svn merge ^/branches/released .

1 files changed, 289 insertions, 293 deletions

diff --git a/openssl/ssl/d1_enc.c b/openssl/ssl/d1_enc.c
index 8fa57347a..d762dc5c5 100644
--- a/openssl/ssl/d1_enc.c
+++ b/openssl/ssl/d1_enc.c
@@ -1,293 +1,289 @@
-/* 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"
-#ifndef OPENSSL_NO_COMP
-#include <openssl/comp.h>
-#endif
-#include <openssl/evp.h>
-#include <openssl/hmac.h>
-#include <openssl/md5.h>
-#include <openssl/rand.h>
-#ifdef KSSL_DEBUG
-#include <openssl/des.h>
-#endif
-
-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 (EVP_MD_CTX_md(s->write_hash))
-			{
-			n=EVP_MD_CTX_size(s->write_hash);
-			if (n < 0)
-				return -1;
-			}
-		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)) <= 0)
-					return -1;
-				}
-			}
-		}
-	else
-		{
-		if (EVP_MD_CTX_md(s->read_hash))
-			{
-			n=EVP_MD_CTX_size(s->read_hash);
-			if (n < 0)
-				return -1;
-			}
-		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);
-	}
-
+/* 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"

+#ifndef OPENSSL_NO_COMP

+#include <openssl/comp.h>

+#endif

+#include <openssl/evp.h>

+#include <openssl/hmac.h>

+#include <openssl/md5.h>

+#include <openssl/rand.h>

+#ifdef KSSL_DEBUG

+#include <openssl/des.h>

+#endif

+

+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 (EVP_MD_CTX_md(s->write_hash))

+			{

+			n=EVP_MD_CTX_size(s->write_hash);

+			if (n < 0)

+				return -1;

+			}

+		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)) <= 0)

+					return -1;

+				}

+			}

+		}

+	else

+		{

+		if (EVP_MD_CTX_md(s->read_hash))

+			{

+			n=EVP_MD_CTX_size(s->read_hash);

+			if (n < 0)

+				return -1;

+			}

+		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)

+				return -1;

+			}

+		

+		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);

+	}

+