+++ /dev/null
-/* crypto/rsa/rsa_pk1.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 <stdio.h>
-#include "cryptlib.h"
-#include <openssl/bn.h>
-#include <openssl/rsa.h>
-#include <openssl/rand.h>
-
-int RSA_padding_add_PKCS1_type_1(unsigned char *to, int tlen,
- const unsigned char *from, int flen)
- {
- int j;
- unsigned char *p;
-
- if (flen > (tlen-RSA_PKCS1_PADDING_SIZE))
- {
- RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_1,RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
- return(0);
- }
-
- p=(unsigned char *)to;
-
- *(p++)=0;
- *(p++)=1; /* Private Key BT (Block Type) */
-
- /* pad out with 0xff data */
- j=tlen-3-flen;
- memset(p,0xff,j);
- p+=j;
- *(p++)='\0';
- memcpy(p,from,(unsigned int)flen);
- return(1);
- }
-
-int RSA_padding_check_PKCS1_type_1(unsigned char *to, int tlen,
- const unsigned char *from, int flen, int num)
- {
- int i,j;
- const unsigned char *p;
-
- p=from;
- if ((num != (flen+1)) || (*(p++) != 01))
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1,RSA_R_BLOCK_TYPE_IS_NOT_01);
- return(-1);
- }
-
- /* scan over padding data */
- j=flen-1; /* one for type. */
- for (i=0; i<j; i++)
- {
- if (*p != 0xff) /* should decrypt to 0xff */
- {
- if (*p == 0)
- { p++; break; }
- else {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1,RSA_R_BAD_FIXED_HEADER_DECRYPT);
- return(-1);
- }
- }
- p++;
- }
-
- if (i == j)
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1,RSA_R_NULL_BEFORE_BLOCK_MISSING);
- return(-1);
- }
-
- if (i < 8)
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1,RSA_R_BAD_PAD_BYTE_COUNT);
- return(-1);
- }
- i++; /* Skip over the '\0' */
- j-=i;
- if (j > tlen)
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_1,RSA_R_DATA_TOO_LARGE);
- return(-1);
- }
- memcpy(to,p,(unsigned int)j);
-
- return(j);
- }
-
-int RSA_padding_add_PKCS1_type_2(unsigned char *to, int tlen,
- const unsigned char *from, int flen)
- {
- int i,j;
- unsigned char *p;
-
- if (flen > (tlen-11))
- {
- RSAerr(RSA_F_RSA_PADDING_ADD_PKCS1_TYPE_2,RSA_R_DATA_TOO_LARGE_FOR_KEY_SIZE);
- return(0);
- }
-
- p=(unsigned char *)to;
-
- *(p++)=0;
- *(p++)=2; /* Public Key BT (Block Type) */
-
- /* pad out with non-zero random data */
- j=tlen-3-flen;
-
- if (RAND_bytes(p,j) <= 0)
- return(0);
- for (i=0; i<j; i++)
- {
- if (*p == '\0')
- do {
- if (RAND_bytes(p,1) <= 0)
- return(0);
- } while (*p == '\0');
- p++;
- }
-
- *(p++)='\0';
-
- memcpy(p,from,(unsigned int)flen);
- return(1);
- }
-
-int RSA_padding_check_PKCS1_type_2(unsigned char *to, int tlen,
- const unsigned char *from, int flen, int num)
- {
- int i,j;
- const unsigned char *p;
-
- p=from;
- if ((num != (flen+1)) || (*(p++) != 02))
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2,RSA_R_BLOCK_TYPE_IS_NOT_02);
- return(-1);
- }
-#ifdef PKCS1_CHECK
- return(num-11);
-#endif
-
- /* scan over padding data */
- j=flen-1; /* one for type. */
- for (i=0; i<j; i++)
- if (*(p++) == 0) break;
-
- if (i == j)
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2,RSA_R_NULL_BEFORE_BLOCK_MISSING);
- return(-1);
- }
-
- if (i < 8)
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2,RSA_R_BAD_PAD_BYTE_COUNT);
- return(-1);
- }
- i++; /* Skip over the '\0' */
- j-=i;
- if (j > tlen)
- {
- RSAerr(RSA_F_RSA_PADDING_CHECK_PKCS1_TYPE_2,RSA_R_DATA_TOO_LARGE);
- return(-1);
- }
- memcpy(to,p,(unsigned int)j);
-
- return(j);
- }
-
projects / bcm963xx.git / blobdiff