	PUTU32(p+4,v);
		v = (u32)(Z.lo>>32);	PUTU32(p+8,v);
		v = (u32)(Z.lo);	PUTU32(p+12,v);
#endif
	}
	else {
		Xi[0] = Z.hi;
		Xi[1] = Z.lo;
	}
532
    } while (inp+=16, len-=16);
533
}
534 535
#endif
#else
536 537
void gcm_gmult_4bit(u64 Xi[2],const u128 Htable[16]);
void gcm_ghash_4bit(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
538 539 540
#endif

#define GCM_MUL(ctx,Xi)   gcm_gmult_4bit(ctx->Xi.u,ctx->Htable)
541
#if defined(GHASH_ASM) || !defined(OPENSSL_SMALL_FOOTPRINT)
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#define GHASH(ctx,in,len) gcm_ghash_4bit((ctx)->Xi.u,(ctx)->Htable,in,len)
543 544 545
/* GHASH_CHUNK is "stride parameter" missioned to mitigate cache
 * trashing effect. In other words idea is to hash data while it's
 * still in L1 cache after encryption pass... */
546
#define GHASH_CHUNK       (3*1024)
547
#endif
548

549
#else	/* TABLE_BITS */
550

551
static void gcm_gmult_1bit(u64 Xi[2],const u64 H[2])
552 553 554 555 556 557 558
{
	u128 V,Z = { 0,0 };
	long X;
	int  i,j;
	const long *xi = (const long *)Xi;
	const union { long one; char little; } is_endian = {1};

559
	V.hi = H[0];	/* H is in host byte order, no byte swapping */
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	V.lo = H[1];

	for (j=0; j<16/sizeof(long); ++j) {
		if (is_endian.little) {
			if (sizeof(long)==8) {
#ifdef BSWAP8
				X = (long)(BSWAP8(xi[j]));
#else
				const u8 *p = (const u8 *)(xi+j);
				X = (long)((u64)GETU32(p)<<32|GETU32(p+4));
#endif
			}
			else {
				const u8 *p = (const u8 *)(xi+j);
				X = (long)GETU32(p);
			}
		}
		else
			X = xi[j];

		for (i=0; i<8*sizeof(long); ++i, X<<=1) {
			u64 M = (u64)(X>>(8*sizeof(long)-1));
			Z.hi ^= V.hi&M;
			Z.lo ^= V.lo&M;

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			REDUCE1BIT(V);
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		}
	}

	if (is_endian.little) {
#ifdef BSWAP8
		Xi[0] = BSWAP8(Z.hi);
		Xi[1] = BSWAP8(Z.lo);
#else
		u8 *p = (u8 *)Xi;
		u32 v;
		v = (u32)(Z.hi>>32);	PUTU32(p,v);
		v = (u32)(Z.hi);	PUTU32(p+4,v);
		v = (u32)(Z.lo>>32);	PUTU32(p+8,v);
		v = (u32)(Z.lo);	PUTU32(p+12,v);
#endif
	}
	else {
		Xi[0] = Z.hi;
		Xi[1] = Z.lo;
	}
}
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#define GCM_MUL(ctx,Xi)	  gcm_gmult_1bit(ctx->Xi.u,ctx->H.u)
608

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#endif

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#if	TABLE_BITS==4 && defined(GHASH_ASM) && !defined(I386_ONLY) && \
	(defined(__i386)	|| defined(__i386__)	|| \
	 defined(__x86_64)	|| defined(__x86_64__)	|| \
	 defined(_M_IX86)	|| defined(_M_AMD64)	|| defined(_M_X64))
# define GHASH_ASM_IAX
extern unsigned int OPENSSL_ia32cap_P[2];

void gcm_init_clmul(u128 Htable[16],const u64 Xi[2]);
void gcm_gmult_clmul(u64 Xi[2],const u128 Htable[16]);
void gcm_ghash_clmul(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);

# if	defined(__i386) || defined(__i386__) || defined(_M_IX86)
#  define GHASH_ASM_X86
void gcm_gmult_4bit_mmx(u64 Xi[2],const u128 Htable[16]);
void gcm_ghash_4bit_mmx(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);

void gcm_gmult_4bit_x86(u64 Xi[2],const u128 Htable[16]);
void gcm_ghash_4bit_x86(u64 Xi[2],const u128 Htable[16],const u8 *inp,size_t len);
# endif

# undef  GCM_MUL
# define GCM_MUL(ctx,Xi)   (*((ctx)->gmult))(ctx->Xi.u,ctx->Htable)
# undef  GHASH
# define GHASH(ctx,in,len) (*((ctx)->ghash))((ctx)->Xi.u,(ctx)->Htable,in,len)
#endif

637 638 639 640 641 642 643 644 645 646 647 648 649 650 651 652 653 654 655 656 657 658 659 660 661
void CRYPTO_gcm128_init(GCM128_CONTEXT *ctx,void *key,block128_f block)
{
	const union { long one; char little; } is_endian = {1};

	memset(ctx,0,sizeof(*ctx));
	ctx->block = block;
	ctx->key   = key;

	(*block)(ctx->H.c,ctx->H.c,key);

	if (is_endian.little) {
		/* H is stored in host byte order */
#ifdef BSWAP8
		ctx->H.u[0] = BSWAP8(ctx->H.u[0]);
		ctx->H.u[1] = BSWAP8(ctx->H.u[1]);
#else
		u8 *p = ctx->H.c;
		u64 hi,lo;
		hi = (u64)GETU32(p)  <<32|GETU32(p+4);
		lo = (u64)GETU32(p+8)<<32|GETU32(p+12);
		ctx->H.u[0] = hi;
		ctx->H.u[1] = lo;
#endif
	}

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#if	TABLE_BITS==8
	gcm_init_8bit(ctx->Htable,ctx->H.u);
#elif	TABLE_BITS==4
665
# if	defined(GHASH_ASM_IAX)			/* both x86 and x86_64 */
666
#  if	!defined(GHASH_ASM_X86) || defined(OPENSSL_IA32_SSE2)
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	if (OPENSSL_ia32cap_P[1]&(1<<1)) {
		gcm_init_clmul(ctx->Htable,ctx->H.u);
		ctx->gmult = gcm_gmult_clmul;
		ctx->ghash = gcm_ghash_clmul;
		return;
	}
673
#  endif
674
	gcm_init_4bit(ctx->Htable,ctx->H.u);
675
#  if	defined(GHASH_ASM_X86)			/* x86 only */
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	if (OPENSSL_ia32cap_P[0]&(1<<23)) {
		ctx->gmult = gcm_gmult_4bit_mmx;
		ctx->ghash = gcm_ghash_4bit_mmx;
	} else {
		ctx->gmult = gcm_gmult_4bit_x86;
		ctx->ghash = gcm_ghash_4bit_x86;
	}
#  else
	ctx->gmult = gcm_gmult_4bit;
	ctx->ghash = gcm_ghash_4bit;
#  endif
# else
	gcm_init_4bit(ctx->Htable,ctx->H.u);
# endif
690
#endif
691 692 693 694 695
}

void CRYPTO_gcm128_setiv(GCM128_CONTEXT *ctx,const unsigned char *iv,size_t len)
{
	const union { long one; char little; } is_endian = {1};
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	unsigned int ctr;
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	ctx->Yi.u[0]  = 0;
	ctx->Yi.u[1]  = 0;
	ctx->Xi.u[0]  = 0;
	ctx->Xi.u[1]  = 0;
702 703 704 705
	ctx->len.u[0] = 0;	/* AAD length */
	ctx->len.u[1] = 0;	/* message length */
	ctx->ares = 0;
	ctx->mres = 0;
706 707 708 709

	if (len==12) {
		memcpy(ctx->Yi.c,iv,12);
		ctx->Yi.c[15]=1;
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		ctr=1;
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	}
	else {
		size_t i;
		u64 len0 = len;

		while (len>=16) {
			for (i=0; i<16; ++i) ctx->Yi.c[i] ^= iv[i];
			GCM_MUL(ctx,Yi);
			iv += 16;
			len -= 16;
		}
		if (len) {
			for (i=0; i<len; ++i) ctx->Yi.c[i] ^= iv[i];
			GCM_MUL(ctx,Yi);
		}
		len0 <<= 3;
		if (is_endian.little) {
#ifdef BSWAP8
			ctx->Yi.u[1]  ^= BSWAP8(len0);
#else
			ctx->Yi.c[8]  ^= (u8)(len0>>56);
			ctx->Yi.c[9]  ^= (u8)(len0>>48);
			ctx->Yi.c[10] ^= (u8)(len0>>40);
			ctx->Yi.c[11] ^= (u8)(len0>>32);
			ctx->Yi.c[12] ^= (u8)(len0>>24);
			ctx->Yi.c[13] ^= (u8)(len0>>16);
			ctx->Yi.c[14] ^= (u8)(len0>>8);
			ctx->Yi.c[15] ^= (u8)(len0);
#endif
		}
		else
			ctx->Yi.u[1]  ^= len0;

		GCM_MUL(ctx,Yi);

		if (is_endian.little)
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			ctr = GETU32(ctx->Yi.c+12);
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		else
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			ctr = ctx->Yi.d[3];
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	}

	(*ctx->block)(ctx->Yi.c,ctx->EK0.c,ctx->key);
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	++ctr;
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	if (is_endian.little)
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		PUTU32(ctx->Yi.c+12,ctr);
756
	else
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		ctx->Yi.d[3] = ctr;
758 759
}

760
int CRYPTO_gcm128_aad(GCM128_CONTEXT *ctx,const unsigned char *aad,size_t len)
761 762
{
	size_t i;
763 764
	unsigned int n;
	u64 alen = ctx->len.u[0];
765

766 767 768 769 770 771
	if (ctx->len.u[1]) return -2;

	alen += len;
	if (alen>(U64(1)<<61) || (sizeof(len)==8 && alen<len))
		return -1;
	ctx->len.u[0] = alen;
772

773
	n = ctx->ares;
774 775 776 777 778 779 780 781 782
	if (n) {
		while (n && len) {
			ctx->Xi.c[n] ^= *(aad++);
			--len;
			n = (n+1)%16;
		}
		if (n==0) GCM_MUL(ctx,Xi);
		else {
			ctx->ares = n;
783
			return 0;
784 785
		}
	}
786

787 788
#ifdef GHASH
	if ((i = (len&(size_t)-16))) {
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		GHASH(ctx,aad,i);
790 791 792 793
		aad += i;
		len -= i;
	}
#else
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	while (len>=16) {
		for (i=0; i<16; ++i) ctx->Xi.c[i] ^= aad[i];
		GCM_MUL(ctx,Xi);
		aad += 16;
		len -= 16;
	}
800
#endif
801
	if (len) {
802
		n = (unsigned int)len;
803 804
		for (i=0; i<len; ++i) ctx->Xi.c[i] ^= aad[i];
	}
805 806

	ctx->ares = n;
807
	return 0;
808 809
}

810
int CRYPTO_gcm128_encrypt(GCM128_CONTEXT *ctx,
811 812 813 814 815 816
		const unsigned char *in, unsigned char *out,
		size_t len)
{
	const union { long one; char little; } is_endian = {1};
	unsigned int n, ctr;
	size_t i;
817 818 819 820 821 822 823 824 825
	u64 mlen = ctx->len.u[1];

#if 0
	n = (unsigned int)mlen%16; /* alternative to ctx->mres */
#endif
	mlen += len;
	if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
		return -1;
	ctx->len.u[1] = mlen;
826

827 828 829 830 831 832
	if (ctx->ares) {
		/* First call to encrypt finalizes GHASH(AAD) */
		GCM_MUL(ctx,Xi);
		ctx->ares = 0;
	}

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	if (is_endian.little)
		ctr = GETU32(ctx->Yi.c+12);
	else
		ctr = ctx->Yi.d[3];
837

838
	n = ctx->mres;
839 840 841 842 843 844 845 846 847 848
#if !defined(OPENSSL_SMALL_FOOTPRINT)
	if (16%sizeof(size_t) == 0) do {	/* always true actually */
		if (n) {
			while (n && len) {
				ctx->Xi.c[n] ^= *(out++) = *(in++)^ctx->EKi.c[n];
				--len;
				n = (n+1)%16;
			}
			if (n==0) GCM_MUL(ctx,Xi);
			else {
849
				ctx->mres = n;
850
				return 0;
851 852 853 854 855 856
			}
		}
#if defined(STRICT_ALIGNMENT)
		if (((size_t)in|(size_t)out)%sizeof(size_t) != 0)
			break;
#endif
857
#if defined(GHASH) && defined(GHASH_CHUNK)
858 859 860 861 862
		while (len>=GHASH_CHUNK) {
		    size_t j=GHASH_CHUNK;

		    while (j) {
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
863 864 865 866 867
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
868 869 870 871 872 873 874
			for (i=0; i<16; i+=sizeof(size_t))
				*(size_t *)(out+i) =
				*(size_t *)(in+i)^*(size_t *)(ctx->EKi.c+i);
			out += 16;
			in  += 16;
			j   -= 16;
		    }
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		    GHASH(ctx,out-GHASH_CHUNK,GHASH_CHUNK);
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		    len -= GHASH_CHUNK;
		}
		if ((i = (len&(size_t)-16))) {
		    size_t j=i;

		    while (len>=16) {
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
			for (i=0; i<16; i+=sizeof(size_t))
				*(size_t *)(out+i) =
				*(size_t *)(in+i)^*(size_t *)(ctx->EKi.c+i);
			out += 16;
			in  += 16;
			len -= 16;
		    }
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		    GHASH(ctx,out-j,j);
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		}
#else
		while (len>=16) {
899
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
900 901 902 903 904
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
905 906 907 908 909 910 911 912 913
			for (i=0; i<16; i+=sizeof(size_t))
				*(size_t *)(ctx->Xi.c+i) ^=
				*(size_t *)(out+i) =
				*(size_t *)(in+i)^*(size_t *)(ctx->EKi.c+i);
			GCM_MUL(ctx,Xi);
			out += 16;
			in  += 16;
			len -= 16;
		}
914
#endif
915
		if (len) {
916
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
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			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
			while (len--) {
				ctx->Xi.c[n] ^= out[n] = in[n]^ctx->EKi.c[n];
				++n;
			}
		}

928
		ctx->mres = n;
929
		return 0;
930 931 932 933
	} while(0);
#endif
	for (i=0;i<len;++i) {
		if (n==0) {
934
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
935 936 937 938 939 940 941 942 943 944 945 946
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
		}
		ctx->Xi.c[n] ^= out[i] = in[i]^ctx->EKi.c[n];
		n = (n+1)%16;
		if (n==0)
			GCM_MUL(ctx,Xi);
	}

947
	ctx->mres = n;
948
	return 0;
949 950
}

951
int CRYPTO_gcm128_decrypt(GCM128_CONTEXT *ctx,
952 953 954 955 956 957
		const unsigned char *in, unsigned char *out,
		size_t len)
{
	const union { long one; char little; } is_endian = {1};
	unsigned int n, ctr;
	size_t i;
958 959 960 961 962 963
	u64 mlen = ctx->len.u[1];

	mlen += len;
	if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
		return -1;
	ctx->len.u[1] = mlen;
964

965 966 967 968 969 970
	if (ctx->ares) {
		/* First call to decrypt finalizes GHASH(AAD) */
		GCM_MUL(ctx,Xi);
		ctx->ares = 0;
	}

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Andy Polyakov 已提交
971 972 973 974
	if (is_endian.little)
		ctr = GETU32(ctx->Yi.c+12);
	else
		ctr = ctx->Yi.d[3];
975

976
	n = ctx->mres;
977 978 979 980 981 982 983 984 985 986 987 988
#if !defined(OPENSSL_SMALL_FOOTPRINT)
	if (16%sizeof(size_t) == 0) do {	/* always true actually */
		if (n) {
			while (n && len) {
				u8 c = *(in++);
				*(out++) = c^ctx->EKi.c[n];
				ctx->Xi.c[n] ^= c;
				--len;
				n = (n+1)%16;
			}
			if (n==0) GCM_MUL (ctx,Xi);
			else {
989
				ctx->mres = n;
990
				return 0;
991 992 993 994 995 996
			}
		}
#if defined(STRICT_ALIGNMENT)
		if (((size_t)in|(size_t)out)%sizeof(size_t) != 0)
			break;
#endif
997
#if defined(GHASH) && defined(GHASH_CHUNK)
998 999 1000
		while (len>=GHASH_CHUNK) {
		    size_t j=GHASH_CHUNK;

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Andy Polyakov 已提交
1001
		    GHASH(ctx,in,GHASH_CHUNK);
1002 1003
		    while (j) {
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
1004 1005 1006 1007 1008
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
1009 1010 1011 1012 1013 1014 1015 1016 1017 1018
			for (i=0; i<16; i+=sizeof(size_t))
				*(size_t *)(out+i) =
				*(size_t *)(in+i)^*(size_t *)(ctx->EKi.c+i);
			out += 16;
			in  += 16;
			j   -= 16;
		    }
		    len -= GHASH_CHUNK;
		}
		if ((i = (len&(size_t)-16))) {
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Andy Polyakov 已提交
1019
		    GHASH(ctx,in,i);
1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036
		    while (len>=16) {
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
			for (i=0; i<16; i+=sizeof(size_t))
				*(size_t *)(out+i) =
				*(size_t *)(in+i)^*(size_t *)(ctx->EKi.c+i);
			out += 16;
			in  += 16;
			len -= 16;
		    }
		}
#else
		while (len>=16) {
1037
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
1038 1039 1040 1041 1042
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
1043 1044 1045 1046 1047
			for (i=0; i<16; i+=sizeof(size_t)) {
				size_t c = *(size_t *)(in+i);
				*(size_t *)(out+i) = c^*(size_t *)(ctx->EKi.c+i);
				*(size_t *)(ctx->Xi.c+i) ^= c;
			}
1048
			GCM_MUL(ctx,Xi);
1049 1050 1051 1052
			out += 16;
			in  += 16;
			len -= 16;
		}
1053
#endif
1054
		if (len) {
1055
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
			while (len--) {
				u8 c = in[n];
				ctx->Xi.c[n] ^= c;
				out[n] = c^ctx->EKi.c[n];
				++n;
			}
		}

1069
		ctx->mres = n;
1070
		return 0;
1071 1072 1073 1074 1075
	} while(0);
#endif
	for (i=0;i<len;++i) {
		u8 c;
		if (n==0) {
1076
			(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
1077 1078 1079 1080 1081 1082 1083
			++ctr;
			if (is_endian.little)
				PUTU32(ctx->Yi.c+12,ctr);
			else
				ctx->Yi.d[3] = ctr;
		}
		c = in[i];
1084
		out[i] = c^ctx->EKi.c[n];
1085 1086 1087 1088 1089 1090
		ctx->Xi.c[n] ^= c;
		n = (n+1)%16;
		if (n==0)
			GCM_MUL(ctx,Xi);
	}

1091
	ctx->mres = n;
1092
	return 0;
1093 1094
}

1095
int CRYPTO_gcm128_encrypt_ctr32(GCM128_CONTEXT *ctx,
1096 1097 1098 1099 1100 1101
		const unsigned char *in, unsigned char *out,
		size_t len, ctr128_f stream)
{
	const union { long one; char little; } is_endian = {1};
	unsigned int n, ctr;
	size_t i;
1102 1103 1104 1105 1106 1107
	u64 mlen = ctx->len.u[1];

	mlen += len;
	if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
		return -1;
	ctx->len.u[1] = mlen;
1108

1109 1110 1111 1112 1113 1114
	if (ctx->ares) {
		/* First call to encrypt finalizes GHASH(AAD) */
		GCM_MUL(ctx,Xi);
		ctx->ares = 0;
	}

1115 1116 1117 1118 1119
	if (is_endian.little)
		ctr = GETU32(ctx->Yi.c+12);
	else
		ctr = ctx->Yi.d[3];

1120
	n = ctx->mres;
1121 1122 1123 1124 1125 1126 1127 1128
	if (n) {
		while (n && len) {
			ctx->Xi.c[n] ^= *(out++) = *(in++)^ctx->EKi.c[n];
			--len;
			n = (n+1)%16;
		}
		if (n==0) GCM_MUL(ctx,Xi);
		else {
1129
			ctx->mres = n;
1130
			return 0;
1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150
		}
	}
#if defined(GHASH) && !defined(OPENSSL_SMALL_FOOTPRINT)
	while (len>=GHASH_CHUNK) {
		(*stream)(in,out,GHASH_CHUNK/16,ctx->key,ctx->Yi.c);
		ctr += GHASH_CHUNK/16;
		if (is_endian.little)
			PUTU32(ctx->Yi.c+12,ctr);
		else
			ctx->Yi.d[3] = ctr;
		GHASH(ctx,out,GHASH_CHUNK);
		out += GHASH_CHUNK;
		in  += GHASH_CHUNK;
		len -= GHASH_CHUNK;
	}
#endif
	if ((i = (len&(size_t)-16))) {
		size_t j=i/16;

		(*stream)(in,out,j,ctx->key,ctx->Yi.c);
1151
		ctr += (unsigned int)j;
1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181
		if (is_endian.little)
			PUTU32(ctx->Yi.c+12,ctr);
		else
			ctx->Yi.d[3] = ctr;
		in  += i;
		len -= i;
#if defined(GHASH)
		GHASH(ctx,out,i);
		out += i;
#else
		while (j--) {
			for (i=0;i<16;++i) ctx->Xi.c[i] ^= out[i];
			GCM_MUL(ctx,Xi);
			out += 16;
		}
#endif
	}
	if (len) {
		(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
		++ctr;
		if (is_endian.little)
			PUTU32(ctx->Yi.c+12,ctr);
		else
			ctx->Yi.d[3] = ctr;
		while (len--) {
			ctx->Xi.c[n] ^= out[n] = in[n]^ctx->EKi.c[n];
			++n;
		}
	}

1182
	ctx->mres = n;
1183
	return 0;
1184 1185
}

1186
int CRYPTO_gcm128_decrypt_ctr32(GCM128_CONTEXT *ctx,
1187 1188 1189 1190 1191 1192
		const unsigned char *in, unsigned char *out,
		size_t len,ctr128_f stream)
{
	const union { long one; char little; } is_endian = {1};
	unsigned int n, ctr;
	size_t i;
1193 1194 1195 1196 1197 1198
	u64 mlen = ctx->len.u[1];

	mlen += len;
	if (mlen>((U64(1)<<36)-32) || (sizeof(len)==8 && mlen<len))
		return -1;
	ctx->len.u[1] = mlen;
1199

1200 1201 1202 1203 1204 1205
	if (ctx->ares) {
		/* First call to decrypt finalizes GHASH(AAD) */
		GCM_MUL(ctx,Xi);
		ctx->ares = 0;
	}

1206 1207 1208 1209 1210
	if (is_endian.little)
		ctr = GETU32(ctx->Yi.c+12);
	else
		ctr = ctx->Yi.d[3];

1211
	n = ctx->mres;
1212 1213 1214 1215 1216 1217 1218 1219 1220 1221
	if (n) {
		while (n && len) {
			u8 c = *(in++);
			*(out++) = c^ctx->EKi.c[n];
			ctx->Xi.c[n] ^= c;
			--len;
			n = (n+1)%16;
		}
		if (n==0) GCM_MUL (ctx,Xi);
		else {
1222
			ctx->mres = n;
1223
			return 0;
1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255
		}
	}
#if defined(GHASH) && !defined(OPENSSL_SMALL_FOOTPRINT)
	while (len>=GHASH_CHUNK) {
		GHASH(ctx,in,GHASH_CHUNK);
		(*stream)(in,out,GHASH_CHUNK/16,ctx->key,ctx->Yi.c);
		ctr += GHASH_CHUNK/16;
		if (is_endian.little)
			PUTU32(ctx->Yi.c+12,ctr);
		else
			ctx->Yi.d[3] = ctr;
		out += GHASH_CHUNK;
		in  += GHASH_CHUNK;
		len -= GHASH_CHUNK;
	}
#endif
	if ((i = (len&(size_t)-16))) {
		size_t j=i/16;

#if defined(GHASH)
		GHASH(ctx,in,i);
#else
		while (j--) {
			size_t k;
			for (k=0;k<16;++k) ctx->Xi.c[k] ^= in[k];
			GCM_MUL(ctx,Xi);
			in += 16;
		}
		j   = i/16;
		in -= i;
#endif
		(*stream)(in,out,j,ctx->key,ctx->Yi.c);
1256
		ctr += (unsigned int)j;
1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279
		if (is_endian.little)
			PUTU32(ctx->Yi.c+12,ctr);
		else
			ctx->Yi.d[3] = ctr;
		out += i;
		in  += i;
		len -= i;
	}
	if (len) {
		(*ctx->block)(ctx->Yi.c,ctx->EKi.c,ctx->key);
		++ctr;
		if (is_endian.little)
			PUTU32(ctx->Yi.c+12,ctr);
		else
			ctx->Yi.d[3] = ctr;
		while (len--) {
			u8 c = in[n];
			ctx->Xi.c[n] ^= c;
			out[n] = c^ctx->EKi.c[n];
			++n;
		}
	}

1280
	ctx->mres = n;
1281
	return 0;
1282 1283
}

1284 1285
int CRYPTO_gcm128_finish(GCM128_CONTEXT *ctx,const unsigned char *tag,
			size_t len)
1286 1287 1288 1289 1290
{
	const union { long one; char little; } is_endian = {1};
	u64 alen = ctx->len.u[0]<<3;
	u64 clen = ctx->len.u[1]<<3;

1291
	if (ctx->mres)
1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314
		GCM_MUL(ctx,Xi);

	if (is_endian.little) {
#ifdef BSWAP8
		alen = BSWAP8(alen);
		clen = BSWAP8(clen);
#else
		u8 *p = ctx->len.c;

		ctx->len.u[0] = alen;
		ctx->len.u[1] = clen;

		alen = (u64)GETU32(p)  <<32|GETU32(p+4);
		clen = (u64)GETU32(p+8)<<32|GETU32(p+12);
#endif
	}

	ctx->Xi.u[0] ^= alen;
	ctx->Xi.u[1] ^= clen;
	GCM_MUL(ctx,Xi);

	ctx->Xi.u[0] ^= ctx->EK0.u[0];
	ctx->Xi.u[1] ^= ctx->EK0.u[1];
1315 1316 1317 1318 1319 1320 1321

	if (tag && len<=sizeof(ctx->Xi))
		return memcmp(ctx->Xi.c,tag,len);
	else
		return -1;
}

1322 1323 1324
void CRYPTO_gcm128_tag(GCM128_CONTEXT *ctx, unsigned char *tag, size_t len)
{
	CRYPTO_gcm128_finish(ctx, NULL, 0);
1325
	memcpy(tag, ctx->Xi.c, len<=sizeof(ctx->Xi.c)?len:sizeof(ctx->Xi.c));
1326 1327
}

1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343
GCM128_CONTEXT *CRYPTO_gcm128_new(void *key, block128_f block)
{
	GCM128_CONTEXT *ret;

	if ((ret = (GCM128_CONTEXT *)OPENSSL_malloc(sizeof(GCM128_CONTEXT))))
		CRYPTO_gcm128_init(ret,key,block);

	return ret;
}

void CRYPTO_gcm128_release(GCM128_CONTEXT *ctx)
{
	if (ctx) {
		OPENSSL_cleanse(ctx,sizeof(*ctx));
		OPENSSL_free(ctx);
	}
1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356
}

#if defined(SELFTEST)
#include <stdio.h>
#include <openssl/aes.h>

/* Test Case 1 */
static const u8	K1[16],
		*P1=NULL,
		*A1=NULL,
		IV1[12],
		*C1=NULL,
		T1[]=  {0x58,0xe2,0xfc,0xce,0xfa,0x7e,0x30,0x61,0x36,0x7f,0x1d,0x57,0xa4,0xe7,0x45,0x5a};
1357

1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377
/* Test Case 2 */
#define K2 K1
#define A2 A1
#define IV2 IV1
static const u8	P2[16],
		C2[]=  {0x03,0x88,0xda,0xce,0x60,0xb6,0xa3,0x92,0xf3,0x28,0xc2,0xb9,0x71,0xb2,0xfe,0x78},
		T2[]=  {0xab,0x6e,0x47,0xd4,0x2c,0xec,0x13,0xbd,0xf5,0x3a,0x67,0xb2,0x12,0x57,0xbd,0xdf};

/* Test Case 3 */
#define A3 A2
static const u8	K3[]=  {0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08},
		P3[]=  {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
			0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
			0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
			0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39,0x1a,0xaf,0xd2,0x55},
		IV3[]= {0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad,0xde,0xca,0xf8,0x88},
		C3[]=  {0x42,0x83,0x1e,0xc2,0x21,0x77,0x74,0x24,0x4b,0x72,0x21,0xb7,0x84,0xd0,0xd4,0x9c,
			0xe3,0xaa,0x21,0x2f,0x2c,0x02,0xa4,0xe0,0x35,0xc1,0x7e,0x23,0x29,0xac,0xa1,0x2e,
			0x21,0xd5,0x14,0xb2,0x54,0x66,0x93,0x1c,0x7d,0x8f,0x6a,0x5a,0xac,0x84,0xaa,0x05,
			0x1b,0xa3,0x0b,0x39,0x6a,0x0a,0xac,0x97,0x3d,0x58,0xe0,0x91,0x47,0x3f,0x59,0x85},
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Andy Polyakov 已提交
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		T3[]=  {0x4d,0x5c,0x2a,0xf3,0x27,0xcd,0x64,0xa6,0x2c,0xf3,0x5a,0xbd,0x2b,0xa6,0xfa,0xb4};
1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405

/* Test Case 4 */
#define K4 K3
#define IV4 IV3
static const u8	P4[]=  {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
			0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
			0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
			0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39},
		A4[]=  {0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,
			0xab,0xad,0xda,0xd2},
		C4[]=  {0x42,0x83,0x1e,0xc2,0x21,0x77,0x74,0x24,0x4b,0x72,0x21,0xb7,0x84,0xd0,0xd4,0x9c,
			0xe3,0xaa,0x21,0x2f,0x2c,0x02,0xa4,0xe0,0x35,0xc1,0x7e,0x23,0x29,0xac,0xa1,0x2e,
			0x21,0xd5,0x14,0xb2,0x54,0x66,0x93,0x1c,0x7d,0x8f,0x6a,0x5a,0xac,0x84,0xaa,0x05,
			0x1b,0xa3,0x0b,0x39,0x6a,0x0a,0xac,0x97,0x3d,0x58,0xe0,0x91},
		T4[]=  {0x5b,0xc9,0x4f,0xbc,0x32,0x21,0xa5,0xdb,0x94,0xfa,0xe9,0x5a,0xe7,0x12,0x1a,0x47};

/* Test Case 5 */
#define K5 K4
#define P5 P4
static const u8	A5[]=  {0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,
			0xab,0xad,0xda,0xd2},
		IV5[]= {0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad},
		C5[]=  {0x61,0x35,0x3b,0x4c,0x28,0x06,0x93,0x4a,0x77,0x7f,0xf5,0x1f,0xa2,0x2a,0x47,0x55,
			0x69,0x9b,0x2a,0x71,0x4f,0xcd,0xc6,0xf8,0x37,0x66,0xe5,0xf9,0x7b,0x6c,0x74,0x23,
			0x73,0x80,0x69,0x00,0xe4,0x9f,0x24,0xb2,0x2b,0x09,0x75,0x44,0xd4,0x89,0x6b,0x42,
			0x49,0x89,0xb5,0xe1,0xeb,0xac,0x0f,0x07,0xc2,0x3f,0x45,0x98},
		T5[]=  {0x36,0x12,0xd2,0xe7,0x9e,0x3b,0x07,0x85,0x56,0x1b,0xe1,0x4a,0xac,0xa2,0xfc,0xcb};
1406

1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567
/* Test Case 6 */
#define K6 K5
#define P6 P5
#define A6 A5
static const u8	IV6[]= {0x93,0x13,0x22,0x5d,0xf8,0x84,0x06,0xe5,0x55,0x90,0x9c,0x5a,0xff,0x52,0x69,0xaa,
			0x6a,0x7a,0x95,0x38,0x53,0x4f,0x7d,0xa1,0xe4,0xc3,0x03,0xd2,0xa3,0x18,0xa7,0x28,
			0xc3,0xc0,0xc9,0x51,0x56,0x80,0x95,0x39,0xfc,0xf0,0xe2,0x42,0x9a,0x6b,0x52,0x54,
			0x16,0xae,0xdb,0xf5,0xa0,0xde,0x6a,0x57,0xa6,0x37,0xb3,0x9b},
		C6[]=  {0x8c,0xe2,0x49,0x98,0x62,0x56,0x15,0xb6,0x03,0xa0,0x33,0xac,0xa1,0x3f,0xb8,0x94,
			0xbe,0x91,0x12,0xa5,0xc3,0xa2,0x11,0xa8,0xba,0x26,0x2a,0x3c,0xca,0x7e,0x2c,0xa7,
			0x01,0xe4,0xa9,0xa4,0xfb,0xa4,0x3c,0x90,0xcc,0xdc,0xb2,0x81,0xd4,0x8c,0x7c,0x6f,
			0xd6,0x28,0x75,0xd2,0xac,0xa4,0x17,0x03,0x4c,0x34,0xae,0xe5},
		T6[]=  {0x61,0x9c,0xc5,0xae,0xff,0xfe,0x0b,0xfa,0x46,0x2a,0xf4,0x3c,0x16,0x99,0xd0,0x50};

/* Test Case 7 */
static const u8 K7[24],
		*P7=NULL,
		*A7=NULL,
		IV7[12],
		*C7=NULL,
		T7[]=  {0xcd,0x33,0xb2,0x8a,0xc7,0x73,0xf7,0x4b,0xa0,0x0e,0xd1,0xf3,0x12,0x57,0x24,0x35};

/* Test Case 8 */
#define K8 K7
#define IV8 IV7
#define A8 A7
static const u8	P8[16],
		C8[]=  {0x98,0xe7,0x24,0x7c,0x07,0xf0,0xfe,0x41,0x1c,0x26,0x7e,0x43,0x84,0xb0,0xf6,0x00},
		T8[]=  {0x2f,0xf5,0x8d,0x80,0x03,0x39,0x27,0xab,0x8e,0xf4,0xd4,0x58,0x75,0x14,0xf0,0xfb};

/* Test Case 9 */
#define A9 A8
static const u8	K9[]=  {0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08,
			0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c},
		P9[]=  {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
			0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
			0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
			0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39,0x1a,0xaf,0xd2,0x55},
		IV9[]= {0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad,0xde,0xca,0xf8,0x88},
		C9[]=  {0x39,0x80,0xca,0x0b,0x3c,0x00,0xe8,0x41,0xeb,0x06,0xfa,0xc4,0x87,0x2a,0x27,0x57,
			0x85,0x9e,0x1c,0xea,0xa6,0xef,0xd9,0x84,0x62,0x85,0x93,0xb4,0x0c,0xa1,0xe1,0x9c,
			0x7d,0x77,0x3d,0x00,0xc1,0x44,0xc5,0x25,0xac,0x61,0x9d,0x18,0xc8,0x4a,0x3f,0x47,
			0x18,0xe2,0x44,0x8b,0x2f,0xe3,0x24,0xd9,0xcc,0xda,0x27,0x10,0xac,0xad,0xe2,0x56},
		T9[]=  {0x99,0x24,0xa7,0xc8,0x58,0x73,0x36,0xbf,0xb1,0x18,0x02,0x4d,0xb8,0x67,0x4a,0x14};

/* Test Case 10 */
#define K10 K9
#define IV10 IV9
static const u8	P10[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
			0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
			0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
			0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39},
		A10[]= {0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,
			0xab,0xad,0xda,0xd2},
		C10[]= {0x39,0x80,0xca,0x0b,0x3c,0x00,0xe8,0x41,0xeb,0x06,0xfa,0xc4,0x87,0x2a,0x27,0x57,
			0x85,0x9e,0x1c,0xea,0xa6,0xef,0xd9,0x84,0x62,0x85,0x93,0xb4,0x0c,0xa1,0xe1,0x9c,
			0x7d,0x77,0x3d,0x00,0xc1,0x44,0xc5,0x25,0xac,0x61,0x9d,0x18,0xc8,0x4a,0x3f,0x47,
			0x18,0xe2,0x44,0x8b,0x2f,0xe3,0x24,0xd9,0xcc,0xda,0x27,0x10},
		T10[]= {0x25,0x19,0x49,0x8e,0x80,0xf1,0x47,0x8f,0x37,0xba,0x55,0xbd,0x6d,0x27,0x61,0x8c};

/* Test Case 11 */
#define K11 K10
#define P11 P10
#define A11 A10
static const u8	IV11[]={0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad},
		C11[]= {0x0f,0x10,0xf5,0x99,0xae,0x14,0xa1,0x54,0xed,0x24,0xb3,0x6e,0x25,0x32,0x4d,0xb8,
			0xc5,0x66,0x63,0x2e,0xf2,0xbb,0xb3,0x4f,0x83,0x47,0x28,0x0f,0xc4,0x50,0x70,0x57,
			0xfd,0xdc,0x29,0xdf,0x9a,0x47,0x1f,0x75,0xc6,0x65,0x41,0xd4,0xd4,0xda,0xd1,0xc9,
			0xe9,0x3a,0x19,0xa5,0x8e,0x8b,0x47,0x3f,0xa0,0xf0,0x62,0xf7},
		T11[]= {0x65,0xdc,0xc5,0x7f,0xcf,0x62,0x3a,0x24,0x09,0x4f,0xcc,0xa4,0x0d,0x35,0x33,0xf8};

/* Test Case 12 */
#define K12 K11
#define P12 P11
#define A12 A11
static const u8	IV12[]={0x93,0x13,0x22,0x5d,0xf8,0x84,0x06,0xe5,0x55,0x90,0x9c,0x5a,0xff,0x52,0x69,0xaa,
			0x6a,0x7a,0x95,0x38,0x53,0x4f,0x7d,0xa1,0xe4,0xc3,0x03,0xd2,0xa3,0x18,0xa7,0x28,
			0xc3,0xc0,0xc9,0x51,0x56,0x80,0x95,0x39,0xfc,0xf0,0xe2,0x42,0x9a,0x6b,0x52,0x54,
			0x16,0xae,0xdb,0xf5,0xa0,0xde,0x6a,0x57,0xa6,0x37,0xb3,0x9b},
		C12[]= {0xd2,0x7e,0x88,0x68,0x1c,0xe3,0x24,0x3c,0x48,0x30,0x16,0x5a,0x8f,0xdc,0xf9,0xff,
			0x1d,0xe9,0xa1,0xd8,0xe6,0xb4,0x47,0xef,0x6e,0xf7,0xb7,0x98,0x28,0x66,0x6e,0x45,
			0x81,0xe7,0x90,0x12,0xaf,0x34,0xdd,0xd9,0xe2,0xf0,0x37,0x58,0x9b,0x29,0x2d,0xb3,
			0xe6,0x7c,0x03,0x67,0x45,0xfa,0x22,0xe7,0xe9,0xb7,0x37,0x3b},
		T12[]= {0xdc,0xf5,0x66,0xff,0x29,0x1c,0x25,0xbb,0xb8,0x56,0x8f,0xc3,0xd3,0x76,0xa6,0xd9};

/* Test Case 13 */
static const u8	K13[32],
		*P13=NULL,
		*A13=NULL,
		IV13[12],
		*C13=NULL,
		T13[]={0x53,0x0f,0x8a,0xfb,0xc7,0x45,0x36,0xb9,0xa9,0x63,0xb4,0xf1,0xc4,0xcb,0x73,0x8b};

/* Test Case 14 */
#define K14 K13
#define A14 A13
static const u8	P14[16],
		IV14[12],
		C14[]= {0xce,0xa7,0x40,0x3d,0x4d,0x60,0x6b,0x6e,0x07,0x4e,0xc5,0xd3,0xba,0xf3,0x9d,0x18},
		T14[]= {0xd0,0xd1,0xc8,0xa7,0x99,0x99,0x6b,0xf0,0x26,0x5b,0x98,0xb5,0xd4,0x8a,0xb9,0x19};

/* Test Case 15 */
#define A15 A14
static const u8	K15[]= {0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08,
			0xfe,0xff,0xe9,0x92,0x86,0x65,0x73,0x1c,0x6d,0x6a,0x8f,0x94,0x67,0x30,0x83,0x08},
		P15[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
			0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
			0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
			0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39,0x1a,0xaf,0xd2,0x55},
		IV15[]={0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad,0xde,0xca,0xf8,0x88},
		C15[]= {0x52,0x2d,0xc1,0xf0,0x99,0x56,0x7d,0x07,0xf4,0x7f,0x37,0xa3,0x2a,0x84,0x42,0x7d,
			0x64,0x3a,0x8c,0xdc,0xbf,0xe5,0xc0,0xc9,0x75,0x98,0xa2,0xbd,0x25,0x55,0xd1,0xaa,
			0x8c,0xb0,0x8e,0x48,0x59,0x0d,0xbb,0x3d,0xa7,0xb0,0x8b,0x10,0x56,0x82,0x88,0x38,
			0xc5,0xf6,0x1e,0x63,0x93,0xba,0x7a,0x0a,0xbc,0xc9,0xf6,0x62,0x89,0x80,0x15,0xad},
		T15[]= {0xb0,0x94,0xda,0xc5,0xd9,0x34,0x71,0xbd,0xec,0x1a,0x50,0x22,0x70,0xe3,0xcc,0x6c};

/* Test Case 16 */
#define K16 K15
#define IV16 IV15
static const u8	P16[]= {0xd9,0x31,0x32,0x25,0xf8,0x84,0x06,0xe5,0xa5,0x59,0x09,0xc5,0xaf,0xf5,0x26,0x9a,
			0x86,0xa7,0xa9,0x53,0x15,0x34,0xf7,0xda,0x2e,0x4c,0x30,0x3d,0x8a,0x31,0x8a,0x72,
			0x1c,0x3c,0x0c,0x95,0x95,0x68,0x09,0x53,0x2f,0xcf,0x0e,0x24,0x49,0xa6,0xb5,0x25,
			0xb1,0x6a,0xed,0xf5,0xaa,0x0d,0xe6,0x57,0xba,0x63,0x7b,0x39},
		A16[]= {0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,0xfe,0xed,0xfa,0xce,0xde,0xad,0xbe,0xef,
			0xab,0xad,0xda,0xd2},
		C16[]= {0x52,0x2d,0xc1,0xf0,0x99,0x56,0x7d,0x07,0xf4,0x7f,0x37,0xa3,0x2a,0x84,0x42,0x7d,
			0x64,0x3a,0x8c,0xdc,0xbf,0xe5,0xc0,0xc9,0x75,0x98,0xa2,0xbd,0x25,0x55,0xd1,0xaa,
			0x8c,0xb0,0x8e,0x48,0x59,0x0d,0xbb,0x3d,0xa7,0xb0,0x8b,0x10,0x56,0x82,0x88,0x38,
			0xc5,0xf6,0x1e,0x63,0x93,0xba,0x7a,0x0a,0xbc,0xc9,0xf6,0x62},
		T16[]= {0x76,0xfc,0x6e,0xce,0x0f,0x4e,0x17,0x68,0xcd,0xdf,0x88,0x53,0xbb,0x2d,0x55,0x1b};

/* Test Case 17 */
#define K17 K16
#define P17 P16
#define A17 A16
static const u8	IV17[]={0xca,0xfe,0xba,0xbe,0xfa,0xce,0xdb,0xad},
		C17[]= {0xc3,0x76,0x2d,0xf1,0xca,0x78,0x7d,0x32,0xae,0x47,0xc1,0x3b,0xf1,0x98,0x44,0xcb,
			0xaf,0x1a,0xe1,0x4d,0x0b,0x97,0x6a,0xfa,0xc5,0x2f,0xf7,0xd7,0x9b,0xba,0x9d,0xe0,
			0xfe,0xb5,0x82,0xd3,0x39,0x34,0xa4,0xf0,0x95,0x4c,0xc2,0x36,0x3b,0xc7,0x3f,0x78,
			0x62,0xac,0x43,0x0e,0x64,0xab,0xe4,0x99,0xf4,0x7c,0x9b,0x1f},
		T17[]= {0x3a,0x33,0x7d,0xbf,0x46,0xa7,0x92,0xc4,0x5e,0x45,0x49,0x13,0xfe,0x2e,0xa8,0xf2};

/* Test Case 18 */
#define K18 K17
#define P18 P17
#define A18 A17
static const u8	IV18[]={0x93,0x13,0x22,0x5d,0xf8,0x84,0x06,0xe5,0x55,0x90,0x9c,0x5a,0xff,0x52,0x69,0xaa,
			0x6a,0x7a,0x95,0x38,0x53,0x4f,0x7d,0xa1,0xe4,0xc3,0x03,0xd2,0xa3,0x18,0xa7,0x28,
			0xc3,0xc0,0xc9,0x51,0x56,0x80,0x95,0x39,0xfc,0xf0,0xe2,0x42,0x9a,0x6b,0x52,0x54,
			0x16,0xae,0xdb,0xf5,0xa0,0xde,0x6a,0x57,0xa6,0x37,0xb3,0x9b},
		C18[]= {0x5a,0x8d,0xef,0x2f,0x0c,0x9e,0x53,0xf1,0xf7,0x5d,0x78,0x53,0x65,0x9e,0x2a,0x20,
			0xee,0xb2,0xb2,0x2a,0xaf,0xde,0x64,0x19,0xa0,0x58,0xab,0x4f,0x6f,0x74,0x6b,0xf4,
			0x0f,0xc0,0xc3,0xb7,0x80,0xf2,0x44,0x45,0x2d,0xa3,0xeb,0xf1,0xc5,0xd8,0x2c,0xde,
			0xa2,0x41,0x89,0x97,0x20,0x0e,0xf8,0x2e,0x44,0xae,0x7e,0x3f},
		T18[]= {0xa4,0x4a,0x82,0x66,0xee,0x1c,0x8e,0xb0,0xc8,0xb5,0xd4,0xcf,0x5a,0xe9,0xf1,0x9a};

#define TEST_CASE(n)	do {					\
	u8 out[sizeof(P##n)];					\
	AES_set_encrypt_key(K##n,sizeof(K##n)*8,&key);		\
	CRYPTO_gcm128_init(&ctx,&key,(block128_f)AES_encrypt);	\
	CRYPTO_gcm128_setiv(&ctx,IV##n,sizeof(IV##n));		\
1568
	memset(out,0,sizeof(out));				\
1569 1570
	if (A##n) CRYPTO_gcm128_aad(&ctx,A##n,sizeof(A##n));	\
	if (P##n) CRYPTO_gcm128_encrypt(&ctx,P##n,out,sizeof(out));	\
1571 1572
	if (CRYPTO_gcm128_finish(&ctx,T##n,16) ||		\
	    (C##n && memcmp(out,C##n,sizeof(out))))		\
1573
		ret++, printf ("encrypt test#%d failed.\n",n);	\
1574
	CRYPTO_gcm128_setiv(&ctx,IV##n,sizeof(IV##n));		\
1575
	memset(out,0,sizeof(out));				\
1576 1577
	if (A##n) CRYPTO_gcm128_aad(&ctx,A##n,sizeof(A##n));	\
	if (C##n) CRYPTO_gcm128_decrypt(&ctx,C##n,out,sizeof(out));	\
1578 1579 1580
	if (CRYPTO_gcm128_finish(&ctx,T##n,16) ||		\
	    (P##n && memcmp(out,P##n,sizeof(out))))		\
		ret++, printf ("decrypt test#%d failed.\n",n);	\
1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 1596 1597 1598 1599 1600 1601 1602 1603 1604 1605 1606 1607
	} while(0)

int main()
{
	GCM128_CONTEXT ctx;
	AES_KEY key;
	int ret=0;

	TEST_CASE(1);
	TEST_CASE(2);
	TEST_CASE(3);
	TEST_CASE(4);
	TEST_CASE(5);
	TEST_CASE(6);
	TEST_CASE(7);
	TEST_CASE(8);
	TEST_CASE(9);
	TEST_CASE(10);
	TEST_CASE(11);
	TEST_CASE(12);
	TEST_CASE(13);
	TEST_CASE(14);
	TEST_CASE(15);
	TEST_CASE(16);
	TEST_CASE(17);
	TEST_CASE(18);

1608
#ifdef OPENSSL_CPUID_OBJ
1609 1610 1611
	{
	size_t start,stop,gcm_t,ctr_t,OPENSSL_rdtsc();
	union { u64 u; u8 c[1024]; } buf;
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Andy Polyakov 已提交
1612
	int i;
1613 1614 1615 1616 1617 1618 1619 1620 1621 1622 1623

	AES_set_encrypt_key(K1,sizeof(K1)*8,&key);
	CRYPTO_gcm128_init(&ctx,&key,(block128_f)AES_encrypt);
	CRYPTO_gcm128_setiv(&ctx,IV1,sizeof(IV1));

	CRYPTO_gcm128_encrypt(&ctx,buf.c,buf.c,sizeof(buf));
	start = OPENSSL_rdtsc();
	CRYPTO_gcm128_encrypt(&ctx,buf.c,buf.c,sizeof(buf));
	gcm_t = OPENSSL_rdtsc() - start;

	CRYPTO_ctr128_encrypt(buf.c,buf.c,sizeof(buf),
1624
			&key,ctx.Yi.c,ctx.EKi.c,&ctx.mres,
1625 1626 1627
			(block128_f)AES_encrypt);
	start = OPENSSL_rdtsc();
	CRYPTO_ctr128_encrypt(buf.c,buf.c,sizeof(buf),
1628
			&key,ctx.Yi.c,ctx.EKi.c,&ctx.mres,
1629
			(block128_f)AES_encrypt);
1630 1631 1632 1633 1634 1635
	ctr_t = OPENSSL_rdtsc() - start;

	printf("%.2f-%.2f=%.2f\n",
			gcm_t/(double)sizeof(buf),
			ctr_t/(double)sizeof(buf),
			(gcm_t-ctr_t)/(double)sizeof(buf));
1636
#ifdef GHASH
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Andy Polyakov 已提交
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	GHASH(&ctx,buf.c,sizeof(buf));
1638
	start = OPENSSL_rdtsc();
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Andy Polyakov 已提交
1639
	for (i=0;i<100;++i) GHASH(&ctx,buf.c,sizeof(buf));
1640
	gcm_t = OPENSSL_rdtsc() - start;
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Andy Polyakov 已提交
1641
	printf("%.2f\n",gcm_t/(double)sizeof(buf)/(double)i);
1642
#endif
1643
	}
1644
#endif
1645

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	return ret;
}
#endif