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authorSimon L. B. Nielsen <simon@FreeBSD.org>2006-07-29 19:10:21 +0000
committerSimon L. B. Nielsen <simon@FreeBSD.org>2006-07-29 19:10:21 +0000
commit3b4e3dcb9f42dc9f4f864acf804677d7a3e0c233 (patch)
tree213a0c4d5ba3869f66ecf970819532048fed4a9d /crypto/openssl/ssl/d1_enc.c
parenta37fa6607ab9ce4dac1c683442960508178fd371 (diff)
downloadsrc-3b4e3dcb9f42dc9f4f864acf804677d7a3e0c233.tar.gz
src-3b4e3dcb9f42dc9f4f864acf804677d7a3e0c233.zip
Vendor import of OpenSSL 0.9.8b
Notes
Notes: svn path=/vendor-crypto/openssl/dist/; revision=160814
Diffstat (limited to 'crypto/openssl/ssl/d1_enc.c')
-rw-r--r--crypto/openssl/ssl/d1_enc.c281
1 files changed, 281 insertions, 0 deletions
diff --git a/crypto/openssl/ssl/d1_enc.c b/crypto/openssl/ssl/d1_enc.c
new file mode 100644
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+++ b/crypto/openssl/ssl/d1_enc.c
@@ -0,0 +1,281 @@
+/* ssl/d1_enc.c */
+/*
+ * DTLS implementation written by Nagendra Modadugu
+ * (nagendra@cs.stanford.edu) for the OpenSSL project 2005.
+ */
+/* ====================================================================
+ * Copyright (c) 1998-2005 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).
+ *
+ */
+/* 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 <stdio.h>
+#include "ssl_locl.h"
+#include <openssl/comp.h>
+#include <openssl/evp.h>
+#include <openssl/hmac.h>
+#include <openssl/md5.h>
+#include <openssl/rand.h>
+
+
+int dtls1_enc(SSL *s, int send)
+ {
+ SSL3_RECORD *rec;
+ EVP_CIPHER_CTX *ds;
+ unsigned long l;
+ int bs,i,ii,j,k,n=0;
+ const EVP_CIPHER *enc;
+
+ if (send)
+ {
+ if (s->write_hash != NULL)
+ n=EVP_MD_size(s->write_hash);
+ ds=s->enc_write_ctx;
+ rec= &(s->s3->wrec);
+ if (s->enc_write_ctx == NULL)
+ enc=NULL;
+ else
+ {
+ enc=EVP_CIPHER_CTX_cipher(s->enc_write_ctx);
+ if ( rec->data != rec->input)
+ /* we can't write into the input stream */
+ fprintf(stderr, "%s:%d: rec->data != rec->input\n",
+ __FILE__, __LINE__);
+ else if ( EVP_CIPHER_block_size(ds->cipher) > 1)
+ {
+ if (!RAND_bytes(rec->input, EVP_CIPHER_block_size(ds->cipher)))
+ return -1;
+ }
+ }
+ }
+ else
+ {
+ if (s->read_hash != NULL)
+ n=EVP_MD_size(s->read_hash);
+ ds=s->enc_read_ctx;
+ rec= &(s->s3->rrec);
+ if (s->enc_read_ctx == NULL)
+ enc=NULL;
+ else
+ enc=EVP_CIPHER_CTX_cipher(s->enc_read_ctx);
+ }
+
+#ifdef KSSL_DEBUG
+ printf("dtls1_enc(%d)\n", send);
+#endif /* KSSL_DEBUG */
+
+ if ((s->session == NULL) || (ds == NULL) ||
+ (enc == NULL))
+ {
+ memmove(rec->data,rec->input,rec->length);
+ rec->input=rec->data;
+ }
+ else
+ {
+ l=rec->length;
+ bs=EVP_CIPHER_block_size(ds->cipher);
+
+ if ((bs != 1) && send)
+ {
+ i=bs-((int)l%bs);
+
+ /* Add weird padding of upto 256 bytes */
+
+ /* we need to add 'i' padding bytes of value j */
+ j=i-1;
+ if (s->options & SSL_OP_TLS_BLOCK_PADDING_BUG)
+ {
+ if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
+ j++;
+ }
+ for (k=(int)l; k<(int)(l+i); k++)
+ rec->input[k]=j;
+ l+=i;
+ rec->length+=i;
+ }
+
+#ifdef KSSL_DEBUG
+ {
+ unsigned long ui;
+ printf("EVP_Cipher(ds=%p,rec->data=%p,rec->input=%p,l=%ld) ==>\n",
+ ds,rec->data,rec->input,l);
+ printf("\tEVP_CIPHER_CTX: %d buf_len, %d key_len [%d %d], %d iv_len\n",
+ ds->buf_len, ds->cipher->key_len,
+ DES_KEY_SZ, DES_SCHEDULE_SZ,
+ ds->cipher->iv_len);
+ printf("\t\tIV: ");
+ for (i=0; i<ds->cipher->iv_len; i++) printf("%02X", ds->iv[i]);
+ printf("\n");
+ printf("\trec->input=");
+ for (ui=0; ui<l; ui++) printf(" %02x", rec->input[ui]);
+ printf("\n");
+ }
+#endif /* KSSL_DEBUG */
+
+ if (!send)
+ {
+ if (l == 0 || l%bs != 0)
+ {
+ SSLerr(SSL_F_DTLS1_ENC,SSL_R_BLOCK_CIPHER_PAD_IS_WRONG);
+ ssl3_send_alert(s,SSL3_AL_FATAL,SSL_AD_DECRYPTION_FAILED);
+ return 0;
+ }
+ }
+
+ EVP_Cipher(ds,rec->data,rec->input,l);
+
+#ifdef KSSL_DEBUG
+ {
+ unsigned long i;
+ printf("\trec->data=");
+ for (i=0; i<l; i++)
+ printf(" %02x", rec->data[i]); printf("\n");
+ }
+#endif /* KSSL_DEBUG */
+
+ if ((bs != 1) && !send)
+ {
+ ii=i=rec->data[l-1]; /* padding_length */
+ i++;
+ if (s->options&SSL_OP_TLS_BLOCK_PADDING_BUG)
+ {
+ /* First packet is even in size, so check */
+ if ((memcmp(s->s3->read_sequence,
+ "\0\0\0\0\0\0\0\0",8) == 0) && !(ii & 1))
+ s->s3->flags|=TLS1_FLAGS_TLS_PADDING_BUG;
+ if (s->s3->flags & TLS1_FLAGS_TLS_PADDING_BUG)
+ i--;
+ }
+ /* TLS 1.0 does not bound the number of padding bytes by the block size.
+ * All of them must have value 'padding_length'. */
+ if (i > (int)rec->length)
+ {
+ /* Incorrect padding. SSLerr() and ssl3_alert are done
+ * by caller: we don't want to reveal whether this is
+ * a decryption error or a MAC verification failure
+ * (see http://www.openssl.org/~bodo/tls-cbc.txt)
+ */
+ return -1;
+ }
+ for (j=(int)(l-i); j<(int)l; j++)
+ {
+ if (rec->data[j] != ii)
+ {
+ /* Incorrect padding */
+ return -1;
+ }
+ }
+ rec->length-=i;
+
+ rec->data += bs; /* skip the implicit IV */
+ rec->input += bs;
+ rec->length -= bs;
+ }
+ }
+ return(1);
+ }
+