Initial import

1 files changed, 193 insertions, 0 deletions

diff --git a/openssl/ssl/s2_enc.c b/openssl/ssl/s2_enc.c
new file mode 100644
index 00000000..ff3395f4
--- /dev/null
+++ b/openssl/ssl/s2_enc.c
@@ -0,0 +1,193 @@
+/* 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))
+		{
+		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 */
+void 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;
+
+
+	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;
+
+	EVP_Cipher(ds,s->s2->mac_data,s->s2->mac_data,l);
+	}
+
+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