Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/chacha/chacha_enc.c

Index: openssl/crypto/chacha/chacha_enc.c
diff --git a/openssl/crypto/chacha/chacha_enc.c b/openssl/crypto/chacha/chacha_enc.c
deleted file mode 100644
index 2d6b076c3e00b391b47a886a915a922f9f47b728..0000000000000000000000000000000000000000
--- a/openssl/crypto/chacha/chacha_enc.c
+++ /dev/null
@@ -1,187 +0,0 @@
-/*
- *  Chacha stream algorithm.
- *
- *  Created on: Jun, 2013
- *  Author: Elie Bursztein (elieb@google.com)
- *
- *  Adapted from the estream code by D. Bernstein.
- */
-/* ====================================================================
- * 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.
- * ====================================================================
- */
-
-#include <stdint.h>
-#include <string.h>
-#include <openssl/opensslconf.h>
-
-#if !defined(OPENSSL_NO_CHACHA)
-
-#include <openssl/crypto.h>
-#include <openssl/chacha.h>
-
-/* sigma contains the ChaCha constants, which happen to be an ASCII string. */
-static const char sigma[16] = "expand 32-byte k";
-
-#define ROTATE(v, n) (((v) << (n)) | ((v) >> (32 - (n))))
-#define XOR(v, w) ((v) ^ (w))
-#define PLUS(x, y) ((x) + (y))
-#define PLUSONE(v) (PLUS((v), 1))
-
-#define U32TO8_LITTLE(p, v) \
-	{ (p)[0] = (v >>  0) & 0xff; (p)[1] = (v >>  8) & 0xff; \
-	  (p)[2] = (v >> 16) & 0xff; (p)[3] = (v >> 24) & 0xff; }
-#define U8TO32_LITTLE(p)   \
-	(((uint32_t)((p)[0])      ) | ((uint32_t)((p)[1]) <<  8) | \
-	 ((uint32_t)((p)[2]) << 16) | ((uint32_t)((p)[3]) << 24)   )
-
-/* QUARTERROUND updates a, b, c, d with a ChaCha "quarter" round. */
-#define QUARTERROUND(a,b,c,d) \
-  x[a] = PLUS(x[a],x[b]); x[d] = ROTATE(XOR(x[d],x[a]),16); \
-  x[c] = PLUS(x[c],x[d]); x[b] = ROTATE(XOR(x[b],x[c]),12); \
-  x[a] = PLUS(x[a],x[b]); x[d] = ROTATE(XOR(x[d],x[a]), 8); \
-  x[c] = PLUS(x[c],x[d]); x[b] = ROTATE(XOR(x[b],x[c]), 7);
-
-typedef unsigned int uint32_t;
-
-#if __arm__
-/* Defined in chacha_vec.c */
-void CRYPTO_chacha_20_neon(unsigned char *out,
-		           const unsigned char *in, size_t in_len,
-		           const unsigned char key[32],
-		           const unsigned char nonce[8],
-		           size_t counter);
-#endif
-
-/* chacha_core performs |num_rounds| rounds of ChaCha20 on the input words in
- * |input| and writes the 64 output bytes to |output|. */
-static void chacha_core(unsigned char output[64], const uint32_t input[16],
-			int num_rounds)
-	{
-	uint32_t x[16];
-	int i;
-
-	memcpy(x, input, sizeof(uint32_t) * 16);
-	for (i = 20; i > 0; i -= 2)
-		{
-		QUARTERROUND( 0, 4, 8,12)
-		QUARTERROUND( 1, 5, 9,13)
-		QUARTERROUND( 2, 6,10,14)
-		QUARTERROUND( 3, 7,11,15)
-		QUARTERROUND( 0, 5,10,15)
-		QUARTERROUND( 1, 6,11,12)
-		QUARTERROUND( 2, 7, 8,13)
-		QUARTERROUND( 3, 4, 9,14)
-		}
-
-	for (i = 0; i < 16; ++i)
-		x[i] = PLUS(x[i], input[i]);
-	for (i = 0; i < 16; ++i)
-		U32TO8_LITTLE(output + 4 * i, x[i]);
-	}
-
-void CRYPTO_chacha_20(unsigned char *out,
-		      const unsigned char *in, size_t in_len,
-		      const unsigned char key[32],
-		      const unsigned char nonce[8],
-		      size_t counter)
-	{
-	uint32_t input[16];
-	unsigned char buf[64];
-	size_t todo, i;
-
-#if __arm__
-	if (CRYPTO_is_NEON_capable() &&
-	    ((intptr_t)in & 15) == 0 &&
-	    ((intptr_t)out & 15) == 0)
-		{
-		CRYPTO_chacha_20_neon(out, in, in_len, key, nonce, counter);
-		return;
-		}
-#endif
-
-	input[0] = U8TO32_LITTLE(sigma + 0);
-	input[1] = U8TO32_LITTLE(sigma + 4);
-	input[2] = U8TO32_LITTLE(sigma + 8);
-	input[3] = U8TO32_LITTLE(sigma + 12);
-
-	input[4] = U8TO32_LITTLE(key + 0);
-	input[5] = U8TO32_LITTLE(key + 4);
-	input[6] = U8TO32_LITTLE(key + 8);
-	input[7] = U8TO32_LITTLE(key + 12);
-
-	input[8] = U8TO32_LITTLE(key + 16);
-	input[9] = U8TO32_LITTLE(key + 20);
-	input[10] = U8TO32_LITTLE(key + 24);
-	input[11] = U8TO32_LITTLE(key + 28);
-
-	input[12] = counter;
-	input[13] = ((uint64_t) counter) >> 32;
-	input[14] = U8TO32_LITTLE(nonce + 0);
-	input[15] = U8TO32_LITTLE(nonce + 4);
-
-	while (in_len > 0)
-		{
-		todo = sizeof(buf);
-		if (in_len < todo)
-			todo = in_len;
-
-		chacha_core(buf, input, 20);
-		for (i = 0; i < todo; i++)
-			out[i] = in[i] ^ buf[i];
-
-		out += todo;
-		in += todo;
-		in_len -= todo;
-
-		input[12]++;
-		if (input[12] == 0)
-			input[13]++;
-		}
-	}
-
-#endif  /* !OPENSSL_NO_CHACHA */