Delete bundled copy of OpenSSL and replace with README.

openssl/crypto/evp/digest.c

Index: openssl/crypto/evp/digest.c
diff --git a/openssl/crypto/evp/digest.c b/openssl/crypto/evp/digest.c
deleted file mode 100644
index 6fc469f9c452f9b9a7e43e88a8592189a259896d..0000000000000000000000000000000000000000
--- a/openssl/crypto/evp/digest.c
+++ /dev/null
@@ -1,404 +0,0 @@
-/* crypto/evp/digest.c */
-/* Copyright (C) 1995-1998 Eric Young (eay@cryptsoft.com)
- * All rights reserved.
- *
- * This package is an SSL implementation written
- * by Eric Young (eay@cryptsoft.com).
- * The implementation was written so as to conform with Netscapes SSL.
- * 
- * This library is free for commercial and non-commercial use as long as
- * the following conditions are aheared to.  The following conditions
- * apply to all code found in this distribution, be it the RC4, RSA,
- * lhash, DES, etc., code; not just the SSL code.  The SSL documentation
- * included with this distribution is covered by the same copyright terms
- * except that the holder is Tim Hudson (tjh@cryptsoft.com).
- * 
- * Copyright remains Eric Young's, and as such any Copyright notices in
- * the code are not to be removed.
- * If this package is used in a product, Eric Young should be given attribution
- * as the author of the parts of the library used.
- * This can be in the form of a textual message at program startup or
- * in documentation (online or textual) provided with the package.
- * 
- * 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 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 acknowledgement:
- *    "This product includes cryptographic software written by
- *     Eric Young (eay@cryptsoft.com)"
- *    The word 'cryptographic' can be left out if the rouines from the library
- *    being used are not cryptographic related :-).
- * 4. If you include any Windows specific code (or a derivative thereof) from 
- *    the apps directory (application code) you must include an acknowledgement:
- *    "This product includes software written by Tim Hudson (tjh@cryptsoft.com)"
- * 
- * THIS SOFTWARE IS PROVIDED BY ERIC YOUNG ``AS IS'' AND
- * ANY EXPRESS 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 AUTHOR OR 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.
- * 
- * The licence and distribution terms for any publically available version or
- * derivative of this code cannot be changed.  i.e. this code cannot simply be
- * copied and put under another distribution licence
- * [including the GNU Public Licence.]
- */
-/* ====================================================================
- * Copyright (c) 1998-2001 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.
- * ====================================================================
- *
- * This product includes cryptographic software written by Eric Young
- * (eay@cryptsoft.com).  This product includes software written by Tim
- * Hudson (tjh@cryptsoft.com).
- *
- */
-
-#include <stdio.h>
-#include "cryptlib.h"
-#include <openssl/objects.h>
-#include <openssl/evp.h>
-#ifndef OPENSSL_NO_ENGINE
-#include <openssl/engine.h>
-#endif
-
-#ifdef OPENSSL_FIPS
-#include <openssl/fips.h>
-#endif
-
-void EVP_MD_CTX_init(EVP_MD_CTX *ctx)
-	{
-	memset(ctx,'\0',sizeof *ctx);
-	}
-
-EVP_MD_CTX *EVP_MD_CTX_create(void)
-	{
-	EVP_MD_CTX *ctx=OPENSSL_malloc(sizeof *ctx);
-
-	if (ctx)
-		EVP_MD_CTX_init(ctx);
-
-	return ctx;
-	}
-
-int EVP_DigestInit(EVP_MD_CTX *ctx, const EVP_MD *type)
-	{
-	EVP_MD_CTX_init(ctx);
-	return EVP_DigestInit_ex(ctx, type, NULL);
-	}
-
-int EVP_DigestInit_ex(EVP_MD_CTX *ctx, const EVP_MD *type, ENGINE *impl)
-	{
-	EVP_MD_CTX_clear_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
-#ifndef OPENSSL_NO_ENGINE
-	/* Whether it's nice or not, "Inits" can be used on "Final"'d contexts
-	 * so this context may already have an ENGINE! Try to avoid releasing
-	 * the previous handle, re-querying for an ENGINE, and having a
-	 * reinitialisation, when it may all be unecessary. */
-	if (ctx->engine && ctx->digest && (!type ||
-			(type && (type->type == ctx->digest->type))))
-		goto skip_to_init;
-	if (type)
-		{
-		/* Ensure an ENGINE left lying around from last time is cleared
-		 * (the previous check attempted to avoid this if the same
-		 * ENGINE and EVP_MD could be used). */
-		if(ctx->engine)
-			ENGINE_finish(ctx->engine);
-		if(impl)
-			{
-			if (!ENGINE_init(impl))
-				{
-				EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZATION_ERROR);
-				return 0;
-				}
-			}
-		else
-			/* Ask if an ENGINE is reserved for this job */
-			impl = ENGINE_get_digest_engine(type->type);
-		if(impl)
-			{
-			/* There's an ENGINE for this job ... (apparently) */
-			const EVP_MD *d = ENGINE_get_digest(impl, type->type);
-			if(!d)
-				{
-				/* Same comment from evp_enc.c */
-				EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_INITIALIZATION_ERROR);
-				ENGINE_finish(impl);
-				return 0;
-				}
-			/* We'll use the ENGINE's private digest definition */
-			type = d;
-			/* Store the ENGINE functional reference so we know
-			 * 'type' came from an ENGINE and we need to release
-			 * it when done. */
-			ctx->engine = impl;
-			}
-		else
-			ctx->engine = NULL;
-		}
-	else
-	if(!ctx->digest)
-		{
-		EVPerr(EVP_F_EVP_DIGESTINIT_EX,EVP_R_NO_DIGEST_SET);
-		return 0;
-		}
-#endif
-	if (ctx->digest != type)
-		{
-		if (ctx->digest && ctx->digest->ctx_size)
-			OPENSSL_free(ctx->md_data);
-		ctx->digest=type;
-		if (!(ctx->flags & EVP_MD_CTX_FLAG_NO_INIT) && type->ctx_size)
-			{
-			ctx->update = type->update;
-			ctx->md_data=OPENSSL_malloc(type->ctx_size);
-			if (ctx->md_data == NULL)
-				{
-				EVPerr(EVP_F_EVP_DIGESTINIT_EX,
-							ERR_R_MALLOC_FAILURE);
-				return 0;
-				}
-			}
-		}
-#ifndef OPENSSL_NO_ENGINE
-skip_to_init:
-#endif
-	if (ctx->pctx)
-		{
-		int r;
-		r = EVP_PKEY_CTX_ctrl(ctx->pctx, -1, EVP_PKEY_OP_TYPE_SIG,
-					EVP_PKEY_CTRL_DIGESTINIT, 0, ctx);
-		if (r <= 0 && (r != -2))
-			return 0;
-		}
-	if (ctx->flags & EVP_MD_CTX_FLAG_NO_INIT)
-		return 1;
-#ifdef OPENSSL_FIPS
-	if (FIPS_mode())
-		{
-		if (FIPS_digestinit(ctx, type))
-			return 1;
-		OPENSSL_free(ctx->md_data);
-		ctx->md_data = NULL;
-		return 0;
-		}
-#endif
-	return ctx->digest->init(ctx);
-	}
-
-int EVP_DigestUpdate(EVP_MD_CTX *ctx, const void *data, size_t count)
-	{
-#ifdef OPENSSL_FIPS
-	return FIPS_digestupdate(ctx, data, count);
-#else
-	return ctx->update(ctx,data,count);
-#endif
-	}
-
-/* The caller can assume that this removes any secret data from the context */
-int EVP_DigestFinal(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
-	{
-	int ret;
-	ret = EVP_DigestFinal_ex(ctx, md, size);
-	EVP_MD_CTX_cleanup(ctx);
-	return ret;
-	}
-
-/* The caller can assume that this removes any secret data from the context */
-int EVP_DigestFinal_ex(EVP_MD_CTX *ctx, unsigned char *md, unsigned int *size)
-	{
-#ifdef OPENSSL_FIPS
-	return FIPS_digestfinal(ctx, md, size);
-#else
-	int ret;
-
-	OPENSSL_assert(ctx->digest->md_size <= EVP_MAX_MD_SIZE);
-	ret=ctx->digest->final(ctx,md);
-	if (size != NULL)
-		*size=ctx->digest->md_size;
-	if (ctx->digest->cleanup)
-		{
-		ctx->digest->cleanup(ctx);
-		EVP_MD_CTX_set_flags(ctx,EVP_MD_CTX_FLAG_CLEANED);
-		}
-	memset(ctx->md_data,0,ctx->digest->ctx_size);
-	return ret;
-#endif
-	}
-
-int EVP_MD_CTX_copy(EVP_MD_CTX *out, const EVP_MD_CTX *in)
-	{
-	EVP_MD_CTX_init(out);
-	return EVP_MD_CTX_copy_ex(out, in);
-	}
-
-int EVP_MD_CTX_copy_ex(EVP_MD_CTX *out, const EVP_MD_CTX *in)
-	{
-	unsigned char *tmp_buf;
-	if ((in == NULL) || (in->digest == NULL))
-		{
-		EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,EVP_R_INPUT_NOT_INITIALIZED);
-		return 0;
-		}
-#ifndef OPENSSL_NO_ENGINE
-	/* Make sure it's safe to copy a digest context using an ENGINE */
-	if (in->engine && !ENGINE_init(in->engine))
-		{
-		EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_ENGINE_LIB);
-		return 0;
-		}
-#endif
-
-	if (out->digest == in->digest)
-		{
-		tmp_buf = out->md_data;
-	    	EVP_MD_CTX_set_flags(out,EVP_MD_CTX_FLAG_REUSE);
-		}
-	else tmp_buf = NULL;
-	EVP_MD_CTX_cleanup(out);
-	memcpy(out,in,sizeof *out);
-
-	if (in->md_data && out->digest->ctx_size)
-		{
-		if (tmp_buf)
-			out->md_data = tmp_buf;
-		else
-			{
-			out->md_data=OPENSSL_malloc(out->digest->ctx_size);
-			if (!out->md_data)
-				{
-				EVPerr(EVP_F_EVP_MD_CTX_COPY_EX,ERR_R_MALLOC_FAILURE);
-				return 0;
-				}
-			}
-		memcpy(out->md_data,in->md_data,out->digest->ctx_size);
-		}
-
-	out->update = in->update;
-
-	if (in->pctx)
-		{
-		out->pctx = EVP_PKEY_CTX_dup(in->pctx);
-		if (!out->pctx)
-			{
-			EVP_MD_CTX_cleanup(out);
-			return 0;
-			}
-		}
-
-	if (out->digest->copy)
-		return out->digest->copy(out,in);
-	
-	return 1;
-	}
-
-int EVP_Digest(const void *data, size_t count,
-		unsigned char *md, unsigned int *size, const EVP_MD *type, ENGINE *impl)
-	{
-	EVP_MD_CTX ctx;
-	int ret;
-
-	EVP_MD_CTX_init(&ctx);
-	EVP_MD_CTX_set_flags(&ctx,EVP_MD_CTX_FLAG_ONESHOT);
-	ret=EVP_DigestInit_ex(&ctx, type, impl)
-	  && EVP_DigestUpdate(&ctx, data, count)
-	  && EVP_DigestFinal_ex(&ctx, md, size);
-	EVP_MD_CTX_cleanup(&ctx);
-
-	return ret;
-	}
-
-void EVP_MD_CTX_destroy(EVP_MD_CTX *ctx)
-	{
-	EVP_MD_CTX_cleanup(ctx);
-	OPENSSL_free(ctx);
-	}
-
-/* This call frees resources associated with the context */
-int EVP_MD_CTX_cleanup(EVP_MD_CTX *ctx)
-	{
-#ifndef OPENSSL_FIPS
-	/* Don't assume ctx->md_data was cleaned in EVP_Digest_Final,
-	 * because sometimes only copies of the context are ever finalised.
-	 */
-	if (ctx->digest && ctx->digest->cleanup
-	    && !EVP_MD_CTX_test_flags(ctx,EVP_MD_CTX_FLAG_CLEANED))
-		ctx->digest->cleanup(ctx);
-	if (ctx->digest && ctx->digest->ctx_size && ctx->md_data
-	    && !EVP_MD_CTX_test_flags(ctx, EVP_MD_CTX_FLAG_REUSE))
-		{
-		OPENSSL_cleanse(ctx->md_data,ctx->digest->ctx_size);
-		OPENSSL_free(ctx->md_data);
-		}
-#endif
-	if (ctx->pctx)
-		EVP_PKEY_CTX_free(ctx->pctx);
-#ifndef OPENSSL_NO_ENGINE
-	if(ctx->engine)
-		/* The EVP_MD we used belongs to an ENGINE, release the
-		 * functional reference we held for this reason. */
-		ENGINE_finish(ctx->engine);
-#endif
-#ifdef OPENSSL_FIPS
-	FIPS_md_ctx_cleanup(ctx);
-#endif
-	memset(ctx,'\0',sizeof *ctx);
-
-	return 1;
-	}