Remove SSLv2 support

The only support for SSLv2 left is receiving a SSLv2 compatible client hello.

Reviewed-by: Richard Levitte <levitte@openssl.org>

1 files changed, 0 insertions, 197 deletions

diff --git a/ssl/s2_enc.c b/ssl/s2_enc.c
deleted file mode 100644
index 329006a7c9..0000000000
--- a/ssl/s2_enc.c
+++ /dev/null
@@ -1,197 +0,0 @@
-/* ssl/s2_enc.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.]
- */
-
-#include "ssl_locl.h"
-#ifndef OPENSSL_NO_SSL2
-#include <stdio.h>
-
-int ssl2_enc_init(SSL *s, int client)
-	{
-	/* Max number of bytes needed */
-	EVP_CIPHER_CTX *rs,*ws;
-	const EVP_CIPHER *c;
-	const EVP_MD *md;
-	int num;
-
-	if (!ssl_cipher_get_evp(s->session,&c,&md,NULL,NULL,NULL, 0))
-		{
-		ssl2_return_error(s,SSL2_PE_NO_CIPHER);
-		SSLerr(SSL_F_SSL2_ENC_INIT,SSL_R_PROBLEMS_MAPPING_CIPHER_FUNCTIONS);
-		return(0);
-		}
-	ssl_replace_hash(&s->read_hash,md);
-	ssl_replace_hash(&s->write_hash,md);
-
-	if ((s->enc_read_ctx == NULL) &&
-		((s->enc_read_ctx=(EVP_CIPHER_CTX *)
-		OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
-		goto err;
-
-	/* make sure it's intialized in case the malloc for enc_write_ctx fails
-	 * and we exit with an error */
-	rs= s->enc_read_ctx;
-	EVP_CIPHER_CTX_init(rs);
-
-	if ((s->enc_write_ctx == NULL) &&
-		((s->enc_write_ctx=(EVP_CIPHER_CTX *)
-		OPENSSL_malloc(sizeof(EVP_CIPHER_CTX))) == NULL))
-		goto err;
-
-	ws= s->enc_write_ctx;
-	EVP_CIPHER_CTX_init(ws);
-
-	num=c->key_len;
-	s->s2->key_material_length=num*2;
-	OPENSSL_assert(s->s2->key_material_length <= sizeof s->s2->key_material);
-
-	if (ssl2_generate_key_material(s) <= 0)
-		return 0;
-
-	OPENSSL_assert(c->iv_len <= (int)sizeof(s->session->key_arg));
-	EVP_EncryptInit_ex(ws,c,NULL,&(s->s2->key_material[(client)?num:0]),
-		s->session->key_arg);
-	EVP_DecryptInit_ex(rs,c,NULL,&(s->s2->key_material[(client)?0:num]),
-		s->session->key_arg);
-	s->s2->read_key=  &(s->s2->key_material[(client)?0:num]);
-	s->s2->write_key= &(s->s2->key_material[(client)?num:0]);
-	return(1);
-err:
-	SSLerr(SSL_F_SSL2_ENC_INIT,ERR_R_MALLOC_FAILURE);
-	return(0);
-	}
-
-/* read/writes from s->s2->mac_data using length for encrypt and 
- * decrypt.  It sets s->s2->padding and s->[rw]length
- * if we are encrypting
- * Returns 0 on error and 1 on success */
-int ssl2_enc(SSL *s, int send)
-	{
-	EVP_CIPHER_CTX *ds;
-	unsigned long l;
-	int bs;
-
-	if (send)
-		{
-		ds=s->enc_write_ctx;
-		l=s->s2->wlength;
-		}
-	else
-		{
-		ds=s->enc_read_ctx;
-		l=s->s2->rlength;
-		}
-
-	/* check for NULL cipher */
-	if (ds == NULL) return 1;
-
-
-	bs=ds->cipher->block_size;
-	/* This should be using (bs-1) and bs instead of 7 and 8, but
-	 * what the hell. */
-	if (bs == 8)
-		l=(l+7)/8*8;
-
-	if(EVP_Cipher(ds,s->s2->mac_data,s->s2->mac_data,l) < 1)
-		return 0;
-
-	return 1;
-	}
-
-void ssl2_mac(SSL *s, unsigned char *md, int send)
-	{
-	EVP_MD_CTX c;
-	unsigned char sequence[4],*p,*sec,*act;
-	unsigned long seq;
-	unsigned int len;
-
-	if (send)
-		{
-		seq=s->s2->write_sequence;
-		sec=s->s2->write_key;
-		len=s->s2->wact_data_length;
-		act=s->s2->wact_data;
-		}
-	else
-		{
-		seq=s->s2->read_sequence;
-		sec=s->s2->read_key;
-		len=s->s2->ract_data_length;
-		act=s->s2->ract_data;
-		}
-
-	p= &(sequence[0]);
-	l2n(seq,p);
-
-	/* There has to be a MAC algorithm. */
-	EVP_MD_CTX_init(&c);
-	EVP_MD_CTX_copy(&c, s->read_hash);
-	EVP_DigestUpdate(&c,sec,
-		EVP_CIPHER_CTX_key_length(s->enc_read_ctx));
-	EVP_DigestUpdate(&c,act,len); 
-	/* the above line also does the pad data */
-	EVP_DigestUpdate(&c,sequence,4); 
-	EVP_DigestFinal_ex(&c,md,NULL);
-	EVP_MD_CTX_cleanup(&c);
-	}
-#else /* !OPENSSL_NO_SSL2 */
-
-# if PEDANTIC
-static void *dummy=&dummy;
-# endif
-
-#endif