Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/chacha/chacha_vec.c

Index: openssl/crypto/chacha/chacha_vec.c
diff --git a/openssl/crypto/chacha/chacha_vec.c b/openssl/crypto/chacha/chacha_vec.c
deleted file mode 100644
index 274345d56b38663c28e3a001c504dba669c935e8..0000000000000000000000000000000000000000
--- a/openssl/crypto/chacha/chacha_vec.c
+++ /dev/null
@@ -1,352 +0,0 @@
-/* ====================================================================
- * Copyright (c) 2011-2013 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
- *    licensing@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.
- * ====================================================================
- */
-
-/* This implementation is by Ted Krovetz and was submitted to SUPERCOP and
- * marked as public domain. It was been altered to allow for non-aligned inputs
- * and to allow the block counter to be passed in specifically. */
-
-#include <string.h>
-#include <stdint.h>
-#include <openssl/opensslconf.h>
-
-#if !defined(OPENSSL_NO_CHACHA)
-
-#include <openssl/chacha.h>
-
-#ifndef CHACHA_RNDS
-#define CHACHA_RNDS 20    /* 8 (high speed), 20 (conservative), 12 (middle) */
-#endif
-
-/* Architecture-neutral way to specify 16-byte vector of ints              */
-typedef unsigned vec __attribute__ ((vector_size (16)));
-
-/* This implementation is designed for Neon, SSE and AltiVec machines. The
- * following specify how to do certain vector operations efficiently on
- * each architecture, using intrinsics.
- * This implementation supports parallel processing of multiple blocks,
- * including potentially using general-purpose registers.
- */
-#if __ARM_NEON__
-#include <arm_neon.h>
-#define GPR_TOO   1
-#define VBPI      2
-#define ONE       (vec)vsetq_lane_u32(1,vdupq_n_u32(0),0)
-#define LOAD(m)   (vec)(*((vec*)(m)))
-#define STORE(m,r) (*((vec*)(m))) = (r)
-#define ROTV1(x)  (vec)vextq_u32((uint32x4_t)x,(uint32x4_t)x,1)
-#define ROTV2(x)  (vec)vextq_u32((uint32x4_t)x,(uint32x4_t)x,2)
-#define ROTV3(x)  (vec)vextq_u32((uint32x4_t)x,(uint32x4_t)x,3)
-#define ROTW16(x) (vec)vrev32q_u16((uint16x8_t)x)
-#if __clang__
-#define ROTW7(x)  (x << ((vec){ 7, 7, 7, 7})) ^ (x >> ((vec){25,25,25,25}))
-#define ROTW8(x)  (x << ((vec){ 8, 8, 8, 8})) ^ (x >> ((vec){24,24,24,24}))
-#define ROTW12(x) (x << ((vec){12,12,12,12})) ^ (x >> ((vec){20,20,20,20}))
-#else
-#define ROTW7(x)  (vec)vsriq_n_u32(vshlq_n_u32((uint32x4_t)x,7),(uint32x4_t)x,25)
-#define ROTW8(x)  (vec)vsriq_n_u32(vshlq_n_u32((uint32x4_t)x,8),(uint32x4_t)x,24)
-#define ROTW12(x) (vec)vsriq_n_u32(vshlq_n_u32((uint32x4_t)x,12),(uint32x4_t)x,20)
-#endif
-#elif __SSE2__
-#include <emmintrin.h>
-#define GPR_TOO   0
-#if __clang__
-#define VBPI      4
-#else
-#define VBPI      3
-#endif
-#define ONE       (vec)_mm_set_epi32(0,0,0,1)
-#define LOAD(m)   (vec)_mm_loadu_si128((__m128i*)(m))
-#define STORE(m,r) _mm_storeu_si128((__m128i*)(m), (__m128i) (r))
-#define ROTV1(x)  (vec)_mm_shuffle_epi32((__m128i)x,_MM_SHUFFLE(0,3,2,1))
-#define ROTV2(x)  (vec)_mm_shuffle_epi32((__m128i)x,_MM_SHUFFLE(1,0,3,2))
-#define ROTV3(x)  (vec)_mm_shuffle_epi32((__m128i)x,_MM_SHUFFLE(2,1,0,3))
-#define ROTW7(x)  (vec)(_mm_slli_epi32((__m128i)x, 7) ^ _mm_srli_epi32((__m128i)x,25))
-#define ROTW12(x) (vec)(_mm_slli_epi32((__m128i)x,12) ^ _mm_srli_epi32((__m128i)x,20))
-#if __SSSE3__
-#include <tmmintrin.h>
-#define ROTW8(x)  (vec)_mm_shuffle_epi8((__m128i)x,_mm_set_epi8(14,13,12,15,10,9,8,11,6,5,4,7,2,1,0,3))
-#define ROTW16(x) (vec)_mm_shuffle_epi8((__m128i)x,_mm_set_epi8(13,12,15,14,9,8,11,10,5,4,7,6,1,0,3,2))
-#else
-#define ROTW8(x)  (vec)(_mm_slli_epi32((__m128i)x, 8) ^ _mm_srli_epi32((__m128i)x,24))
-#define ROTW16(x) (vec)(_mm_slli_epi32((__m128i)x,16) ^ _mm_srli_epi32((__m128i)x,16))
-#endif
-#else
-#error -- Implementation supports only machines with neon or SSE2
-#endif
-
-#ifndef REVV_BE
-#define REVV_BE(x)  (x)
-#endif
-
-#ifndef REVW_BE
-#define REVW_BE(x)  (x)
-#endif
-
-#define BPI      (VBPI + GPR_TOO)  /* Blocks computed per loop iteration   */
-
-#define DQROUND_VECTORS(a,b,c,d)                \
-    a += b; d ^= a; d = ROTW16(d);              \
-    c += d; b ^= c; b = ROTW12(b);              \
-    a += b; d ^= a; d = ROTW8(d);               \
-    c += d; b ^= c; b = ROTW7(b);               \
-    b = ROTV1(b); c = ROTV2(c);  d = ROTV3(d);  \
-    a += b; d ^= a; d = ROTW16(d);              \
-    c += d; b ^= c; b = ROTW12(b);              \
-    a += b; d ^= a; d = ROTW8(d);               \
-    c += d; b ^= c; b = ROTW7(b);               \
-    b = ROTV3(b); c = ROTV2(c); d = ROTV1(d);
-
-#define QROUND_WORDS(a,b,c,d) \
-  a = a+b; d ^= a; d = d<<16 | d>>16; \
-  c = c+d; b ^= c; b = b<<12 | b>>20; \
-  a = a+b; d ^= a; d = d<< 8 | d>>24; \
-  c = c+d; b ^= c; b = b<< 7 | b>>25;
-
-#define WRITE_XOR(in, op, d, v0, v1, v2, v3)                   \
-	STORE(op + d + 0, LOAD(in + d + 0) ^ REVV_BE(v0));      \
-	STORE(op + d + 4, LOAD(in + d + 4) ^ REVV_BE(v1));      \
-	STORE(op + d + 8, LOAD(in + d + 8) ^ REVV_BE(v2));      \
-	STORE(op + d +12, LOAD(in + d +12) ^ REVV_BE(v3));
-
-#if __ARM_NEON__
-/* For ARM, we can't depend on NEON support, so this function is compiled with
- * a different name, along with the generic code, and can be enabled at
- * run-time. */
-void CRYPTO_chacha_20_neon(
-#else
-void CRYPTO_chacha_20(
-#endif
-	unsigned char *out,
-	const unsigned char *in,
-	size_t inlen,
-	const unsigned char key[32],
-	const unsigned char nonce[8],
-	size_t counter)
-	{
-	unsigned iters, i, *op=(unsigned *)out, *ip=(unsigned *)in, *kp;
-#if defined(__ARM_NEON__)
-	unsigned *np;
-#endif
-	vec s0, s1, s2, s3;
-#if !defined(__ARM_NEON__) && !defined(__SSE2__)
-	__attribute__ ((aligned (16))) unsigned key[8], nonce[4];
-#endif
-	__attribute__ ((aligned (16))) unsigned chacha_const[] =
-		{0x61707865,0x3320646E,0x79622D32,0x6B206574};
-#if defined(__ARM_NEON__) || defined(__SSE2__)
-	kp = (unsigned *)key;
-#else
-	((vec *)key)[0] = REVV_BE(((vec *)key)[0]);
-	((vec *)key)[1] = REVV_BE(((vec *)key)[1]);
-	nonce[0] = REVW_BE(((unsigned *)nonce)[0]);
-	nonce[1] = REVW_BE(((unsigned *)nonce)[1]);
-	nonce[2] = REVW_BE(((unsigned *)nonce)[2]);
-	nonce[3] = REVW_BE(((unsigned *)nonce)[3]);
-	kp = (unsigned *)key;
-	np = (unsigned *)nonce;
-#endif
-#if defined(__ARM_NEON__)
-	np = (unsigned*) nonce;
-#endif
-	s0 = LOAD(chacha_const);
-	s1 = LOAD(&((vec*)kp)[0]);
-	s2 = LOAD(&((vec*)kp)[1]);
-	s3 = (vec){
-		counter & 0xffffffff,
-#if __ARM_NEON__
-		0,  /* can't right-shift 32 bits on a 32-bit system. */
-#else
-		counter >> 32,
-#endif
-		((uint32_t*)nonce)[0],
-		((uint32_t*)nonce)[1]
-	};
-
-	for (iters = 0; iters < inlen/(BPI*64); iters++)
-		{
-#if GPR_TOO
-		register unsigned x0, x1, x2, x3, x4, x5, x6, x7, x8,
-				  x9, x10, x11, x12, x13, x14, x15;
-#endif
-#if VBPI > 2
-		vec v8,v9,v10,v11;
-#endif
-#if VBPI > 3
-		vec v12,v13,v14,v15;
-#endif
-
-		vec v0,v1,v2,v3,v4,v5,v6,v7;
-		v4 = v0 = s0; v5 = v1 = s1; v6 = v2 = s2; v3 = s3;
-		v7 = v3 + ONE;
-#if VBPI > 2
-		v8 = v4; v9 = v5; v10 = v6;
-		v11 =  v7 + ONE;
-#endif
-#if VBPI > 3
-		v12 = v8; v13 = v9; v14 = v10;
-		v15 = v11 + ONE;
-#endif
-#if GPR_TOO
-		x0 = chacha_const[0]; x1 = chacha_const[1];
-		x2 = chacha_const[2]; x3 = chacha_const[3];
-		x4 = kp[0]; x5 = kp[1]; x6  = kp[2]; x7  = kp[3];
-		x8 = kp[4]; x9 = kp[5]; x10 = kp[6]; x11 = kp[7];
-		x12 = counter+BPI*iters+(BPI-1); x13 = 0;
-		x14 = np[0]; x15 = np[1];
-#endif
-		for (i = CHACHA_RNDS/2; i; i--)
-			{
-			DQROUND_VECTORS(v0,v1,v2,v3)
-			DQROUND_VECTORS(v4,v5,v6,v7)
-#if VBPI > 2
-			DQROUND_VECTORS(v8,v9,v10,v11)
-#endif
-#if VBPI > 3
-			DQROUND_VECTORS(v12,v13,v14,v15)
-#endif
-#if GPR_TOO
-			QROUND_WORDS( x0, x4, x8,x12)
-			QROUND_WORDS( x1, x5, x9,x13)
-			QROUND_WORDS( x2, x6,x10,x14)
-			QROUND_WORDS( x3, x7,x11,x15)
-			QROUND_WORDS( x0, x5,x10,x15)
-			QROUND_WORDS( x1, x6,x11,x12)
-			QROUND_WORDS( x2, x7, x8,x13)
-			QROUND_WORDS( x3, x4, x9,x14)
-#endif
-			}
-
-		WRITE_XOR(ip, op, 0, v0+s0, v1+s1, v2+s2, v3+s3)
-		s3 += ONE;
-		WRITE_XOR(ip, op, 16, v4+s0, v5+s1, v6+s2, v7+s3)
-		s3 += ONE;
-#if VBPI > 2
-		WRITE_XOR(ip, op, 32, v8+s0, v9+s1, v10+s2, v11+s3)
-		s3 += ONE;
-#endif
-#if VBPI > 3
-		WRITE_XOR(ip, op, 48, v12+s0, v13+s1, v14+s2, v15+s3)
-		s3 += ONE;
-#endif
-		ip += VBPI*16;
-		op += VBPI*16;
-#if GPR_TOO
-		op[0]  = REVW_BE(REVW_BE(ip[0])  ^ (x0  + chacha_const[0]));
-		op[1]  = REVW_BE(REVW_BE(ip[1])  ^ (x1  + chacha_const[1]));
-		op[2]  = REVW_BE(REVW_BE(ip[2])  ^ (x2  + chacha_const[2]));
-		op[3]  = REVW_BE(REVW_BE(ip[3])  ^ (x3  + chacha_const[3]));
-		op[4]  = REVW_BE(REVW_BE(ip[4])  ^ (x4  + kp[0]));
-		op[5]  = REVW_BE(REVW_BE(ip[5])  ^ (x5  + kp[1]));
-		op[6]  = REVW_BE(REVW_BE(ip[6])  ^ (x6  + kp[2]));
-		op[7]  = REVW_BE(REVW_BE(ip[7])  ^ (x7  + kp[3]));
-		op[8]  = REVW_BE(REVW_BE(ip[8])  ^ (x8  + kp[4]));
-		op[9]  = REVW_BE(REVW_BE(ip[9])  ^ (x9  + kp[5]));
-		op[10] = REVW_BE(REVW_BE(ip[10]) ^ (x10 + kp[6]));
-		op[11] = REVW_BE(REVW_BE(ip[11]) ^ (x11 + kp[7]));
-		op[12] = REVW_BE(REVW_BE(ip[12]) ^ (x12 + counter+BPI*iters+(BPI-1)));
-		op[13] = REVW_BE(REVW_BE(ip[13]) ^ (x13));
-		op[14] = REVW_BE(REVW_BE(ip[14]) ^ (x14 + np[0]));
-		op[15] = REVW_BE(REVW_BE(ip[15]) ^ (x15 + np[1]));
-		s3 += ONE;
-		ip += 16;
-		op += 16;
-#endif
-		}
-
-	for (iters = inlen%(BPI*64)/64; iters != 0; iters--)
-		{
-		vec v0 = s0, v1 = s1, v2 = s2, v3 = s3;
-		for (i = CHACHA_RNDS/2; i; i--)
-			{
-			DQROUND_VECTORS(v0,v1,v2,v3);
-			}
-		WRITE_XOR(ip, op, 0, v0+s0, v1+s1, v2+s2, v3+s3)
-		s3 += ONE;
-		ip += 16;
-		op += 16;
-		}
-
-	inlen = inlen % 64;
-	if (inlen)
-		{
-		__attribute__ ((aligned (16))) vec buf[4];
-		vec v0,v1,v2,v3;
-		v0 = s0; v1 = s1; v2 = s2; v3 = s3;
-		for (i = CHACHA_RNDS/2; i; i--)
-			{
-			DQROUND_VECTORS(v0,v1,v2,v3);
-			}
-
-		if (inlen >= 16)
-			{
-			STORE(op + 0, LOAD(ip + 0) ^ REVV_BE(v0 + s0));
-			if (inlen >= 32)
-				{
-				STORE(op + 4, LOAD(ip + 4) ^ REVV_BE(v1 + s1));
-				if (inlen >= 48)
-					{
-					STORE(op + 8, LOAD(ip +  8) ^
-						      REVV_BE(v2 + s2));
-					buf[3] = REVV_BE(v3 + s3);
-					}
-				else
-					buf[2] = REVV_BE(v2 + s2);
-				}
-			else
-				buf[1] = REVV_BE(v1 + s1);
-			}
-		else
-			buf[0] = REVV_BE(v0 + s0);
-
-		for (i=inlen & ~15; i<inlen; i++)
-			((char *)op)[i] = ((char *)ip)[i] ^ ((char *)buf)[i];
-		}
-	}
-
-#endif  /* !OPENSSL_NO_CHACHA */